Acaena exigua NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S.<a href="https://www.earth.com/news/ocean-surface-slicks-create-superhighway-for-fish/"> Fish</a> and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video. Acaena exigua is an extinct species of flowering plant in the rose family known by the common name liliwai. It was endemic to Hawaii, where it was known from Kauaʻi and west Maui. It had not been seen or collected since 1957 and was feared extinct until 1997, when one plant was discovered in a remote montane bog on <a href="https://www.bing.com/search?q=maui&amp;cvid=11f593b142284a109c4b71b63cd85874&amp;FORM=ANAB01&amp;PC=HCTS">Maui</a>. The plant died in 2000, and the species is now considered extinct.Acaena exigua A. Gray var. subtusstrigulosa Bitter: Classification. Click on a scientific name below to expand it in the PLANTS Classification Report. Rank Scientific Name and Common Name; Kingdom: Plantae – Plants Subkingdom: Tracheobionta

Acaena exigua

Acaena exigua NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation...

Asteraceae - Cirsium fontinale var. fontinale (fountain thistle) WS

Cirsium fontinale var. fontinale NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Cirsium fontinale var. fontinale ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

All the taxa within Cirsium fontinale have erect stems with leaves very strongly wavy margins. These tall plants may attain a height of 2.2 metres (7.2 ft), but may exist in the form of only 0.5 metres (1.6 ft). A given plant may have one or more stems, and the plants are sometimes short-lived, dying after flowering only once, even though the <a title="Species" href="https://en.wikipedia.org/wiki/Species">species</a> is acknowledged to be <a title="Perennial plant" href="https://en.wikipedia.org/wiki/Perennial_plant">perennial</a>. Lower leaves are typically petioled or tapered, but mostly spiny-lobed; <a title="Petiole (botany)" href="https://en.wikipedia.org/wiki/Petiole_(botany)">petioles</a> are either spiny-lobed or toothed.

Inflorescences are characterized by prickly heads more or less grouped in a panicle-like cluster, closely subtended by the higher leaves. Involucres are either hemispheric or bell-shaped, with purple to green coloration. Phyllaries range from a <a class="mw-redirect" title="Lanceolate" href="https://en.wikipedia.org/wiki/Lanceolate">lanceolate</a> to <a title="Glossary of botanical terms" href="https://en.wikipedia.org/wiki/Glossary_of_botanical_terms#ovate">ovate</a> shape. There are characteristically many flowers with white, pink or lavender <a class="mw-redirect" title="Corolla (flower)" href="https://en.wikipedia.org/wiki/Corolla_(flower)">corollae</a> about 20 millimeters in length.

Cirsium fontinale var. fontinale

Cirsium fontinale var. fontinale NatureServe Explorer Species Reports -- NatureServe...

Cirsium fontinale var. obispoense NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and<a href="https://www.earth.com/image/the-fall-rhapsody-in-ottawa/"> Canada.</a> NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Cirsium fontinale var. obispoense ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

All the taxa within Cirsium fontinale have erect stems with leaves very strongly wavy margins.<a href="https://en.wikipedia.org/wiki/Cirsium_fontinale#cite_note-2">[2]</a> These tall plants may attain a height of 2.2 metres (7.2 ft), but may exist in the form of only 0.5 metres (1.6 ft). A given plant may have one or more stems, and the plants are sometimes short-lived, dying after flowering only once, even though the <a title="Species" href="https://en.wikipedia.org/wiki/Species">species</a> is acknowledged to be <a title="Perennial plant" href="https://en.wikipedia.org/wiki/Perennial_plant">perennial</a>. Lower leaves are typically petioled or tapered, but mostly spiny-lobed; <a title="Petiole (botany)" href="https://en.wikipedia.org/wiki/Petiole_(botany)">petioles</a> are either spiny-lobed or toothed.

Inflorescences are characterized by prickly heads more or less grouped in a panicle-like cluster, closely subtended by the higher leaves. Involucres are either hemispheric or bell-shaped, with purple to green coloration. Phyllaries range from a <a class="mw-redirect" title="Lanceolate" href="https://en.wikipedia.org/wiki/Lanceolate">lanceolate</a> to <a title="Glossary of botanical terms" href="https://en.wikipedia.org/wiki/Glossary_of_botanical_terms#ovate">ovate</a> shape. There are characteristically many flowers with white, pink or lavender <a class="mw-redirect" title="Corolla (flower)" href="https://en.wikipedia.org/wiki/Corolla_(flower)">corollae</a> about 20 millimeters in length.

Cirsium fontinale var. obispoense

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Cirsium hydrophilum var. hydrophilum NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and <a href="https://www.earth.com/image/mistastin-lake-in-labrador-canada/">Canada</a>. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Cirsium hydrophilum var. hydrophilum ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of <a href="https://www.bing.com/search?q=north+america&amp;cvid=04199c903ec340abbe76ed5437dee267&amp;aqs=edge.0.69i59l2j69i57j69i59j69i60l3.622j0j1&amp;pglt=43&amp;FORM=ANNTA1&amp;PC=HCTS">North America</a> and the world. North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. It can also be described as the northern subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Tectonic Plate, Greenland is included as part of North America geographically. North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), about 16.5% of the Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the fourth by population after Asia, Africa, and Europe.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Cirsium hydrophilum var. hydrophilum

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Cirsium loncholepis NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Cirsium loncholepis is a rare species of <a title="Cirsium" href="https://en.wikipedia.org/wiki/Cirsium">thistle</a> known by the common name La Graciosa thistle. It is <a title="Endemism" href="https://en.wikipedia.org/wiki/Endemism">endemic</a> to <a title="California" href="https://en.wikipedia.org/wiki/California">California</a>, where it is known from about 15 remaining occurrences in <a title="Wetland" href="https://en.wikipedia.org/wiki/Wetland">wetlands</a> where southwestern <a title="San Luis Obispo County, California" href="https://en.wikipedia.org/wiki/San_Luis_Obispo_County,_California">San Luis Obispo County</a> borders northwestern <a title="Santa Barbara County, California" href="https://en.wikipedia.org/wiki/Santa_Barbara_County,_California">Santa Barbara County</a>. It grows in coastal scrub and <a title="Dune" href="https://en.wikipedia.org/wiki/Dune">sand dunes</a>, <a title="Marsh" href="https://en.wikipedia.org/wiki/Marsh">marshes</a>, and moist grasslands in the <a title="Drainage basin" href="https://en.wikipedia.org/wiki/Drainage_basin">watersheds</a> of local rivers, including the <a title="Santa Maria River (California)" href="https://en.wikipedia.org/wiki/Santa_Maria_River_(California)">Santa Maria River</a>. It is a federally listed <a title="Endangered species" href="https://en.wikipedia.org/wiki/Endangered_species">endangered species</a>.

This native thistle may exceed a meter in height and sometimes forms a mound with fleshy, ridged stem branches. The leaves are deeply cut into lobes, toothed and wavy along the edges, the lowest leaves approaching 30 centimeters in length. The <a title="Inflorescence" href="https://en.wikipedia.org/wiki/Inflorescence">inflorescence</a> is a tight cluster of <a class="mw-redirect" title="Head (botany)" href="https://en.wikipedia.org/wiki/Head_(botany)">flower heads</a>, each up to 3 or 4 centimeters long. The flower head is lined with spiny <a title="Bract" href="https://en.wikipedia.org/wiki/Bract">phyllaries</a> and filled with purple-tinted white flowers with purple anthers. The fruit is a compressed <a title="Achene" href="https://en.wikipedia.org/wiki/Achene">achene</a> a few millimeters long topped with a <a class="mw-redirect" title="Pappus (flower structure)" href="https://en.wikipedia.org/wiki/Pappus_(flower_structure)">pappus</a> which may be 2.5 centimeters in length.

Cirsium loncholepis

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Cirsium pitcheri NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Cirsium pitcheri ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.Pitcher's thistle is a plant of modest appearance through much of its lifespan; it concentrates most of its biomass in a massive <a title="Taproot" href="https://en.wikipedia.org/wiki/Taproot">taproot</a> that can be 6 feet (2 m) in length. Its long, narrow, gray-green leaves are protected by spines and dense, silvery hairs. Between 2 and 8 years after germination, the juvenile thistle abruptly matures and sends forth a flower stalk of 100 cm (40 inches) or more in height.

At the top of the blooming shoot is a spectacular effusive <a class="mw-redirect" title="Flower head" href="https://en.wikipedia.org/wiki/Flower_head">flower head</a>, ranging in color from creamy white to very light pink, and guarded by spines. Some individuals may be quite bushy, and produce numerous flowering heads. Usually at least 5 years are required for the thistle to reach maturity. Pitcher's thistle is <a title="Monocarpic" href="https://en.wikipedia.org/wiki/Monocarpic">monocarpic</a>; after flowering once, the plant dies. Most of its seeds do not disperse very far, in fact, entire heads are occasionally buried, producing clusters of seedlings

Cirsium pitcheri

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Cirsium vinaceum NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.Cirsium vinaceum is a rare species of <a title="Cirsium" href="https://en.wikipedia.org/wiki/Cirsium">thistle</a> known by the common name Sacramento Mountains thistle. It is <a title="Endemism" href="https://en.wikipedia.org/wiki/Endemism">endemic</a> to <a title="Otero County, New Mexico" href="https://en.wikipedia.org/wiki/Otero_County,_New_Mexico">Otero County</a>, <a title="New Mexico" href="https://en.wikipedia.org/wiki/New_Mexico">New Mexico</a>, in the United States, where it is known only from the <a title="Sacramento Mountains (New Mexico)" href="https://en.wikipedia.org/wiki/Sacramento_Mountains_(New_Mexico)">Sacramento Mountains</a>. The plant can be found in six <a title="Canyon" href="https://en.wikipedia.org/wiki/Canyon">canyon</a> systems in a southern section of this mountain range spanning about 32 kilometers. It is rare because it is limited to a specific type of mountain <a title="Wetland" href="https://en.wikipedia.org/wiki/Wetland">wetland</a> which is both naturally uncommon and threatened by a number of forces. The plant was federally listed as threatened in 1987

Cirsium vinaceum

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Cladonia perforata NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Cladonia perforata ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.Cladonia perforata is a rare species of <a title="Lichen" href="https://en.wikipedia.org/wiki/Lichen">lichen</a> known as Florida perforate cladonia and Florida perforate reindeer lichen. It is <a title="Endemism" href="https://en.wikipedia.org/wiki/Endemism">endemic</a> to the state of <a title="Florida" href="https://en.wikipedia.org/wiki/Florida">Florida</a> in the United States, where it is known from 16 populations in four widely separated areas of the state. It is native to a very specific type of <a title="Florida scrub" href="https://en.wikipedia.org/wiki/Florida_scrub">Florida scrub</a> habitat which is increasingly rare and patchy due to <a title="Habitat destruction" href="https://en.wikipedia.org/wiki/Habitat_destruction">habitat destruction</a>, degradation, and <a title="Habitat fragmentation" href="https://en.wikipedia.org/wiki/Habitat_fragmentation">fragmentation</a>. In 1993 this was the first species of lichen to be federally listed as an <a title="Endangered species" href="https://en.wikipedia.org/wiki/Endangered_species">endangered species</a> of the United States

Cladonia perforata

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Clarkia franciscana NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.Clarkia franciscana is a federally listed <a title="Endangered species" href="https://en.wikipedia.org/wiki/Endangered_species">endangered species</a>. The two San Francisco populations are on land which is protected from development but is affected by many other factors including <a title="Invasive species" href="https://en.wikipedia.org/wiki/Invasive_species">invasive plant species</a>, trampling, and <a title="Landscaping" href="https://en.wikipedia.org/wiki/Landscaping">landscaping</a> of vegetation. The three Oakland populations are probably the remnants of one population that was fragmented by development in the heavily altered urban habitat.<a href="https://en.wikipedia.org/wiki/Clarkia_franciscana#cite_note-cpc-1">[1]</a> The largest of the three occurrences is partially protected at <a class="mw-redirect" title="Redwood Regional Park" href="https://en.wikipedia.org/wiki/Redwood_Regional_Park">Redwood Regional Park</a>, but the other two are on privately owned property which is proposed to undergo some development. Construction of housing is proposed on the site, with less than an acre being left undeveloped as a compromise between developers and environmental advocates

Clarkia franciscana

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Clarkia imbricata NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Clarkia imbricata is a rare species of flowering plant in the <a title="Onagraceae" href="https://en.wikipedia.org/wiki/Onagraceae">evening primrose family</a> known by the common name Vine Hill clarkia. It is <a title="Endemism" href="https://en.wikipedia.org/wiki/Endemism">endemic</a> to <a title="Sonoma County, California" href="https://en.wikipedia.org/wiki/Sonoma_County,_California">Sonoma County, California</a>, where it is known from only one remaining natural occurrence near <a title="Vine Hill, California" href="https://en.wikipedia.org/wiki/Vine_Hill,_California">Vine Hill</a>. A second natural population located on private land was <a title="Local extinction" href="https://en.wikipedia.org/wiki/Local_extinction">extirpated</a> when the owners plowed up the <a title="Soil crust" href="https://en.wikipedia.org/wiki/Soil_crust">soil crust</a>. The <a title="California Native Plant Society" href="https://en.wikipedia.org/wiki/California_Native_Plant_Society">California Native Plant Society</a> has established a third population from <a title="Cutting (plant)" href="https://en.wikipedia.org/wiki/Cutting_(plant)">cuttings</a> and is tending it in a reserve. This is a federally listed <a title="Endangered species" href="https://en.wikipedia.org/wiki/Endangered_species">endangered species</a>.

Vine Hill clarkia is an annual herb growing erect to about half a meter in maximum height. The leaves are lance-shaped and about 2 centimeters long. The <a title="Inflorescence" href="https://en.wikipedia.org/wiki/Inflorescence">inflorescence</a> is a dense array of open flowers and erect closed flower buds. The four <a title="Sepal" href="https://en.wikipedia.org/wiki/Sepal">sepals</a> separate when the flower opens. The petals are fan-shaped with frilly edges, measuring 2 to 2.5 centimeters long. They are lavender with a wash of white near the base and a wedge of darker lavender above. There are 8 <a title="Stamen" href="https://en.wikipedia.org/wiki/Stamen">stamens</a> with anthers of equal size, and a protruding <a title="Gynoecium" href="https://en.wikipedia.org/wiki/Gynoecium">stigma</a>.

Clarkia imbricata

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Clarkia speciosa ssp. immaculata NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Clarkia speciosa ssp. immaculata ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.Clarkia speciosa is a species of flowering plant in the <a title="Onagraceae" href="https://en.wikipedia.org/wiki/Onagraceae">evening primrose family</a> known by the common name redspot clarkia. It is <a title="Endemism" href="https://en.wikipedia.org/wiki/Endemism">endemic</a> to <a title="California" href="https://en.wikipedia.org/wiki/California">California</a>, where it is known from the <a class="mw-redirect" title="California Central Coast" href="https://en.wikipedia.org/wiki/California_Central_Coast">Central Coast</a> and mountains and from the <a class="mw-redirect" title="Sierra Nevada (U.S.)" href="https://en.wikipedia.org/wiki/Sierra_Nevada_(U.S.)">Sierra Nevada foothills</a>. The plant is variable across its intergrading subspecies, taking a decumbent to erect form with a stem up to about half a meter long. The open or dense <a title="Inflorescence" href="https://en.wikipedia.org/wiki/Inflorescence">inflorescence</a> has opening flowers and several closed buds. As the bud opens the <a title="Sepal" href="https://en.wikipedia.org/wiki/Sepal">sepals</a> all separate from each other. The fan-shaped petals are up to 2.5 centimeters long and may be lavender to pink to deep red, sometimes fading to white or yellowish at the base. There is sometimes, but not always, a large bright red spot near the middle of the petal.

Clarkia speciosa ssp. immaculata

Clarkia speciosa ssp. immaculata NatureServe Explorer Species Reports -- NatureServe...

Clarkia springvillensis NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Clarkia springvillensis ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Clarkia springvillensis is an annual herb growing erect to approach a maximum height near 1 metre (3.3 ft). The lance-shaped leaves are up to 9 centimeters long. The herbage is hairless and waxy in texture.

The <a title="Inflorescence" href="https://en.wikipedia.org/wiki/Inflorescence">inflorescence</a> bears open flowers and hanging, closed flower buds. The deep red <a title="Sepal" href="https://en.wikipedia.org/wiki/Sepal">sepals</a> remain fused together as the petals bloom from one side. Each petal is a diamond-shaped blade at the end of a long claw. It is pinkish-lavender with a purple spot at the base. There are 8 <a title="Stamen" href="https://en.wikipedia.org/wiki/Stamen">stamens</a>, some with large, red anthers and some with smaller, paler anthers. The <a title="Gynoecium" href="https://en.wikipedia.org/wiki/Gynoecium">stigma</a> protrudes from the center.

Clarkia springvillensis

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Clematis morefieldii NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Clematis morefieldii produces woolly-haired <a title="Vine" href="https://en.wikipedia.org/wiki/Vine">vine</a> runners up to 5 metres (16 ft) long. The leaves are compound, each made up of several leaflets and one or more <a title="Tendril" href="https://en.wikipedia.org/wiki/Tendril">tendrils</a> for grabbing objects around the plant. The leaflets have velvety undersides.

The <a title="Inflorescence" href="https://en.wikipedia.org/wiki/Inflorescence">inflorescences</a> occur in the axils of the leaves. Each has up to five flowers which have green-tinged pink <a title="Sepal" href="https://en.wikipedia.org/wiki/Sepal">sepals</a> with curling tips arranged in an <a title="Urn" href="https://en.wikipedia.org/wiki/Urn">urn</a> shape. The flower is thick and hairy in texture. There are no petals. The flower is up to 2.5 centimeters in length.

The plant yields fruits which may reach 3.5 centimeters long including their plume-like tips.

Clematis morefieldii

Clematis morefieldii NatureServe Explorer Species Reports -- NatureServe Explorer is...

Clematis socialis NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common <a href="https://www.earth.com/video/plants-cannot-keep-up-with-rising-co2-levels/">plants</a> and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Clematis socialis ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video. This is a <a title="Rhizome" href="https://en.wikipedia.org/wiki/Rhizome">rhizomatous</a> perennial herb growing up to half a meter in erect height. It is not viny like many other Clematis. The plant generally forms colonies of stems that sprout up from its horizontal rhizome, so what appears to be a number of plants are actually one plant with several <a title="Cloning" href="https://en.wikipedia.org/wiki/Cloning">clones</a> attached to its root. The lower leaves are simple or lobed, and the upper leaves may be compound, divided into thin, lance-shaped leaflets. Leaves at the very base of the plant may be scale like. The <a title="Inflorescence" href="https://en.wikipedia.org/wiki/Inflorescence">inflorescence</a> is a solitary flower at the tip of the stem. Its four purple-blue <a title="Sepal" href="https://en.wikipedia.org/wiki/Sepal">sepals</a> are arranged in an <a title="Urn" href="https://en.wikipedia.org/wiki/Urn">urn</a> shape with spreading, pointed tips; there are no petals. The flower may reach 3 centimeters in length. The fruit is up to 2.5 centimeters long including its hairy, elongated beak

Clematis socialis

Clematis socialis NatureServe Explorer Species Reports -- NatureServe Explorer is...

Clermontia drepanomorpha NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Clermontia drepanomorpha is a rare species of flowering plant in the <a title="Campanulaceae" href="https://en.wikipedia.org/wiki/Campanulaceae">bellflower family</a> known by the common name Kohala Mountain clermontia. It is one of several <a title="Hawaiian lobelioids" href="https://en.wikipedia.org/wiki/Hawaiian_lobelioids">Hawaiian lobelioids</a> in genus Clermontia that are known as `oha wai. This plant is <a title="Endemism" href="https://en.wikipedia.org/wiki/Endemism">endemic</a> to <a title="Kohala (mountain)" href="https://en.wikipedia.org/wiki/Kohala_(mountain)">Kohala</a>, a <a title="Volcano" href="https://en.wikipedia.org/wiki/Volcano">volcano</a> at the northern end of the island of <a title="Hawaii (island)" href="https://en.wikipedia.org/wiki/Hawaii_(island)">Hawaii</a>. This is a federally listed <a title="Endangered species" href="https://en.wikipedia.org/wiki/Endangered_species">endangered species</a> of the United States.

There are fewer than 250 individuals remaining in the wet forests on the slopes of the volcano. Threats to the species include disturbance by <a title="Feral pig" href="https://en.wikipedia.org/wiki/Feral_pig">feral pigs</a>, deer, rats, and people, and <a title="Invasive species" href="https://en.wikipedia.org/wiki/Invasive_species">invasive plant species</a>.

Clermontia drepanomorpha

Clermontia drepanomorpha NatureServe Explorer Species Reports -- NatureServe Explorer is...

Clermontia lindseyana NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Clermontia lindseyana ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Clermontia lindseyana is a rare species of flowering plant in the bellflower family known by the common name hillside clermontia. It is one of several Hawaiian lobelioids in genus Clermontia that are known as `oha wai. This plant is known only from Haleakalā, a volcano on the island of <a title="Maui" href="https://en.wikipedia.org/wiki/Maui">Maui</a>, and <a title="Mauna Loa" href="https://en.wikipedia.org/wiki/Mauna_Loa">Mauna Loa</a> and <a title="Mauna Kea" href="https://en.wikipedia.org/wiki/Mauna_Kea">Mauna Kea</a>, volcanoes on the island of <a title="Hawaii (island)" href="https://en.wikipedia.org/wiki/Hawaii_(island)">Hawaii</a>. This is a federally listed endangered species of the United States.

There are ten known total occurrences of the plant and probably fewer than 1000 individuals remaining.<a href="https://en.wikipedia.org/wiki/Clermontia_lindseyana#cite_note-tnc-1">[1]</a> Threats to the species include disturbance by domesticated and feral <a title="Ungulate" href="https://en.wikipedia.org/wiki/Ungulate">ungulates</a> and <a title="Rat" href="https://en.wikipedia.org/wiki/Rat">rats</a>, <a title="Deforestation" href="https://en.wikipedia.org/wiki/Deforestation">deforestation</a>, and invasive plant species

Clermontia lindseyana

Clermontia lindseyana NatureServe Explorer Species Reports -- NatureServe Explorer is...

NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Clermontia oblongifolia ssp. brevipes

NatureServe Explorer Species Reports -- NatureServe Explorer is a source...

Clermontia oblongifolia ssp. mauiensis NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Clermontia oblongifolia ssp. mauiensis ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Clermontia oblongifolia is a species of flowering plant in the bellflower family known by the common name Oahu clermontia. It is one of several Hawaiian lobelioids in genus Clermontia that are known as ʻoha wai. This plant is native to three of the Hawaiian Islands, where one subspecies is not uncommon but the other two are very rare and endangered.

The more common subspecies, ssp. oblongifolia, is <a title="Endemism" href="https://en.wikipedia.org/wiki/Endemism">endemic</a> to <a title="Oahu" href="https://en.wikipedia.org/wiki/Oahu">Oʻahu</a>, where it grows in <a title="Hawaiian tropical rainforests" href="https://en.wikipedia.org/wiki/Hawaiian_tropical_rainforests">rainforests</a>.

The rare subspecies mauiensis is endemic to <a title="Maui" href="https://en.wikipedia.org/wiki/Maui">Maui</a>, where there is only a single plant remaining in the <a title="Hawaiian tropical rainforests" href="https://en.wikipedia.org/wiki/Hawaiian_tropical_rainforests#Wet_forests">montane wet forests</a>. It has been <a title="Local extinction" href="https://en.wikipedia.org/wiki/Local_extinction">extirpated</a> from <a title="Lanai" href="https://en.wikipedia.org/wiki/Lanai">Lānaʻi</a>. This subspecies is federally listed as an endangered species of the United States.

The rare subspecies brevipes is endemic to <a title="Molokai" href="https://en.wikipedia.org/wiki/Molokai">Molokaʻi</a>, where there are fewer than 30 plants remaining. This subspecies is federally listed as an endangered species of the United States

Clermontia oblongifolia ssp. mauiensis

Clermontia oblongifolia ssp. mauiensis NatureServe Explorer Species Reports -- NatureServe...

Clermontia peleana NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and <a href="https://www.earth.com/image/mistastin-lake-in-labrador-canada/">Canada.</a> NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- Clermontia peleana ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of <a href="https://www.bing.com/search?q=north+america&amp;cvid=a89f77701d234b96b3eaee1307656b94&amp;aqs=edge.0.69i59j69i57j0l4j69i60l3.1415j0j9&amp;FORM=ANAB01&amp;PC=HCTS">North America</a> and the world. North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. It can also be described as the northern subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Tectonic Plate, Greenland is included as part of North America geographically. North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), about 16.5% of the Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the fourth by population after Asia, Africa, and Europe.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Clermontia peleana

Clermontia peleana NatureServe Explorer Species Reports -- NatureServe Explorer is...

Warsaw isn’t short on parks or tree-lined boulevards, but a trio of Polish universities wondered whether smaller, resident-run gardens could add something crucial to the capital’s climate resilience.



To find out, researchers from <a href="https://english.swps.pl/">SWPS University</a>, <a href="https://eng.pw.edu.pl/">Warsaw University of Technology</a>, and the <a href="https://www.sggw.edu.pl/en/">Warsaw University of Life Sciences</a> mapped every vacant meadow, former orchard, and post-industrial lot within easy walking distance of apartment blocks.



They came up with a staggering 1,864 hectares (4,600 acres) - more than enough space, they say, for a citywide network of community gardens that soak up stormwater, cool overheated streets, and capture <a href="https://www.earth.com/news/planting-diverse-crops-traps-carbon-and-boosts-soil-health/">carbon</a>.



The investigation combined that spatial analysis with more than 250 in-depth interviews. The goal was to see who is already gardening, what motivates them, and how much social capital - trust, shared norms, cooperative spirit - might be harvested alongside tomatoes and herbs.



<h2 class="wp-block-heading" id="h-who-uses-the-urban-gardens">Who uses the urban gardens</h2>



It turns out the movement is surprisingly broad. Urban gardening brings together all social groups, the team reports, from school children planting <a href="https://www.earth.com/news/pollinators-are-disappearing-and-its-bad-news-for-plants/">pollinator</a> patches to cultural institutions converting courtyards into micro-farms.



Still, two cohorts dominate the regular volunteer lists: retirees - often women with higher education - and young middle class families. 



Most gardens revolve around a core group of 10 to 15 steady hands, supplemented by casual helpers and passers-by who stop to chat, water, or simply lounge among the raised beds.



<h2 class="wp-block-heading" id="h-motivation-of-urban-gardeners">Motivation of urban gardeners </h2>



Why do they show up week after week? According to study co-author Piotr Majewski of SWPS University, the motivations of urban gardeners vary. 



"The most important ones are: reconnection to nature, positive contribution to the environment, social relations, and mutual learning between gardeners," said Majewski.



Food, interestingly, is not the primary driver. Leaders said harvests help, but real value comes from biodiversity, composting, and public workshops on sustainable living.



<h2 class="wp-block-heading" id="h-tiny-plots-big-impact">Tiny plots, big impact</h2>



Those activities tally with an expanding body of international research linking <a href="https://www.earth.com/news/reducing-carbon-footprint-urban-farms-and-agriculture/">urban agriculture</a> to climate adaptation. 



Even pocket-size plots act as carbon sinks, trap particulate pollution, and soften the urban heat island. Raised beds can be engineered to hold back flash-flood water, while compost heaps divert organic waste from <a href="https://www.earth.com/news/landfills-emit-exorbitant-amount-methane-into-atmosphere/">landfills</a>.



For Warsaw, the numbers are compelling. Nearly all of the identified 1,864 hectares (4,600 acres) lie within a quarter mile of housing, meaning a potential garden is no farther than a ten-minute stroll for most residents - and often half that.



Such proximity, the experts argue, makes it easier to harness gardens as a distributed green-infrastructure network in a warming metropolis of nearly two million people.



Yet the real strength may be social. Garden groups knit neighbors together, boosting the informal networks that cities rely on during <a href="https://www.earth.com/news/climate-change-has-made-heatwaves-more-deadly/">heatwaves</a>, floods, or other climate-related shocks.



Many interviewees said they joined to cultivate community first, vegetables second. Regular workdays double as impromptu skill‐shares: retirees pass on horticultural know-how, children learn ecological stewardship, and newcomers forge local friendships.



<h2 class="wp-block-heading" id="h-urban-gardens-in-city-plans">Urban gardens in city plans</h2>



Majewski and his colleagues believe Warsaw’s planners should take that social-ecological synergy seriously.



“The system of community gardens should also be considered as a tool to support <a href="https://www.earth.com/news/the-power-of-imagination-in-climate-change-adaptation/">climate change adaptation</a> solutions in urban policies in spatial planning - provided that they are considered an important link in the urban green infrastructure system,” he explained.



To get there, the researchers lay out a handful of recommendations. First, city hall could weave gardens into official zoning strategies rather than treating them as informal afterthoughts. 



That might mean leasing public land at peppercorn rents, streamlining permits, or integrating gardens into new housing estates from the design phase.



Second, municipal agencies could supply starter kits - soil, timber, rain barrels - while leaving day-to-day management to residents. Third, wider publicity would help spread the idea beyond the usual eco-activist circles.



<h2 class="wp-block-heading" id="h-scaling-gardens-citywide">Scaling gardens citywide</h2>



The study also flags areas for further research. At what point does a collection of isolated plots start delivering measurable cooling or flood mitigation benefits? 



How can Warsaw ensure that garden networks thrive in all districts, not just affluent ones with vocal community groups? And what responsibilities will fall on municipal departments when gardens become part of critical infrastructure rather than hobby spaces?



Those unknowns aside, the evidence is clear: Warsaw already hosts a vibrant cohort of “hero activists” who coax life from overlooked corners.



With modest institutional backing, their trowels and compost bins could double as climate-adaptation tools - cooling concrete and absorbing rainfall. 



Perhaps most importantly, they help draw neighbors together in a city that will need every ounce of solidarity as temperatures rise.



The study is published in the journal <a href="https://sciendo.com/article/10.2478/mgrsd-2025-0005">Miscellanea Geographic</a>.



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Urban gardens help cities fight climate change

Warsaw isn’t short on parks or tree-lined boulevards, but a...

Virginia faces a stubborn enemy: the spotted lanternfly (SLF). These invasive insects damage trees, crops, and gardens by feeding on plant sap and leaving behind sticky honeydew. A research team led by Assistant Professor Scotty Yang at Virginia Tech has discovered an unexpected helper in the battle against this pest: ants.



Yang and his team found that ants, drawn to honeydew, can carry traces of lanternfly DNA in their bodies. By analyzing the ants, scientists can now detect whether the <a href="https://www.earth.com/news/fish-swim-in-schools-by-stacking-like-ladder-rungs/">pest</a> has reached an area, even without spotting the insect directly.



<h2 class="wp-block-heading" id="h-ants-collect-lanternfly-dna-through-waste">Ants collect lanternfly DNA through waste</h2>



The research is based on environmental DNA, or eDNA. This approach collects genetic material that organisms leave behind in their surroundings. 



Spotted lanternflies leave DNA in their sugary waste, which ants readily consume. Scientists then apply a lab technique called polymerase chain reaction, or PCR, to identify SLF DNA inside the ants.



“Ants are nature’s sugar seekers,” Yang said. “If there’s even a tiny drop of honeydew left behind by a spotted lanternfly, ants are likely to find it.”



Yang’s team named the method “antDNA.” Even a single meal of honeydew lets <a href="https://www.earth.com/news/swarm-intelligence-ants-can-anticipate-obstacles-and-plan-ahead/">ants</a> retain the lanternfly's DNA for up to five days. Because ants roam widely, this method can detect SLF activity from as far as 100 meters from the infestation.



<h2 class="wp-block-heading" id="h-field-tests-across-virginia">Field tests across Virginia</h2>



Researchers tested the method at three Virginia sites: Salem, Lynchburg Site 1, and Lynchburg Site 2. These locations represented low, medium, and high lanternfly densities. 



At each site, they placed honey-baited lure stations along transects, attracting ants with cotton balls soaked in honey.



The Salem site showed a 46.7 percent positive rate for SLF DNA. Lynchburg Site 1 and Site 2 showed 62.1 percent and 62.5 percent, respectively. Most stations attracted ants within 30 minutes, proving the method’s ease of use.



The study also tested ants from nine species. SLF DNA was found even in ants that had not directly fed on honeydew, likely due to food sharing within <a href="https://www.earth.com/news/selfish-dna-in-a-few-ants-can-change-the-behavior-of-the-entire-colony/">colonies</a>. This behavior, known as trophallaxis, helps spread the DNA signal among nestmates.



<h2 class="wp-block-heading" id="h-ants-outperform-other-lanternfly-detectors">Ants outperform other lanternfly detectors</h2>



The antDNA technique works across landscapes and does not depend on the pest being visible. Unlike other methods, it does not require water, filtration, or special storage. Ants can be preserved in ethanol without refrigeration, reducing the burden on field teams.



Ants are present in nearly every habitat, from forests to cities. The collection setup is simple and inexpensive. The ants’ ability to hold liquid in their crop allows the DNA to stay detectable longer than in typical surface samples. 



The study confirmed that DNA from honeydew lasts longer than DNA from insect tissue, making honeydew a more stable source.



<h2 class="wp-block-heading" id="h-importance-of-early-detection">Importance of early detection</h2>



Spotted lanternflies harm many plants, including grapevines, hardwoods, and hops. As they feed, they weaken plants and coat them in honeydew. This sticky substance promotes sooty mold, which further harms plant health. 



Early detection is critical because removing the pest becomes harder once it spreads. Current surveillance efforts rely on human sightings of the insect or its egg masses. These sightings often occur only when the population has already grown. 



The ant surveillance method allows early detection of lanternfly species even in low-density zones and inaccessible areas.



<h2 class="wp-block-heading" id="h-scaling-up-and-looking-forward">Scaling up and looking forward</h2>



Yang and his team are now working on a portable test kit for use in the field. This will allow real-time molecular testing without needing a full lab. Faster results mean quicker action against the pest.



“One of the biggest advantages of using ants is that they live almost everywhere, such as forests, farms, cities - you name it,” Yang said. “Their constant search for food makes them ideal frontline samplers for spotted lanternfly DNA.”



This approach offers a new way to watch for invasive species like lanternflies using ants, without depending on visual surveys. It opens up possibilities for surveillance that is fast, flexible, and low-cost.



<h2 class="wp-block-heading" id="h-ants-may-detect-other-pests-like-lanternflies">Ants may detect other pests like lanternflies</h2>



The method could be expanded to track other pests. Many <a href="https://www.earth.com/news/how-many-ants-live-on-earth-at-any-point-in-time-total-number-is-astounding/">insects</a> excrete honeydew, and ants can pick up their DNA too. This opens the door for broader pest detection strategies using the same principle.



Ants, in their natural role as sugar hunters, may become an essential part of protecting crops, forests, and native ecosystems. With antDNA, researchers are tapping into nature’s own behaviors to find smarter ways of monitoring invasive threats.



The study is published in the journal <a href="https://scijournals.onlinelibrary.wiley.com/doi/10.1002/ps.8814" target="_blank" rel="noreferrer noopener">NeoBiota</a>.



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How ants could help stop the tree-killing lanternfly

Virginia faces a stubborn enemy: the spotted lanternfly (SLF). These...

When you look at a forest, the variety of trees you see above ground is only part of the story. Beneath the soil, vast networks of fungi influence which trees thrive, which coexist, and how forests respond to the challenges of climate and geography.



A new study led by researchers from <a href="https://www.purdue.edu/">Purdue University</a> and <a href="https://english.pku.edu.cn/">Peking University</a> has revealed how these underground fungal allies shape tree diversity across the globe. Their influence varies depending on latitude, moisture, and environmental stress.



<h2 class="wp-block-heading" id="h-fungi-hidden-beneath-forests">Fungi hidden beneath forests</h2>



Jingjing Liang, an associate professor of quantitative forest ecology at Purdue, co-led the study with Zhiheng Wang from Peking University.



“What we can see above ground is governed to a large extent by what is happening belowground,” said Liang.



The experts analyzed data from over 442,000 forest plots worldwide and focused on two main groups of <a href="https://www.earth.com/news/plants-distribute-enormous-amounts-of-co2-to-mycorrhizal-fungi/">mycorrhizal fungi</a>: ectomycorrhizal and arbuscular mycorrhizal fungi. 



Both form partnerships with tree roots, trading nutrients for carbohydrates, but they do so in different ways that profoundly influence <a href="https://www.earth.com/news/forests-rich-tree-diversity-adapt-better-changing-climate/">forest diversity</a>.



“The loss in tree species diversity may damage the ecosystem services provided by forests," Wang said. "Understanding the mechanisms driving the maintenance of tree species forest diversity is fundamental for the conservation of tree species diversity.” 



<h2 class="wp-block-heading" id="h-solving-a-forest-diversity-puzzle">Solving a forest diversity puzzle</h2>



For years, scientists have debated how fungal partnerships impact tree species diversity, proposing three competing hypotheses. This comprehensive global study found that all three are valid, depending on environmental context.



“Our findings reconcile inconsistencies regarding how mycorrhizal symbiosis influences tree species diversity,” Wang said.



Using precise forest inventory data collected worldwide, the team applied advanced statistical methods to filter noise from complex ecological data, revealing hidden patterns.



“With this data, we were able to very accurately capture this relationship between different types of mycorrhizal fungi and forest tree species diversity,” Liang explained.



<h2 class="wp-block-heading" id="h-fungal-effects-shift-with-climate">Fungal effects shift with climate</h2>



<a href="https://umich.edu/">University of Michigan</a> ecologist Peter Reich, a senior co-author, highlighted the value of the study’s comprehensive approach. 



“This insight would have been impossible to detect without the comprehensiveness of this dataset, which allows us to test across large gradients of <a href="https://www.earth.com/news/climate-change-is-altering-the-temperature-in-66-of-tropical-forests/">temperature</a>, moisture, and latitude,” he said.



Reich explained that ectomycorrhizal fungi often dominate in cold, nutrient-poor regions that naturally have fewer tree species. Without a broad dataset, this dominance could obscure the fungi’s more nuanced effects.



“But by being able to tease apart temperature and moisture, we can see that when conditions are generally good," he said. "The more abundant the ectomycorrhizal are, the more they do to reduce tree richness.”



The process is complex. While dominant tree species naturally suppress less competitive species, root <a href="https://www.earth.com/news/plant-pandemic-looms-as-pathogens-move-from-wild-plants-to-crops/">pathogens</a> usually check the dominance, allowing diversity. 



Ectomycorrhizal fungi suppress these pathogens, enabling dominant trees to thrive unchecked, which can reduce species diversity.



<h2 class="wp-block-heading" id="h-harder-climates-stronger-alliances">Harder climates, stronger alliances</h2>



The study also found that under stressful conditions - such as low moisture or cold climates - the combination of both fungal types fosters greater diversity.



In these environments, resource-sharing partnerships help more tree species survive, while pathogen suppression plays a smaller role.



“Both ways of influencing tree diversity are real, but their relative balance and magnitude of impacts vary with environmental context,” Reich said.



<h2 class="wp-block-heading" id="h-healing-forests-from-below">Healing forests from below</h2>



Liang emphasized that understanding the hidden fungal networks in forests is akin to treating a patient holistically. 



“We should not just look at the surface symptoms. We should look deep down, literally to the roots of the problems, and that is belowground mutualism,” he said.



This work, supported by the <a href="https://www.gfbinitiative.org/">Global Forest Biodiversity Initiative</a> and its Science-i platform, demonstrates how global collaborations can untangle complex ecological questions.



<h2 class="wp-block-heading" id="h-forest-conservation-and-fungal-networks">Forest conservation and fungal networks</h2>



The findings open pathways for further research: How do these underground alliances affect <a href="https://www.earth.com/news/mixed-forests-with-many-tree-species-are-more-effective-at-carbon-storage/">carbon storage</a> in forests? Can fostering specific fungal partnerships enhance forest resilience in a changing climate?



&nbsp;“And what can we do to enhance the health of our forest ecosystem by not just seeing what is on the surface, but what is belowground?” Liang asked.



By revealing the profound influence of underground fungal networks on forest diversity, this research underscores that the key to healthier forests - and perhaps a healthier planet - may lie hidden beneath our feet.



The study is published in the journal <a href="https://www.science.org/doi/10.1126/sciadv.adt5743">Science Advances</a>.



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How an invisible fungal alliance helps forests thrive

When you look at a forest, the variety of trees...

The world’s appetite for avocados rests almost entirely on a single variety: the creamy Hass. That genetic sameness has streamlined production into a multibillion-dollar industry. 



But it also invites disaster, as uniform orchards can collapse quickly when faced with a new pest, pathogen, or heat wave.



To find a different path, experts from <a href="https://www.tamu.edu/">Texas A&amp;M University</a> have traveled far back in time - 11,000 years - to a Honduran rockshelter whose charred ancient avocado pits chronicle the birth of the crop and offer clues to a more resilient future.



<h2 class="wp-block-heading" id="h-avocado-fossils-in-a-cave">Avocado fossils in a cave</h2>



El Gigante, perched high in the western Honduran highlands, is a natural vault. Its dry interior has preserved plant remains that would normally rot in the humid tropics.



“It’s a truly incredible preservation of <a href="https://www.earth.com/news/fossil-reveals-how-plants-use-winged-seeds-to-expand-their-habitats/">plant fossils</a> and an abundance of avocado remains in a tropical region where plants generally do not preserve well,” said co-author Heather B. Thakar, an assistant professor in the Department of Anthropology at Texas A&amp;M.



Layer upon layer of seeds, rinds, and other botanical scraps lie undisturbed, creating a sequential record of human meals - and human influence on local plants - stretching back to the end of the last ice age.



<h2 class="wp-block-heading" id="h-avocados-outlived-their-giants">Avocados outlived their giants</h2>



According to the scientists, avocados first evolved to entice gigantic browsers such as gomphotheres and mammoths.



“Avocados are an amazing food source for humans, rich in healthy fats and nutrients that are essential to us,” Thakar said.



“But they originally evolved as a food source for ancient <a href="https://www.earth.com/news/tracing-the-disappearance-of-north-americas-megafauna/">megafauna</a> like giant sloths (gomphotheres) and mammoths that lived in the Americas during the last ice age.”



When those animals disappeared, humans stepped in to fill the ecological vacancy. Evidence at El Gigante shows early foragers selectively tending wild trees, nurturing seedlings with bigger seeds and fleshier fruit.



<h2 class="wp-block-heading" id="h-farming-over-thousands-of-years">Farming over thousands of years</h2>



The team radiocarbon-dated hundreds of pits and rinds to build an exceptionally fine-grained timeline. Measurements revealed a steady upsizing: seeds grew larger and rinds thicker as the centuries passed.



“Through traditional forest management practices, people were selecting bigger and thicker-skinned avocados,” Thakar noted.



By 7,500 years ago, fruit size and durability hint that growers could harvest and transport avocados across larger distances. Full domestication appears roughly 2,000 years ago. 



That makes avocado cultivation in Honduras older than <a href="https://www.earth.com/news/maize-plant-genetics-shape-root-health-and-growth/">maize</a>, beans, or squash - crops that would later dominate Mesoamerican farming.



<h2 class="wp-block-heading" id="h-past-lessons-for-future-crops">Past lessons for future crops</h2>



“Our work with El Gigante's avocado remains offers valuable information about resilience and adaptation in the face of climate change,” Thakar said.



Unlike modern orchardists who propagate identical Hass cuttings through grafting, ancient farmers planted seeds, preserving genetic variety.



“Much of the <a href="https://www.earth.com/news/can-trees-protect-their-genetic-diversity-for-millions-of-years/">genetic diversity</a> of ancient avocados still exists in wild populations in Mexico and Central America,” Thakar added.



“By developing new avocado varieties through seed selection from both modern domesticated plants and wild populations, we may have a better chance of adapting to these changing conditions than relying on cloning alone.”



Broadening commercial stock with traits such as drought tolerance or disease resistance could buffer future harvests against environmental shocks.



<h2 class="wp-block-heading" id="h-ancient-avocado-cave-earns-global-notice">Ancient avocado cave earns global notice</h2>



Scientists and local communities alike recognize El Gigante not just for its cultural importance, but for its scientific value as well. 



Honduras has proposed the shelter for <a href="https://www.wmf.org/videos/content-world-monuments-fund-and-unesco-world-heritage-sites?gad_source=1&amp;gad_campaignid=22461168217&amp;gbraid=0AAAAAD4zJBFj8U_yyOJyxKFquaCnnbg_W&amp;gclid=Cj0KCQjw64jDBhDXARIsABkk8J4mTznkcgn5ncX37Yk-yEugipmynhK175QfaNBsiUamSXP-bxWKUXQaAi-cEALw_wcB">UNESCO World Heritage</a> status, and Thakar’s team supplies documentation to bolster the case.



“All of the research that we have undertaken is used in support of El Gigante's recent nomination as a UNESCO World Heritage site,” she said.



Although the site’s awkward three-meter climb has deterred looters, occasional campers and hunters do stray inside - making formal protection urgent.



<h2 class="wp-block-heading" id="h-a-cave-full-of-agriculture">A cave full of agriculture</h2>



El Gigante also stores early evidence for squash and maize domestication. Thakar is actively working on a publication that details the arrival of maize and the 4,500 years of diversification and improvement of this globally important crop.



Thakar's methods - radiocarbon dating, stable-isotope chemistry, and 3-D morphometrics - merge hard science with cultural anthropology. 



She applies this toolkit across Mexico, Belize, and Nicaragua to map humanity’s long partnership with plants.



<h2 class="wp-block-heading" id="h-ancient-farming-modern-lessons">Ancient farming, modern lessons</h2>



“The vast majority of food consumed today is a product of domestication,” Thakar said.



Understanding that protracted process can guide modern breeders. Ancient cultivators operated without greenhouses or <a href="https://www.earth.com/news/gene-modification-can-create-better-tomatoes-eggplants-but-should-we-do-it/">genetic engineering</a>, yet they produced crops - like avocadoes - exquisitely tuned to local soils and climates.



Unearthing those forgotten lineages may reveal alleles lost in today’s streamlined varieties. 



“By studying domestication, we can recover ancient varieties and cultural knowledge that has helped humans become the incredibly successful species that we are," said Thakar.



"It's information that can be used to improve our crops today and ensure our continued survival into the future."



From a Honduran cliffside to global orchards, the avocado’s story shows that agricultural resilience springs from diversity - and that sometimes the best way forward is to look back.



The study is published in the journal <a href="https://www.pnas.org/doi/10.1073/pnas.2417072122">Proceedings of the National Academy of Sciences</a>.



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Cave discovery of ancient avocados could rescue a global crop

The world’s appetite for avocados rests almost entirely on a...

The move from hunting and gathering to farming changed human life forever. It shaped how we live, eat, work, and organize our communities. 



But how exactly this shift happened across regions like Anatolia and the Aegean has long been debated. Did early farmers move in and bring agriculture with them? Or did local hunter-gatherers adopt new ways on their own?



A recent study sheds light on this complex transition. Scientists from Middle East Technical University (METU) and Hacettepe University in Turkey, working with the <a href="https://www.unil.ch/unil/en/home.html">University of Lausanne</a> (UNIL) in Switzerland, used both archaeology and genetics to piece together the story. 



The research shows that the <a href="https://www.earth.com/news/early-neolithic-mountain-settlers-used-complex-farming-methods/">Neolithic</a> shift wasn’t a one-size-fits-all process. In some places, people moved in with new ideas. In others, the ideas moved faster than the people.



<h2 class="wp-block-heading" id="h-farming-spread-without-people-moving">Farming spread without people moving</h2>



By analyzing DNA and artifacts together, the team uncovered a more nuanced picture of how early farming spread. 



“In some regions of West Anatolia, we see the first transitions to village life nearly 10,000 years ago. However, we also observe thousands of years of genetic continuity, which means that populations did not migrate or mix massively, even though <a href="https://www.earth.com/news/preserving-your-cultural-traditions-drastically-improves-mental-health/">cultural transition</a> was definitely happening,” explained Dilek Koptekin, the study’s first author.



This means that, in parts of Anatolia, people were changing how they lived without being replaced by outsiders. The local communities stayed genetically stable for thousands of years - even as their tools, homes, and rituals evolved.



<h2 class="wp-block-heading" id="h-cultural-exchange-of-farming-ideas">Cultural exchange of farming ideas</h2>



We already knew that by around 6,000 BCE, farmers from <a href="https://www.earth.com/news/study-sheds-new-light-on-the-origins-of-the-first-farmers/">Anatolia</a> were moving into Europe, replacing hunting and gathering with agriculture. But what happened before that moment wasn’t clear. 



“Our study allows us to go back in time - to events that were mainly a matter of speculation up to now,” said Koptekin.



One of the key breakthroughs came from sequencing the genome of a 9,000-year-old individual from West Anatolia - the oldest such genome recovered from the region. 



Alongside this, the researchers looked at 29 new paleogenomes and combined that with existing data. The results pointed to something unexpected: very little change in the population’s genetic makeup for over 7,000 years.



“Genetically speaking, these people were mainly locals, meaning that their <a href="https://www.earth.com/news/fossil-discovery-anadoluvius-turkae-suggests-humans-originated-in-europe-not-africa/">ancestors</a> had not recently arrived from elsewhere. Yet their material culture evolved rapidly: they moved from caves to houses, and adopted new tools and rituals from afar," said Anna-Sapfo Malaspinas from UNIL.



"This suggests that these communities adopted Neolithic practices by cultural exchange rather than population replacement.” 



<h2 class="wp-block-heading" id="h-culture-on-the-move">Culture on the move</h2>



So how did new ideas reach these communities without large migrations? The answer might be in what the researchers call "background mobility." 



“This means a low but steady movement of individuals around different regions, perhaps linked to exchange, finding partners, or other motivations. These encounters then led to the sharing of material and ideas.” explained Mehmet Somel from METU.



Evidence of this kind of subtle movement shows up in trade goods like obsidian - volcanic glass used to make tools - found in West Anatolia but sourced from volcanoes in Central Anatolia, hundreds of kilometers away. 



It’s a clear sign that people were connected, even if they weren’t relocating in large numbers.



<h2 class="wp-block-heading" id="h-matching-genes-and-artifacts">Matching genes and artifacts</h2>



To get a deeper understanding of how movement and exchange worked, the team used a new approach. They matched ancient DNA data with archaeological findings by reviewing hundreds of studies and quantifying things like pottery styles, tools, and architectural remains. 



“By giving quantitative values to the archaeological data, we were able to directly compare large amounts of data across different sites for the first time,” said Çiğdem Atakuman from METU.



This allowed the researchers to see where people might have moved, and where ideas and practices like farming spread independently of population shifts.



The findings also support a long-standing saying among archaeologists: “Pots don’t equal people.” 



Just because a new style of <a href="https://www.earth.com/news/baltic-pottery-reveals-ancient-culinary-traditions/">pottery</a> appears in the archaeological record doesn’t mean a new group of people moved in. “Our study confirms this notion,” said Koptekin.



<h2 class="wp-block-heading" id="h-the-neolithic-was-a-mix-of-changes">The Neolithic was a mix of changes</h2>



Migration wasn’t completely off the table. In some parts of Anatolia, genetic data shows that around 7,000 BCE, new groups did arrive and mix with local populations. In the Aegean, too, another wave of movement brought new cultural elements that would later spread into Europe.



“These types of <a href="https://www.earth.com/news/timeline-early-humans-great-migration-reached-america-challenged-again/">migration</a> events, which leave genetically visible shifts, probably comprised a small fraction of movement happening compared to background mobility,” said Füsun Özer from Hacettepe University. 



“The Neolithic, in this view, was not a single process, but a patchwork of transformations, combining cultural adoption, mobility, and at times, migration.”



Koptekin noted that humans have always been adaptive and inclined to change their way of living. "We don’t need crises or big migration events to bring about change."



<h2 class="wp-block-heading" id="h-a-more-balanced-way-to-do-science">A more balanced way to do science</h2>



The study was primarily led by researchers based in Turkey, a point the team sees as crucial. For Malaspinas, this kind of collaboration helps science grow in a more balanced way. 



“Our collaboration shows how we, as a scientific community, should move forward to create a more inclusive and globally balanced research landscape,” she said.



By linking large-scale archaeological and genetic data, the researchers were able to move past overly simple models of how farming spread. The story is richer, more complex, and more human.



And that’s the real takeaway: change didn’t always come from conquest or collapse. Sometimes, people just tried something new - and stuck with it.



The full study was published in the journal <a href="https://www.science.org/doi/10.1126/science.adr3326">Science</a>.



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Ideas traveled farther than people in the early days of farming

The move from hunting and gathering to farming changed human...

Flour,Chickpeas,In,Spoonful,,Chick-peas,In,A,Sack,And,Fresh

For decades, studies on mice, monkeys, and even roundworms have pointed to calorie restriction as a ticket to longevity. Trouble is, perpetual hunger does not rank high on most bucket lists, and adherence to such strict diets tends to plummet once real life barges in with birthdays and barbecues.



By the time researchers at the <a href="https://www.wisc.edu/" target="_blank" rel="noreferrer noopener">University of Wisconsin</a> put calorie-cutting under the microscope, they noticed a pattern: eating less helped animals live longer, but the menu’s makeup mattered just as much. 



That discovery widened the spotlight to proteins, the nutrients stitched together from 20 common <a href="https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/amino-acids" target="_blank" rel="noreferrer noopener">amino acids</a>. Nine of those are “essential,” meaning the body cannot manufacture them.



Early work hinted that dialing down total protein might mirror the benefits of calorie restriction without the gnawing hunger. 



Mice fed modest protein saw improved <a href="https://www.earth.com/news/drinking-this-amount-of-water-per-day-helps-control-blood-sugar-levels-in-people-with-diabetes/">blood sugar</a> control and trimmer waistlines, yet blanket reductions risked muscle loss, especially in older animals. Something more surgical was needed.



<h2 class="wp-block-heading" id="h-protein-quality-over-quantity">Protein quality over quantity</h2>



Metabolism researcher <a href="https://www.medicine.wisc.edu/directory/lamming_dudley" target="_blank" rel="noreferrer noopener">Dudley Lamming</a> stepped into that gap with a question few had asked: what if the magic hides in specific amino acids rather than protein as a whole? 



“We like to say a calorie is not just a calorie,” he says. “Different components of your diet have value and impact beyond their function as a calorie, and we’ve been digging in on one component that many people may be eating too much of.”



His team homed in on the branched-chain amino acids - <a href="https://www.earth.com/news/eating-too-much-protein-greatly-increases-heart-disease-risk/">leucine</a>, isoleucine, and <a href="https://www.earth.com/news/plants-use-dna-duplication-to-increase-their-resilience/">valine</a> - popular in sports supplements for their muscle-building buzz. Instead of treating them as a block, the researchers isolated each one. Isoleucine quickly took center stage.



<h2 class="wp-block-heading" id="h-cutting-back-on-isoleucine">Cutting back on isoleucine</h2>



When mice at the equivalent of 30 human years were fed chow that cut isoleucine by about two-thirds, their bodies shed fat quickly. 



“Very quickly, we saw the mice on the reduced-isoleucine diet lose adiposity - their bodies got leaner, they lost fat,” says Lamming. 



<a href="https://www.earth.com/news/spicy-foods-can-slow-down-eating-and-cut-calorie-intake/">Calorie intake</a> actually climbed; the animals nibbled more in an apparent effort to find the missing amino acid, yet their metabolisms revved high enough to keep weight off.



Over time, male mice lived about 33 percent longer, and females about 7 percent. 



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/isoleucine_amino-acid_diet-restriction_lifespan-increase_credit-Cell-Metabolism_1m.jpg"><img src="https://www.earth.com/wp-content/uploads/2025/06/isoleucine_amino-acid_diet-restriction_lifespan-increase_credit-Cell-Metabolism_1s.webp" alt="This graphic illustration shows the impact that reduced isoleucine diet had on mice longevity. Credit: Cell Metabolism" class="wp-image-1975852"/></a><figcaption class="wp-element-caption">This graphic illustration shows the impact that reduced isoleucine diet had on mice longevity. Click image to enlarge. Credit: Cell Metabolism</figcaption></figure>



That extra runway arrived with smoother blood sugar curves, sturdier muscles, and fewer signs of frailty across 26 health checks - from grip strength to coat condition. 



Cancer, the usual culprit in an aging mouse colony, struck less often in males on the low-isoleucine diet, and prostate enlargement eased.



<h2 class="wp-block-heading" id="h-how-isoleucine-shapes-lifespan">How isoleucine shapes lifespan</h2>



Most roads in the aging field eventually intersect with <a href="https://www.nature.com/articles/s41392-023-01608-z" target="_blank" rel="noreferrer noopener">mTOR</a>, a cellular sensor finely tuned to amino acid levels. 



Drop isoleucine, and mTOR quiets down, dialing back growth signals that drive both tumor formation and the wear-and-tear of aging. 



The diet also boosts a hormone that helps the body cope with cold and is being studied as a potential diabetes therapy. 



The interplay of these pathways - not yet fully mapped - likely explains why trimming one nutrient outperforms broader protein cuts in middle-aged mice.



“Previous research has shown lifespan increase with low-calorie and low-protein or low-amino-acid diets starting in very young mice,” Lamming explains.



“We started with mice that were already getting older. It’s interesting and encouraging to think a dietary change could still make such a big difference in lifespan and what we call ‘healthspan,’ even when it started closer to mid-life.”



<h2 class="wp-block-heading" id="h-isoleucine-and-human-health">Isoleucine and human health</h2>



Humans need isoleucine for everything from <a href="https://www.earth.com/news/tibetan-women-have-quickly-evolved-to-thrive-in-low-oxygen-and-high-altitudes/">hemoglobin production</a> to immune defense, so eliminating it is off the table. 



The wrinkle is that many Western diets supply far more than the daily requirement, thanks to eggs, cheese, soy isolates, chicken, and beef featuring heavily on menus. 



Surveys from Wisconsin echo national data: people with higher body-mass indexes often report higher isoleucine intake.



“We can’t just switch everyone to a low-isoleucine diet,” Lamming continued. “But narrowing these benefits down to a single amino acid gets us closer to understanding the biological processes and maybe potential interventions for humans, like an isoleucine-blocking drug.”



The team’s nutritional modeling suggests that choosing more fruits, vegetables, and modest portions of animal protein can shave isoleucine totals without complicated meal plans.



<h2 class="wp-block-heading" id="h-human-trials-come-next">Human trials come next</h2>



Because the study relied on a genetically diverse strain of mice - much closer to human variety than lab inbreds - confidence is higher that the findings translate. 



Yet controlled human trials are still required. Researchers are now exploring whether temporary isoleucine dips, similar to the popular five-day <a href="https://www.earth.com/news/alternate-day-fasting-might-be-worth-trying-for-weight-loss/">fasting-mimicking diet</a>, can trigger the same metabolic perks without long-term restriction.



“It could be that by choosing healthier foods and healthier eating in general, we might be able to lower isoleucine enough to make a difference,” Lamming surmised.



While clinicians wait for definitive guidance, nutritionists already recommend leaning on <a href="https://www.earth.com/news/mixed-cover-crops-may-be-the-future-of-sustainable-farming/">legumes, whole grains, and vegetables</a>, which naturally carry less isoleucine than dairy or red meat. That shift dovetails with broader public-health advice to curb chronic disease risk.



<h2 class="wp-block-heading" id="h-eat-right-feel-good-live-longer">Eat right, feel good, live longer</h2>



To sum it all up, living longer has always hinged on a balance between what bodies need and what wears them out. 



The latest evidence suggests that tipping the scales away from a single amino acid might buy extra years without sacrificing satisfaction at the table. 



Turning lab findings into dinner-plate habits won’t happen overnight, but the path is far clearer now than when the conversation started with simply “eat less.”



These full studies were published in the journals <a href="https://www.cell.com/cell-metabolism/fulltext/S1550-4131(23)00374-1" target="_blank" rel="noreferrer noopener">Cell Metabolism</a> and <a href="https://www.nature.com/articles/s43587-024-00744-7" target="_blank" rel="noreferrer noopener">Nature Aging</a>.



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Removing this one thing from your diet could dramatically increase lifespan

For decades, studies on mice, monkeys, and even roundworms have...

The skin is our first protective barrier. With time, the outer layer, the epidermis, thins out. It loses its ability to block external harm. Keratinocytes form most of this layer, moving upward to create the skin’s shield. 



Vitamin C (VC), widely known for its antioxidant power, has also been studied many times in the past for its ability to repair skin. New research adds a deeper genetic angle to its importance.



A Japanese study, published in the&nbsp;Journal of Investigative Dermatology, shows how vitamin C thickens the skin by reactivating specific genes. It strengthens the <a href="https://www.earth.com/news/our-skins-bacteria-could-be-a-natural-sunscreen/">skin</a> by encouraging cell renewal through epigenetic changes.



“VC seems to influence the structure and function of epidermis, especially by controlling the growth of epidermal cells," explains Dr. Akihito Ishigami, Vice President at Tokyo Metropolitan Institute for Geriatrics and Gerontology (<a href="https://www.tmghig.jp/research/en/" target="_blank" rel="noreferrer noopener">TMGHIG</a>), who led the research.



"In this study, we investigated whether it promotes cell proliferation and differentiation via epigenetic changes."



<h2 class="wp-block-heading" id="h-understanding-vitamin-c-the-basics">Understanding vitamin C - the basics</h2>



Also known as ascorbic acid, vitamin C plays a critical role in human biology as a powerful antioxidant and essential cofactor in various enzymatic reactions. 



The body uses it to <a href="https://www.earth.com/news/scientists-discover-a-protein-that-reverses-cellular-aging/">synthesize collagen</a>, a key structural protein found in skin, blood vessels, and connective tissues. 



It also assists in the production of neurotransmitters such as norepinephrine and aids in metabolizing certain amino acids. 



Unlike most animals, humans cannot synthesize vitamin C internally and must obtain it through diet - primarily from fruits and vegetables like oranges, kiwis, strawberries, bell peppers, and <a href="https://www.earth.com/news/broccoli-sprouts-have-more-nutritional-value-than-mature-broccoli/">broccoli</a>.



Beyond its structural and metabolic roles, vitamin C strengthens the immune system by supporting the function of white blood cells and enhancing skin’s barrier defenses. 



Its antioxidant properties help neutralize free radicals, potentially lowering the risk of chronic diseases like cardiovascular disease and cancer.



<h2 class="wp-block-heading" id="h-how-vitamin-c-thickens-skin">How vitamin C thickens skin</h2>



Researchers wanted to see how vitamin C affects <a href="https://www.earth.com/news/new-electronic-skin-gives-robots-the-human-touch/">skin</a> growth. But instead of testing on real human skin, they created lab-grown skin called&nbsp;human epidermal equivalents. These are 3D skin models that behave like real skin. 



In these models, the&nbsp;top layer is exposed to air, like <a href="https://www.earth.com/news/hormones-may-slow-skin-aging-and-reduce-wrinkles/">human skin</a> facing the environment, while the&nbsp;bottom layer gets nutrients, just like how blood vessels nourish real skin from underneath.



They applied&nbsp;vitamin C in two doses: 0.1 and 1.0 millimolar. After 7 days, they noticed that the&nbsp;living part of the skin became thicker, meaning more skin cells had grown. 



The outermost dead <a href="https://www.earth.com/news/future-tech-will-track-emotions-through-changes-in-our-skin/">skin</a> layer didn’t change at this point. But by&nbsp;day 14, the&nbsp;living layer had thickened even more, and the&nbsp;outer dead layer had become thinner.



This suggested that vitamin C was&nbsp;making the skin produce more keratinocytes, which are the main cells that build the protective barrier.



<h2 class="wp-block-heading" id="h-vitamin-c-speeds-up-cell-division">Vitamin C speeds up cell division</h2>



Samples treated with vitamin C had more Ki-67-positive cells, markers of active division and showed faster skin regeneration. The study then looked into how vitamin C enabled this increase.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/06/vitamin-c_skin-regeneration_epigenetic_1m.jpg"><img src="https://www.earth.com/wp-content/uploads/2025/06/vitamin-c_skin-regeneration_epigenetic_1s.webp" alt="Vitamin C promotes epidermal regeneration by activating enzymes that help in activating genes and driving DNA demethylation—a process that reactivates genes involved in cell proliferation, ultimately enhancing keratinocyte growth and leading to thicker, healthier skin. Credit: TMIG" class="wp-image-1975765"/></a><figcaption class="wp-element-caption">Vitamin C promotes epidermal regeneration by activating enzymes that help in activating genes and driving DNA demethylation - a process that reactivates genes involved in cell proliferation, ultimately enhancing keratinocyte growth and leading to thicker, healthier skin. Click image to enlarge. Credit: TMIG</figcaption></figure>



They discovered that vitamin C reactivates key genes by removing methyl groups from DNA. These methyl groups silence genes. Their removal allows the genes to turn on, promoting <a href="https://www.earth.com/news/teen-skin-bacteria-could-hold-the-secret-to-acne-prevention/">skin</a> cell growth and repair.



<h2 class="wp-block-heading" id="h-unlocking-silenced-genes">Unlocking silenced genes</h2>



TET enzymes carry out DNA demethylation. They transform 5-methylcytosine into 5-hydroxymethylcytosine. 



This step requires iron in its Fe2+ form. When iron becomes Fe3+, the process stops. Vitamin C donates electrons to turn Fe3+ back into Fe2+, keeping the process active.



The study identified more than 10,000 areas of DNA that became hypomethylated with vitamin C. Expression of 12 key genes rose between 1.6 to 75.2 times. 



When TET enzymes were blocked, the effects reversed. This confirmed the role of TET-mediated demethylation in skin thickening.



<h2 class="wp-block-heading" id="h-changing-dna-structure-and-activity">Changing DNA structure and activity</h2>



The paper supports these results with additional experiments. It describes how vitamin C promotes transcriptional activation by increasing chromatin accessibility. 



Vitamin C-treated skin showed elevated <a href="https://www.genome.gov/genetics-glossary/Chromatin" target="_blank" rel="noreferrer noopener">chromatin</a> openness around growth-promoting genes.



The study shows enrichment of open chromatin regions near gene bodies related to cell proliferation. These genes are essential in epidermal development.



It further proves vitamin C’s action by displaying upregulation of genes such as&nbsp;DLX5,&nbsp;CXCL14, and&nbsp;EFNA1. These genes promote <a href="https://www.sciencedirect.com/topics/neuroscience/keratinocyte" target="_blank" rel="noreferrer noopener">keratinocyte</a> growth and skin structure organization.



Moreover, the paper presents long-read sequencing data. This technique confirmed that vitamin C increases the expression of full-length, functional gene transcripts. 



This strengthens the idea that vitamin C not only activates genes but does so in a way that results in usable proteins.



<h2 class="wp-block-heading" id="h-vitamin-c-and-skin-health">Vitamin C and skin health</h2>



To sum it all up, these findings suggest vitamin C can strengthen thin or aging skin. It works by restarting growth pathways that decline with age. It reactivates genes and supports cellular rebuilding at a molecular level.



Scientists added vitamin C directly to the skin cells, similar to how a cream or serum would deliver nutrients through the surface of the skin. When vitamin C was present, the skin cells grew more actively, leading to thicker, healthier skin layers.



“We found that VC helps thicken the skin by encouraging keratinocyte proliferation through DNA demethylation, making it a promising treatment for thinning skin, especially in older adults,” concludes Dr. Ishigami.



These changes boosted the activity of genes related to cell growth without interfering with normal skin development.



Although the researchers mentioned that vitamin C levels in the body can increase with supplements, they didn't actually study vitamin C taken by mouth. 



Instead, all the benefits observed - like stronger cell growth and healthier skin structure - came from applying vitamin C directly to the skin model in the lab. 



So, while eating fruits rich in vitamin C is still important for overall health, this study highlights how using it on the skin could help fight signs of aging and keep the skin functioning well.



Thanks to this new study and all of the research that preceded it, vitamin C may soon play a bigger role in daily skincare routines, not just as an antioxidant, but as a genetic rejuvenator.



-----



The study is published in the <a href="https://www.jidonline.org/article/S0022-202X(25)00416-6/fulltext" target="_blank" rel="noreferrer noopener">Journal of Investigative Dermatology</a>. 



Dr. Ishigami worked with <a href="https://iec.hokuriku-u.ac.jp/en/" target="_blank" rel="noreferrer noopener">Hokuriku University</a> and <a href="https://www.rohto.co.jp/global/" target="_blank" rel="noreferrer noopener">ROHTO Pharmaceutical Co., Ltd</a>. Key contributors included Professors Ayami Sato, Yasunori Sato, and Toshiyuki Kimura.



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Scientists prove this common vitamin acts at the cellular level to reverse signs of facial skin aging

The skin is our first protective barrier. With time, the...

As the world grapples with climate change and resource depletion, our dinner plates are slowly evolving. A quiet revolution in meat alternatives is taking place in food science labs, kitchens, and even grocery stores. The quest for sustainable, plant-based <a href="https://www.earth.com/news/meat-consumption-drove-an-evolutionary-leap-in-early-humans/">proteins</a> has never felt more urgent. 



While soy and pea proteins dominate shelves, scientists are exploring new, lesser-known crops. One such candidate for plant-based meat, sunflower seeds, is now under the spotlight thanks to a recent breakthrough from Brazil and Germany.



In a collaborative project between the Institute of Food Technology (<a href="https://www.abc.gov.br/training/informacoes/InstituicaoITAL_en.aspx" target="_blank" rel="noreferrer noopener">ITAL</a>), the University of Campinas (<a href="https://unicamp.br" target="_blank" rel="noreferrer noopener">UNICAMP</a>), and the Fraunhofer IVV Institute in Germany, researchers have created a new plant-based food. 



The researchers are transforming sunflower flour into a promising meat substitute. This development not only expands choices for vegetarians and vegans but also offers an environmentally sound option for meat lovers.



<h2 class="wp-block-heading" id="h-how-sunflower-turns-into-meat">How sunflower turns into meat</h2>



Sunflower flour is made by first extracting oil from the plant’s seeds. Once the oil is removed, the leftover material is processed into flour. 



However, this byproduct contains husks and phenolic compounds. These give the flour a dark color and make it harder to digest. So, the research team began by removing these unwanted parts. This step proved essential for making the flour fit for human consumption.



Once refined, the flour became a viable base for two kinds of meat <a href="https://www.earth.com/news/lab-grown-chicken-just-got-a-flavor-and-texture-boost/">alternatives</a>. The first version used flour made from roasted grains. The second version used textured sunflower protein. 



Both recipes were boosted with tomato powder and spices. Oils such as sunflower, olive, and linseed were blended in to improve nutrition and taste. 



After shaping the mixture into mini-burgers, the patties were baked and examined through both sensory and lab-based tests.



<h2 class="wp-block-heading" id="h-baking-testing-and-analyzing">Baking, testing, and analyzing</h2>



The results of these tests showed something promising. The textured sunflower protein burgers stood out. They had better consistency, richer protein content, and a good dose of healthy fats. 



These included monounsaturated fatty acids, which are known for their heart health <a href="https://www.earth.com/news/meat-protein-boosts-survival-but-plants-boost-longevity/">benefits</a>. Additionally, this version of the product was packed with key minerals.



The textured option delivered remarkable levels of nutrients. It offered 49% of the recommended daily intake (RDI) for iron, 68% for zinc, 95% for magnesium, and 89% for manganese. These figures suggest that sunflower protein can contribute meaningfully to daily nutritional needs. 



As the demand for plant-based proteins grows, this research points to a new option that supports both health and sustainability.



<h2 class="wp-block-heading" id="h-sunflower-as-a-clean-meat-alternative">Sunflower as a clean meat alternative</h2>



The researchers chose sunflower seeds due to their rising popularity in both Brazil and Europe. Sunflower oil already holds a strong presence in European kitchens, and sunflower farming is expanding across Brazilian fields. 



Unlike many other plant protein sources, sunflowers are not genetically modified. This can be an important factor for consumers seeking clean-label foods.



Another driving factor is the increasing call for eco-friendly eating habits. Sunflower flour aligns with this trend by making use of existing agricultural outputs in new ways. 



What was once considered a byproduct is transformed into a protein-rich food <a href="https://www.earth.com/news/early-humans-first-used-fire-to-preserve-meat-instead-of-cooking/">source</a>. That’s why this study could have a significant impact on both farming and food manufacturing industries.



<h2 class="wp-block-heading" id="h-taste-and-texture-of-sunflower-meat">Taste and texture of sunflower meat</h2>



For plant-based meat to succeed, taste and texture matter just as much as nutrition. Many plant proteins suffer from strong, sometimes bitter, flavors. Sunflower flour seems to avoid that issue. 



“It should also be noted that, after removing the husks and phenolic compounds, the flour has a very neutral taste and aroma, especially compared to the various vegetable proteins on the market,” said Maria Teresa Bertoldo Pacheco, lead researcher at ITAL’s Center for Food Science and Quality.



Thanks to its neutral flavor, sunflower flour adapts easily to a wide range of recipes. It lets seasonings and textures take center stage without competing background notes, making it a versatile base for creative cooking. This subtle taste profile also makes it more appealing to selective eaters. 



For those cutting back on meat but not willing to compromise on flavor, sunflower-based alternatives could provide a smoother, more satisfying transition.



<h2 class="wp-block-heading" id="h-essential-acids-and-technological-needs">Essential acids and technological needs</h2>



Beyond taste, sunflower flour holds another secret weapon - essential amino acids. These are the building blocks of protein that the body cannot produce on its own. 



“Pacheco also points out that the product has a favorable composition of essential amino acids. This is another factor that could lead to its incorporation into the food industry as a meat product substitute from a nutritional point of view,” noted the researchers.



However, achieving the ideal meat-like texture remains a challenge. For this, specific production methods are required. 



“From a functional-technological standpoint, processes that build fibrous proteins, such as extrusion, are needed to deliver a product with a more meat-like appearance and texture,” said Pacheco. 



Extrusion technology helps create a chewy, meat-like structure that consumers expect from traditional meat products.



<h2 class="wp-block-heading" id="h-benefits-of-global-teamwork">Benefits of global teamwork </h2>



The study not only showcases scientific ingenuity but also reflects the benefits of international collaboration. 



The joint research between Brazilian and German teams marks a milestone in food innovation. Their combined expertise made it possible to refine techniques, share methods, and expand knowledge across borders.



“I think the study provided a lot of positive references, both for making full use of the cultivar and for encouraging the consumption and appreciation of the flour," said Pacheco. 



"The partnership with German researchers was also very important, thanks to the sharing of working techniques, the exchange of knowledge, and the exchange of students and researchers."



<h2 class="wp-block-heading" id="h-looking-forward-to-a-greener-plate">Looking forward to a greener plate</h2>



As plant-based eating becomes more than a passing trend, innovations like sunflower flour can change the game. By using a byproduct of oil extraction, this project turns waste into value. 



With its neutral taste, rich nutrition, and non-GMO status, sunflower flour is ready for more than just research labs. It could soon appear in supermarket aisles and home kitchens, shaped into familiar forms like burgers and sausages. 



Sunflower protein may also inspire other countries to explore local crops with untapped potential. In a world searching for healthy and planet-friendly solutions, this humble seed has much more to offer.



The study is published in the journal <a href="https://www.sciencedirect.com/science/article/abs/pii/S0963996925004958?via%3Dihub" target="_blank" rel="noreferrer noopener">Food Research International</a>.



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Sunflower protein could change the future of sustainable meat

As the world grapples with climate change and resource depletion,...

Evolution is taking an unexpected turn on the volcanic islands of the western Galápagos. Wild tomato plants are producing a toxic blend of chemicals that hasn't existed in their species for millions of years. 



Somehow, these plants have started making molecules more like eggplants than the modern tomato. This bizarre twist in evolution is being studied by scientists at the <a href="https://www.ucr.edu/">University of California, Riverside</a>. 



The research team describes this phenomenon as a rare case of “reverse evolution.” That term raises eyebrows in the world of biology, where evolution is typically seen as a one-way street - not a boomerang.



<h2 class="wp-block-heading" id="h-tomato-evolution-in-reverse">Tomato evolution in reverse</h2>



Normally, evolution moves forward, adapting organisms to current conditions. The idea that it can <a href="https://www.earth.com/news/ferns-evolving-backward-a-new-look-at-the-evolution-of-life/">loop back</a> and restore long-lost traits isn’t just controversial - it’s considered highly unlikely. 



Even when organisms regain something similar to an ancestral trait, they almost never do it through the exact same genetic route. But that’s what these Galápagos <a href="https://www.earth.com/news/tomatoes-have-a-molecular-trick-to-survive-in-extreme-heat/">tomatoes</a> seem to be doing.



“It’s not something we usually expect,” said Adam Jozwiak, a molecular biochemist at UC Riverside and lead author of the study. “But here it is, happening in real time, on a volcanic island.”



The tomatoes aren’t just making alkaloids - bitter chemicals that many nightshade plants, like <a href="https://www.earth.com/news/crops-of-the-future-potatoes-that-thrive-in-heatwaves/">potatoes</a> and eggplants, produce for defense - they’re making an ancient version of them. And these aren't the same ones found in cultivated tomatoes today.



<h2 class="wp-block-heading" id="h-a-chemical-clue-from-the-past">A chemical clue from the past</h2>



The team collected over 30 tomato samples from across the Galápagos. On the eastern, older islands, tomatoes made the expected modern <a href="https://www.earth.com/news/study-reveals-how-pollinators-evade-plant-toxins/">alkaloids</a>. 



But on the younger, rockier western islands, something had changed. Those plants were producing a different form of the molecule - one with a structure seen only in distant tomato ancestors and still present in eggplant relatives.



The reason? A small tweak in enzyme chemistry. Specifically, four amino acid changes in one enzyme flipped the way the plant built its alkaloid molecule.



Two molecules can have the same atoms but act completely differently depending on how those atoms are arranged. In this case, that small change meant the difference between modern and ancient chemistry.



To test the idea, the researchers re-created the enzyme genes in the lab and inserted them into <a href="https://www.earth.com/news/tobacco-and-zinnia-can-thrive-in-polluted-land/">tobacco plants</a>. As a result, the tobacco plants started making the ancestral alkaloids, just like the western island tomatoes.



“Our group has been working hard to characterize the steps involved in alkaloid synthesis, so that we can try and control it,” Jozwiak said.



<h2 class="wp-block-heading" id="h-nature-s-harsh-conditions-may-be-the-trigger">Nature's harsh conditions may be the trigger</h2>



Why is this happening? The researchers think the backward direction of tomato evolution has to do with the islands themselves.



The eastern islands are older, more stable, and have richer ecosystems. The western ones are newer, harsher, and less developed. The plants there may be responding to tougher conditions by falling back on an older, stronger chemical defense.



“It could be that the ancestral molecule provides better defense in the harsher western conditions,” Jozwiak said.



To make sure this was a true throwback, the team ran evolutionary modeling using modern DNA to reconstruct what ancient tomato ancestors might have looked like. The chemistry of today’s western island tomatoes matched those early models.



<h2 class="wp-block-heading" id="h-is-reverse-evolution-real">Is reverse evolution real?</h2>



Referring to this phenomenon in Galápagos tomatoes as "reverse evolution” is a bold claim. There are other examples in nature - snakes regaining limbs, bacteria flipping traits - but they’re rare. This case stands out because the genetic and chemical steps are so precise and clearly documented.



“Some people don’t believe in this,” Jozwiak said. “But the genetic and chemical evidence points to a return to an ancestral state. The mechanism is there. It happened.”



And this shift isn’t just interesting for botanists. It has wider implications for other species - possibly even humans.



“I think it could happen to humans,” noted Jozwiak. “It wouldn’t happen in a year or two, but over time, maybe, if environmental conditions change enough.”



<h2 class="wp-block-heading" id="h-reverse-evolution-as-a-survival-strategy">Reverse evolution as a survival strategy</h2>



The study opens a window into how flexible evolution might be. Traits we thought were gone forever may just be dormant, waiting for the right conditions to reappear.



“If you change just a few amino acids, you can get a completely different molecule,” Jozwiak said. “That knowledge could help us engineer new medicines, design better pest resistance, or even make less toxic produce. But first, we have to understand how nature does it. This study is one step toward that.”



What’s growing on the rocky edges of the Galápagos isn’t just wild tomato - it might be a preview of how life, under pressure, rewrites its own rules.



The full study was published in the journal <a href="https://www.nature.com/articles/s41467-025-59290-4">Nature Communications</a>.



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Reverse evolution? These wild tomatoes are turning back time

Evolution is taking an unexpected turn on the volcanic islands...

Trees may seem like quiet bystanders, but they’re vital to the health of ecosystems, the stability of our climate, and even our own survival. As the planet heats up, these ancient organisms are being pushed to their limits - and the impacts reach far beyond the forest.



A new study has shed light on the future of <a href="https://www.earth.com/news/how-trees-decide-between-growing-and-breathing/">trees</a> under climate change. The research team modeled how more than 32,000 tree species might respond to changing temperatures. 



The findings are stark. If greenhouse gas emissions remain high, most trees on Earth could find themselves living in climates they have never known.



<h2 class="wp-block-heading" id="h-most-trees-will-face-a-changing-climate">Most trees will face a changing climate</h2>



The study reveals a major upheaval for the world’s <a href="https://www.earth.com/news/traditional-forest-farming-is-an-overlooked-climate-solution/">trees</a>. According to study lead author Dr. Coline Boonman from <a href="https://www.wur.nl/en.htm" target="_blank" rel="noreferrer noopener">Wageningen University</a>, the team found that nearly 70% of tree species will see significant climate shifts in at least part of their range by the end of this century.



"For some species, over half of their habitat could be affected under an extreme 4°C warming scenario," said Dr. Boonman.



This means trees in these regions will face temperatures, rainfall, and seasonal patterns outside their historical experience. For organisms adapted to specific conditions, these shifts may prove overwhelming. Some species may fail to reproduce. 



Others may suffer from drought, disease, or increased competition. <a href="https://www.earth.com/news/amazon-trees-glow-more-under-stress-but-photosynthesize-less/">Trees</a> cannot quickly move. They grow slowly, with some species taking decades to mature. As the climate shifts fast, many may be left behind.



<h2 class="wp-block-heading" id="h-climate-will-hit-some-regions-harder">Climate will hit some regions harder</h2>



The study does not just warn of future risks. It shows where those risks are most concentrated. The researchers mapped “exposure hotspots" - regions where tree diversity is most likely to face serious disruption.



These include large parts of Eurasia, northwestern North America, northern Chile, and the Amazon Delta. In these areas, the changes in climate could be so extreme that native species may not survive without human intervention.



“This research provides a global map of where <a href="https://www.earth.com/news/trees-are-part-of-the-climate-solution-but-not-the-whole-answer/">trees</a> are most vulnerable to climate change,” explained Dr. Boonman. “It’s a crucial tool for conservation planning and ecosystem resilience.”



Understanding where the most vulnerable regions lie helps conservationists and land managers act before it is too late. 



Some tree species might be relocated. Others may require intensive management or protection from added stressors like logging and land conversion. Without this data, efforts may arrive too late or miss the most critical areas.



<h2 class="wp-block-heading" id="h-long-lives-and-heightened-risk">Long lives and heightened risk</h2>



Unlike animals, most trees cannot shift their range quickly in response to climate change. Their seeds may spread, but their growth is slow. Entire forests take decades or centuries to establish. That makes them especially prone to harm from fast-moving changes. 



Temperature increases, erratic rainfall, or intense droughts can all break the rhythm trees rely on to flower, fruit, and regenerate.



Importantly, this study only looked at climate exposure. It did not include other threats such as illegal logging, invasive pests, or pollution. This means that the risk to tree species is likely even greater than reported. 



A tree struggling with drought may also be weakened against disease. A forest hit by fire may face development before it can recover. Climate stress is just one part of a complex web of pressures.



<h2 class="wp-block-heading" id="h-refuges-amid-the-heat">Refuges amid the heat</h2>



Not all news from the study was grim. The researchers also identified what they call climate refugia. These are areas expected to remain relatively stable despite the overall global warming trend. 



In such zones, trees could persist with less stress, acting as sanctuaries for biodiversity if protected. These stable environments offer a rare opportunity. If shielded from human interference, they may become the lifeboats of future forests. 



In a rapidly warming world, these refuges could harbor tree species long enough for the climate to stabilize or for new conservation tools to be deployed. Their preservation is vital for long-term efforts to protect forest ecosystems.



<h2 class="wp-block-heading" id="h-mitigation-and-conservation-strategies">Mitigation and conservation strategies </h2>



The study emphasizes the importance of quick and strategic conservation work. Protecting refugia must become a priority. 



Likewise, tracking high-risk species and identifying how they respond to stress will be key. In some cases, assisted migration, or moving trees to safer areas, may be the only option to preserve them.



Dr. Josep Serra-Diaz (Botanical Institute of Barcelona, CSIC-CMCNB), co-author of the study, called for urgent and focused global action. 



“This provides a comprehensive global study that shows where to focus our attention to conserve and where mitigation and adaptation need to be focused, looking at small scale opportunities to keep our treed ecosystems diverse," said Dr. Serra-Diaz.



<h2 class="wp-block-heading" id="h-climate-risks-to-tree-species">Climate risks to tree species</h2>



We cannot separate tree survival from our own. Forests play a vital role in regulating climate. 



Trees cool the atmosphere, absorb carbon, and even support water systems that nourish agriculture. If forests collapse, the damage will ripple through food systems, cities, and economies.



As climate exposure increases, preserving the stability of forests is not just an ecological concern. It is a human necessity. The question now is not whether trees will be affected, but whether we can act in time to protect them. 



Through research, planning, and collective action, there is still a chance to safeguard these ancient allies. But the window is closing.



The study is published in the journal <a href="https://www.pnas.org/doi/10.1073/pnas.2420059122" target="_blank" rel="noreferrer noopener">Proceedings of the National Academy of Sciences</a>.



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Tree species face unprecedented climate shifts across their ranges

Trees may seem like quiet bystanders, but they’re vital to...

We know the oceans are changing. But how have they changed over the last half-billion years? Until now, we had no clear measure of how the total mass of ocean life - not just its variety - has evolved over deep time. 



In a first-of-its-kind effort, scientists from <a href="https://www.stanford.edu/">Stanford University</a> measured how the biomass of marine organisms - the actual amount of living material in the ocean - has changed over the last 540 million years.



<h2 class="wp-block-heading" id="h-long-term-changes-in-ocean-life">Long-term changes in ocean life</h2>



The study shows a long-term trend of rising <a href="https://www.earth.com/news/deforestation-causes-biomass-loss-beyond-directly-affected-areas/">biomass</a>, with noticeable crashes during major extinction events. This pattern closely tracks with known increases in marine biodiversity, suggesting a deep link between how much life the ocean holds and how varied that life is.



Study lead author Pulkit Singh is a postdoctoral scholar in Earth and Planetary Sciences in the <a href="https://sustainability.stanford.edu/">Stanford Doerr School of Sustainability</a>.



“Understanding the amount of biomass is important because it represents key traits about an ecosystem that are not captured by the number of species or even the number of niches that they fill,” said Singh.



“But as we move into the past, our measurements of biomass are very limited, so that was the big gap in biological history we wanted to fill with our study.”



<h2 class="wp-block-heading" id="h-ocean-life-changes-across-history">Ocean life changes across history</h2>



Getting to this result took years of meticulous work. Singh and his team dug into data from over 7,700 marine limestone samples spanning hundreds of millions of years. 



The samples came from more than 100 published studies and Singh’s own data collection. Each rock was cut and polished into slices thin enough for light to pass through, then examined under a microscope. 



Using a method called petrographic point-counting, the researchers calculated what percentage of each sample was made up of skeletal remains - <a href="https://www.earth.com/news/fossilized-shells-can-help-predict-the-impacts-of-climate-change/">shells</a> from animals, certain algae, and single-celled protists.



It’s not just busywork. The amount of shell material in these rocks tells scientists how much living material existed at different points in Earth’s history. 



More shells in the ocean generally mean more <a href="https://www.earth.com/news/all-living-things-emit-a-subtle-glow-that-ceases-at-death/">living things</a>. And more life usually means more energy flowing through ecosystems - a strong signal of planetary health.



<h2 class="wp-block-heading" id="h-the-challenge-of-measuring-biomass">The challenge of measuring biomass </h2>



Tracking <a href="https://www.earth.com/news/global-biodiversity-crisis-is-actually-worse-than-we-thought/">biodiversity</a> through deep time has been part of science since the 19th century. But measuring biomass - the total amount of living material - is a much rarer effort. 



Measuring biomass demands massive amounts of data and offers no guarantee of a clear pattern.



“The first quantitative effort to document and graph biodiversity across geological time was made in 1860, but until Pulkit’s paper, there’s never been a corresponding biomass-across-time paper,” noted senior study author Professor Jonathan Payne. 



“I’m impressed by his intellectual courage to go and take a chance on a project like this.”



<h2 class="wp-block-heading" id="h-biomass-over-millions-of-years">Biomass over millions of years</h2>



The earliest rocks examined, from the Cambrian period about 540 million years ago, showed low shell content - under 10 percent on average. 



By the Ordovician, starting around 485 million years ago, shell percentages rose. This increase lines up with the Cambrian Explosion, a period when life rapidly diversified.



Early on, sponges were major players. Later, they were overtaken by echinoderms (ancestors of starfish) and arthropods like trilobites. 



<h2 class="wp-block-heading" id="h-a-gradual-increase-in-biomass">A gradual increase in biomass </h2>



Over the next 230 million years, shell content stayed mostly above 20 percent, aside from big dips during <a href="https://www.earth.com/news/marine-life-became-strangely-uniform-after-earths-worst-mass-extinction/">mass extinctions</a>.



One of the sharpest declines came during the Permian-Triassic extinction about 250 million years ago - the “Great Dying.” Shell material dropped to just 3 percent. 



Life rebounded after that, although smaller setbacks followed during the end-Triassic and the well-known Cretaceous-Paleogene extinction 66 million years ago.



In our current era - the Cenozoic - shell volume climbed above 40 percent, boosted by creatures like mollusks and corals. “The overall pattern that we were able to capture is that it’s a gradual increase,” Singh said.



<h2 class="wp-block-heading" id="h-consistent-biological-patterns">Consistent biological patterns </h2>



The team knew they had to rule out alternative explanations. Maybe shell-boring predators were less common in the past. Maybe certain environments were overrepresented in the data. 



To check, the researchers sorted samples by depth, latitude, and geological setting. The trend held steady.



“The more tests we did and the more we divided our dataset, we realized that these big biological patterns we were seeing stayed over time,” Singh said.



<h2 class="wp-block-heading" id="h-why-did-ocean-life-keep-growing">Why did ocean life keep growing?</h2>



The answer may come down to diversity. As life evolved to fill more ecological roles, it got better at using available energy. Organisms became more specialized, more interconnected. 



That allowed ecosystems to recycle nutrients more efficiently - from sunlight-eating phytoplankton to decomposers returning nutrients to the cycle.



“The overall idea is that there is more food available in ecosystems and because of that, the ecosystems can support more life, there’s more energy available, and that leads to greater abundance expressed in biomass,” Singh said.



<h2 class="wp-block-heading" id="h-humans-are-rapidly-changing-ocean-life">Humans are rapidly changing ocean life</h2>



The study paints a long view of life’s upward climb, but it ends before the modern age. Today’s oceans face threats from overfishing, pollution, acidification, and climate change. 



Researchers agree - we’re already in the middle of a human-caused sixth mass extinction. And if biodiversity keeps falling, we may see long-term drops in biomass too - with effects that could last millions of years.



“From our study’s perspective, modern times are quite complicated given the extent of human activity that’s rapidly altering conditions planetwide, including in the oceans,” said Payne. 



“But our findings show that overall biomass is linked to biodiversity and that losses in biodiversity may suppress productivity for geologically meaningful intervals, adding one more argument of why conserving biodiversity is essential for the health of humans and our planet.”



The full study was published in the journal <a href="https://linkinghub.elsevier.com/retrieve/pii/S0960982225007353">Current Biology</a>.



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Fossils reveal 500 million years of changes in ocean life

We know the oceans are changing. But how have they...

Endangered plants

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