An international team of scientists drilled 500 meters through West Antarctica’s Kamb Ice Stream and uncovered a vast, slow-moving channel of water flowing beneath the ice. 



This newly observed subglacial river, which surges roughly once a decade, challenges long-standing assumptions about how meltwater drains beneath the Ross Ice Shelf. 



The discovery offers critical insight into Antarctic hydrology and may significantly refine projections of future sea-level rise.



<h2 class="wp-block-heading" id="h-a-two-week-trek-into-the-interior">A two-week trek into the interior</h2>



In late 2021, scientists with <a href="https://www.antarcticscienceplatform.org.nz/" target="_blank" rel="noreferrer noopener">New Zealand’s Antarctic Science Platform</a> left Scott Base and travelled 1,200 kilometers inland by tracked vehicles. 



Their goal was a site where the Kamb Ice Stream - 350 kilometers long and 100 kilometers wide - slides beneath the <a href="https://www.earth.com/news/mysterious-force-moves-ross-ice-shelf-antarctica-every-day/" target="_blank" rel="noreferrer noopener">Ross Ice Shelf</a>. There, in constant daylight and temperatures near –10 °C, engineers set up a temporary camp with an airstrip and weatherproof labs.



Using 80°C water pumped at high pressure, they melted a 30-centimeter-wide borehole through the<a href="https://www.earth.com/news/antarctic-ice-sheet-past-present-and-future/" target="_blank" rel="noreferrer noopener"> ice sheet</a> to the bedrock below. Cameras and sensors followed the drill head into the cavity, capturing real-time images and data.



<h2 class="wp-block-heading" id="h-hidden-river-revealed-in-antarctica">Hidden river revealed in Antarctica </h2>



Expedition leader Huw Horgan conducts is an expert at <a href="https://ethz.ch/en.html" target="_blank" rel="noreferrer noopener">ETH Zurich</a> and at the <a href="https://www.wsl.ch/en/" target="_blank" rel="noreferrer noopener">Swiss Federal Institute for Forest, Snow, and Landscape Research</a>.



“We struck water at the end of the borehole and with the help of our camera, we even discovered a school of lobster-like creatures - 400 kilometers from the open ocean,” said Horgan.



Echo-soundings showed the channel to be roughly 100 meters high and 200 meters wide - large enough to admit a city block. Instruments registered temperature, salinity, and sediment load, revealing a mixture dominated by seawater that had crept inland beneath the shelf.



<h2 class="wp-block-heading" id="h-trickling-rivers-beneath-the-ice">Trickling rivers beneath the ice</h2>



Only a trickle of freshwater - less than one cubic meter per second - travels seaward under the glacier. 



“This amount of water is much smaller than what the existing models had predicted,” Horgan said. Because previous simulations assumed greater discharge, many estimates of basal lubrication and melt will need to be recalculated.



The sluggish current does not equate to a stable system, however. Layered sediments removed from the cavity floor preserve signs of sudden, far larger floods.



<h2 class="wp-block-heading" id="h-lakes-release-sudden-surges">Lakes release sudden surges</h2>



“We suspect that the water comes from subglacial lakes upstream. These lakes fill and empty in certain cycles. When they empty, a flood of water rushes towards the sea,” Horgan explained.



Core samples indicate these large flushes occur about once every ten years, with smaller bursts likely escaping detection. Such pulses can scour channels, deliver nutrients to under-ice ecosystems, and momentarily elevate melting where fresh and marine waters meet.



<h2 class="wp-block-heading" id="h-rivers-shape-ice-shelfs">Rivers shape ice shelfs</h2>



“Subglacial watercourses play a central role in the melting of the ice shelf,” Horgan said. 



The Ross Ice Shelf acts as a massive buttress, slowing the glaciers that feed it; any process that thins this floating barrier can accelerate <a href="https://www.earth.com/news/emergency-meeting-reveals-the-alarming-extent-of-antarcticas-ice-loss/" target="_blank" rel="noreferrer noopener">ice loss</a> from the Antarctic interior.



“Our findings are therefore a prerequisite for developing new models that describe the melting of the ice shelf and predict <a href="https://www.earth.com/news/global-sea-levels-spiked-dramatically-in-2023/" target="_blank" rel="noreferrer noopener">sea-level rise</a> even more accurately.” 



Incorporating both the steady marine inflow and the episodic lake-drainage floods will improve projections used by coastal planners worldwide.



<h2 class="wp-block-heading" id="h-planning-for-future-surges">Planning for future surges</h2>



The team intends to return during the 2025–26 austral summer to install long-term instruments that will log pressure, flow speed, and chemistry through multiple flood cycles. 



By comparing those records with satellite altimetry and radar, researchers aim to learn how a warming climate might amplify the frequency or magnitude of these hidden surges.



Studying life in the dark cavity is also on the agenda, prompted by the unexpected sighting of crustacean-like animals far from open water. The biology could reveal how nutrients move from buried rivers to under-ice ecosystems across Antarctica.



<h2 class="wp-block-heading" id="h-rivers-drive-ice-dynamics">Rivers drive ice dynamics</h2>



Hot-water drilling through the Kamb Ice Stream has opened a direct window onto processes that were previously inferred only from remote sensing and theoretical models. 



Each new measurement tightens the link between unseen hydrology and the fate of the planet’s largest ice shelf, edging science closer to reliable forecasts of sea-level rise in a warming world.



With more expeditions planned and permanent instruments on the horizon, the buried <a href="https://www.earth.com/news/hidden-rivers-beneath-antarctic-ice-reshape-sea-level-predictions/" target="_blank" rel="noreferrer noopener">rivers</a> of Antarctica are finally beginning to surrender their secrets.



The study is published in the journal <a href="https://www.nature.com/articles/s41561-025-01687-3" target="_blank" rel="noreferrer noopener">Nature Geoscience</a>.



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Hidden rivers accelerate the melting of Antarctica’s ice sheets

An international team of scientists drilled 500 meters through West Antarctica’s Kamb Ice Stream and uncovered a vast, slow-moving channel of water flowing beneath the ice. This newly observed subglacial river, which surges roughly once a decade, challenges long-standing assumptions about how meltwater drains beneath the Ross Ice Shelf. The discovery offers critical insight into Antarctic hydrology and may significantly refine projections of future sea-level rise. A two-week trek into the interior In late 2021, scientists with New Zealand’s Antarctic Science Platform left Scott Base and travelled...

A fossilized dinosaur brain from 133 million years ago was found in Sussex, England. 

Fossil records rarely preserve soft tissue such as brains and hearts. In the past, nearly all study of dinosaur soft tissue has been reconstructed from fossil bones. This recent discovery is thought to be the first time a genuine fossilized brain has been identified.

The approximately 133-million-year-old brain is said to have belonged to a close relative of the Iguanodon, a spike-headed herbivorous dinosaur. 

This small fossil was originally discovered in 2004 on the beach at Bexhill-On-Sea in East Sussex, UK and was missing a skeleton to help identify it. Only recently was a team of researchers, including Dr. David Norman of the University of Cambridge and the late Dr. Martin Brasier of the University of Oxford, able to determine it was a fossilized dinosaur brain. 

To assist in visualizing very small features of the brain, Professor Brasier partnered with researchers from the University of Western Australia, who helped create high-resolution images of parts of the brain, revealing the outer layers and capillary remnants within the cortex. The brain structure, in particular that of the outer layers, shows remarkable similarity to modern birds and crocodilians, and likely functioned in fairly similar ways.

Dr. Norman said, "Brain tissues are incredibly fragile and it is quite incredible that the animal died in circumstances that uniquely led to their preservation – through a process of 'pickling' and then mineral replacement . . . . What we think happened is that this particular dinosaur died in or near a body of stagnant water, and its head ended up partially buried in the sediment at the bottom. Since the water had so little oxygen and was so acidic, the soft tissues of the brain were likely preserved and cast before the rest of its body was buried in the sediment."

Such fortuitous circumstances are extremely rare in fossilization – this discovery can provide a unique window into the brain of this ancient dinosaur.

—

The research team presented their findings at the latest meeting of <a href="http://vertpaleo.org/" target="_blank" rel="noopener">The Society of Vertebrate Paleontology</a> which was founded in 1940 and works tirelessly to “advance the science of vertebrate paleontology throughout the world.”

<a href="https://ukfossils.co.uk/2012/01/24/bexhill/" target="_blank" rel="noopener">Bexhill-On-Sea</a> is a favorite spot for fossil hunters after turn-of-the-century storms exposed dinosaur trackways.

Fossilized dinosaur brain from 133 million years ago found in UK

A fossilized dinosaur brain from 133 million years ago was...

Sad report on Washington State orcas: scientists reveal drastic measures must be taken in order to avoid further depletion of the regional killer whales.

The orca is a magnificent creature also known as the killer whale. They are skilled hunters able to overpower large marine animals, but they are not known for violence towards humans. To aid them in their hunt, they grow huge teeth of up to 4 inches in length. Orcas are characterized by their long dorsal fin and black &amp; white coloring, and are considered to be the largest of the dolphin family – full grown whales can weigh up to six tons, with a length of 32 feet.

Terrible news for the orca population of Washington waters emerged yesterday, with three whales presumed missing or dead since this summer.

Following these deaths, the number of Washington State orcas has dropped to 80, the lowest frequenting these waters in decades, the Center for Whale Research reported yesterday. These impressive creatures face constant threats from pollution, human interference, and lack of nourishment, having been listed as endangered in 2005.

Experts say the orcas are being affected by a decline in the availability of suitable nutrition, which is hitting mothers and newborns hard.

Ken Balcomb, principal investigator at the Center, called for dams on the Lower Snake River to be breached, which would release more salmon into the habitat. These whales have a strong preference for chinook salmon, which are depleted in the area.

"We know what we need to do: feed them," Balcomb said.

However, there is opposition to the removal of the dams, with criticism coming from the local community who point out the hydroelectric power created by the dams powers the regional economy.

Jim Waddell, retired engineer with the group DamSense, added, "There's no reason these dams couldn't be breached."

This issue has been the focus in a long-running lawsuit that had its latest ruling in Portland this past May, when U.S. District Judge Michael H. Simon rejected the government's latest plan for offsetting the damage that dams in the Columbia River Basin pose to salmon. Judge Simon ordered them to come up with a new plan by March 2018.

Let’s hope they reach a solution before more orcas in the region perish.

—

<a href="http://www.whaleresearch.com/about-us" target="_blank" rel="noopener">The Center for Whale Research</a> is dedicated to the study and conservation of the Southern resident killer whale (orca) population in the Pacific Northwest. It’s a non-profit organization which has been running for forty years.

Sad report on Washington State orcas

Sad report on Washington State orcas: scientists reveal drastic measures...

Paleolithic decorating tips have been revealed in a new study from Catalan researchers.

Cave lion pelts were used by ancient peoples as a trendy, multipurpose decorative tool.

Humans alive during the Paleolithic area certainly had bigger problems to worry about than interior decor. However, archaeologists studying caves in present-day Spain recently made a unique fossil discovery that sheds light on ancient cave living. 

[caption id="attachment_95672" align="alignleft" width="150"]<img class="size-thumbnail wp-image-95672" src="http://www.earth.com/wp-content/uploads/2016/10/pelts-150x150.jpg" alt="Paleolithic decorating tips have been revealed by a new study from Catalan researchers." width="150" height="150" /> Paleolithic decorating tips[/caption]

Prehistoric humans would perform sacred rituals deep in these caves. The La Garma cave has shed light on what life could have been like 16,000 years ago. Archeologist Edgard Ceramos from the Catalan Institute of Human Paleoecology and Social Evolution and his team have spent several years investigating the cave for fossils, generally finding bones from horses and goats.

Recently, the team discovered nine fossilized claw bones from an extinct cave lion. The Eurasian cave lion was larger than an African lion and went without a mane. Dr. Ceramos explained that since the only lion remains found were claws, they can presume that they were brought in attached to the lion’s skin. Each claw also had a similar marking that appeared to have been made by human tools.

Ancient people are thought to have hunted the Eurasian lion until it went extinct roughly 2,000 years later. They would skin the lion to make pelts for a variety of purposes: protection, warmth, shelter.

Over time the pelts decomposed, leaving only the claws. While there is still much mystery surrounding the nature of the Paleolithic decorating tips' ancient rituals, we know one thing for sure: our ancestors loved to adorn their homes with luxurious animal skins.

—

Read the full journal over at <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0163591" target="_blank" rel="noopener">PLOS ONE</a>.

Paleolithic decorating tips revealed

Paleolithic decorating tips have been revealed in a new study...

Earth news review: Earth-related stories from other parts of the web this week

Crustaceans in the scariest part of the ocean wear bacteria as camouflage to hide from predators – read the full article on <a href="http://www.dailymail.co.uk/sciencetech/article-3878602/Crustaceans-ocean-s-twilight-zone-wear-CAMOUFLAGED-Bacteria-coating-helps-creatures-avoid-predator-s-gaze.html">Daily Mail</a>.

Latest Global Warming prediction: Southern Spain to turn into a desert – read the full article at <a href="http://hosted.ap.org/dynamic/stories/E/EU_GLOBAL_WARMING_MEDITERRANEAN?SITE=AP&amp;SECTION=HOME&amp;TEMPLATE=DEFAULT&amp;CTIME=2016-10-27-15-16-57">The Associated Press</a>.

Sea in Antarctica to become the world’s largest protected zone – read the full story over at the <a href="http://www.bbc.com/news/science-environment-37789594">BBC</a>.

The War On Salmon: More Pacific Coast Hatchery Salmon to be added to the Endangered Species List – full article at <a href="http://hosted.ap.org/dynamic/stories/U/US_LISTED_SALMON_HATCHERIES?SITE=AP&amp;SECTION=HOME&amp;TEMPLATE=DEFAULT">The Associated Press</a>.

Scandal: Gene study shows ancient interbreeding between chimpanzees and bonobos – read the full article on <a href="https://www.eurekalert.org/pub_releases/2016-10/wtsi-gsr102116.php">EurekAlert!</a>

80,000 acres off the New York coast cleared for wind energy – read the full article on <a href="http://www.upi.com/New-York-set-for-offshore-wind-after-environmental-review/9101477650265/?nll=1">UPI</a>.

141 Arrested in North Dakota Pipeline protest following tense police standoff – read more at <a href="http://www.reuters.com/article/us-usa-pipeline-regulations-idUSKCN12R2GI">Reuters</a>.

Awesome Video: Monkeys make their own tools from stone – watch over at Nature Video <a href="https://youtu.be/j0jqJUF1nOs">YouTube</a>.

Caitlyn Clownfish: How clownfish can actually change sex for survival – read the full article on <a href="http://blogs.nature.com/houseofwisdom/2016/10/how-changing-sex-helps-nemo-survive-and-adapt.html">houseofwisdom</a>.

Hundreds of blackbirds organize flash mob in Walmart parking lot – just in time for Halloween, read more at <a href="http://www.upi.com/Odd_News/2016/10/28/Hundreds-of-blackbirds-descend-on-Texas-Walmart-parking-lot/5221477660825/?nll=1">UPI</a>.

Mosquitos armed with bacteria released in South America to combat Zika – read the full article on <a href="http://www.nature.com/news/rio-fights-zika-with-biggest-release-yet-of-bacteria-infected-mosquitoes-1.20878?WT.ec_id=NEWS-20161027&amp;spMailingID=52628621&amp;spUserID=MjI5MDcwMTc5OTg1S0&amp;spJobID=1025167321&amp;spReportId=MTAyNTE2NzMyMQS2">Nature.com</a>.

Goopy Mummies: Climate Change turning ancient Chilean mummies into black slime – get the full picture at the <a href="http://www.dailymail.co.uk/sciencetech/article-3879760/Chile-seeks-help-protect-worlds-oldest-mummies.html">Daily Mail</a>.

NASA’s Operation IceBridge to study changing polar landscape – read more at <a href="https://blogs.nasa.gov/earthexpeditions/2016/10/18/nasa-icebridge-fit-to-fly/">NASA</a>.

White House holds summit for experts studying arctic changes – read the full article at <a href="http://earthobservatory.nasa.gov/IOTD/view.php?id=88989&amp;src=iotdrss">NASA</a>.

The real story behind “Fall” vs “Autumn” – join the debate at <a href="http://www.slate.com/blogs/browbeat/2012/09/29/why_does_autumn_have_two_names_how_the_third_season_became_both_autumn_and_fall_.html?nl=morning-briefing&amp;em_pos=large&amp;emc=edit_nn_20161028">Slate</a>.

Earth news review

Earth news review: Earth-related stories from other parts of the...

Super emitters are responsible for over 50% of U.S. methane emissions, according to a new study.

A new study from Stanford University states only a few natural gas well are responsible for more than half of leaked methane gas in the USA, suggesting that if these leaks were fixed, the super emitters could significantly reduce the leaks of this potent greenhouse gas.

Study co-author Dr. Adam Brandt, assistant professor of energy resources engineering at Stanford’s School of Earth, Energy &amp; Environmental Sciences, said, “We’re finding that when it comes to natural gas leaks, a 50/5 rule applies: that is, the largest 5 percent of leaks are typically responsible for more than 50 percent of the total volume of leakage.”

The researchers hope the suggestions made in the study can significantly reduce the emissions of methane, which are thought to be one of the causes of climate change, into the environment.

Natural gases are on the uptake globally. Scientists hypothesize that natural gases may serve as a “bridge fuel” for countries while they make the transition from fossil fuels to renewable energy resources. Natural gases contain high levels of methane, which is a highly potent greenhouse gas – so even small leaks might wreak havoc on our climate.

Brandt and his colleagues analyzed around 15,000 measurements from 18 prior U.S gas leak studies, employing the statistical technique called extreme value theory.

“Extreme value theory has been used to study everything from major flood events to crop losses brought on by drought and stock market crashes,” Dr. Brandt said. “In all of these cases, infrequent events really drive a lot of decision-making and expenditure or have big economic consequences. We are the first to apply this technique in a formal and rigorous way to natural gas leaks.”

The approach revealed that a few outsized leaks were responsible for between 40 and 90 percent of the emissions. “Other studies have indicated that methane emissions follow a so-called ‘heavy-tailed’ distribution, but what we’re saying is that this pattern is widespread and even more extreme than previously thought,” Brandt said. “If companies can identify and fix the leaks in a small number of top emitters, that will go a long way toward reducing methane emissions in the U.S. The challenge will be coming up with methods that allow you to find the big leaks as quickly as possible. Because large leaks are such an important contributor to the problem, we may be able to use less-sensitive but cheaper detection technologies and still find the majority of problem leaks.”

—

Read more in the <a href="http://pubs.acs.org/doi/abs/10.1021/acs.est.6b04303" target="_blank" rel="noopener">Environmental Science &amp; Technology</a> journal.

Super emitters may cause over 50% of U.S. methane emissions

Super emitters are responsible for over 50% of U.S. methane...

San Francisco Bay waters have been found to contain a harmful freshwater algae toxin, a new study shows.

Harmful toxins from freshwater algal blooms are causing worldwide issues in rivers and lakes, and have also contaminated coastal waters.

High levels of this freshwater algae toxin produced by  have been found in the San Francisco Bay. Although harvested shellfish from California's coastal waters is closely monitored for toxins, there is no routine testing for this toxin, known as microcystin.

The pollutant, which can cause liver damage, is produced by a type of blue-green algae that thrives in warm, nutrient-rich water and is present in many Californian lakes and rivers – including rivers flowing into the San Francisco Bay Delta.

Dr. Raphael Kudela, the Lynn Professor of Ocean Health at U.C. Santa Cruz, led his team to test for microcystin in shellfish after detecting the toxin in San Francisco Bay water samples. The researchers tested mussels sourced from five Bay sites, conducting experiments on mussels and oysters to determine both how quickly the shellfish absorb the toxin and how long it takes to clear from their tissues.

"We found that this freshwater toxin accumulates in shellfish, both mussels and oysters, and that in San Francisco Bay, the toxin levels in some mussels exceed the recommended guidelines for consumption by quite a bit," Kudela said.

First author Dr. Corinne Gibble, environmental scientist with the California Department of Fish and Wildlife, said the findings show tests for microcystin should be added to existing shellfish monitoring programs.

"There is monitoring of shellfish for marine-derived toxins, but because this is a freshwater toxin, no one has been looking for it. Now it seems microcystin is something we should be monitoring as well," Dr. Gibble said.

Between May and October there is a state quarantine in place on harvesting mussels for human consumption. The research team has been working closely with state agencies to continually monitor this problem.

"The agencies have been very responsive," Dr. Kudela commended. "There is potential for this toxin to affect humans, but most of our samples are still below the recommended limits for human consumption, so people shouldn't panic and think they can't eat shellfish."

The most pressing concern is the effect this toxin could have on mammals such sea otters, whose diet consists of shellfish. In 2010, Dr. Kudela reported that microcystin poisoning had killed several sea otters in Monterey Bay.

"This really highlights the connectivity between what people do on land and what happens in the ocean," he said. "A lot of shellfish farms are downstream from freshwater sources, so we want to raise awareness of this issue."

Microcystin is becoming a bigger problem around the world due to warming temperatures and nutrient pollution. In the Bay Area, the presence of this toxin caused closures of public swimming areas.

Dr. Kudela suspects the freshwater algae toxin polluting the San Francisco Bay originate from several sources, citing rivers, among others. He believe the California drought has accelerated the problem.

"The rains help by flushing things out. Warm, dry conditions favor these blooms, so we've been seeing more of them lately than we would without the drought," Dr. Kudela said.

—

Read more over at <a href="http://www.sciencedirect.com/science/article/pii/S1568988316301639" target="_blank" rel="noopener">Harmful Algae</a> journal.

Freshwater algae toxin found in San Francisco Bay

San Francisco Bay waters have been found to contain a...

Hurricane Seymour fading fast as a new image is caught.

NOAA's satellite captured an image of the post-tropical cyclone Hurricane Seymour which is fading fast in the Eastern Pacific. Seymour is expected to dissipate in a day as it moves through hostile environmental conditions.

The National Hurricane Center (NHC) issued their final advisory on the storm at 5 am EDT when they noted that Seymour had become post-tropical.

Seymour's remnants had no organized thunderstorm development when the images were captured. The storm resembled a wedge of clouds. 

National Hurricane Center (NHC) forecaster Richard Pasch said "The cyclone has lacked organized deep convection within 60-100 nautical miles of its center for over 12 hours, and no longer qualifies as a tropical cyclone. Since Seymour has become a post-tropical remnant low, advisories are being discontinued."

At 5 a.m. EDT, the center of Post-Tropical Cyclone Seymour was located near 22.4 degrees north latitude and 122.8 degrees west longitude. That's about 820 miles west of the southern tip of Baja California, Mexico. The post-tropical cyclone was moving toward the north near 8 mph. NHC said a north-northeastward motion is expected to begin later today and continue into Saturday, Oct. 29. Maximum sustained winds have decreased to near 35 mph with higher gusts.

The NHC said the low-pressure area will move through "an extremely hostile environment of strong southwesterly wind shear of 40-45 knots and sea surface temperatures cooler than 73.4 degrees Fahrenheit during the next couple of days. Strong vertical wind shear can tear a storm apart, while sea surface temperatures cooler than 80 degrees Fahrenheit are too cold to maintain a tropical cyclone. These environmental factors should cause the remnant low to dissipate in a couple of days.

The image was created by the NASA/NOAA GOES Project at NASA's Goddard Space Flight Center, Greenbelt, Maryland. Source, <a href="https://www.nasa.gov/feature/goddard/2016/seymour-eastern-pacific">NASA</a>.

Hurricane Seymour fading fast

Hurricane Seymour fading fast as a new image is caught....

Air pollution inhalation avoidance suggestions were outlined by scientists today.

Want to avoid getting a mouthful of air pollution? Faculty at the University of British Columbia have suggested optimal walking and cycling speeds to avoid airborne nasties today.

The scientists suggest that cyclists should ride between 12 and 20 kilometers per hour on city roads, and pedestrians should walk at 2 to 6 km/h. By keeping within these speeds, we can avoid pollution inhalation, while still reaping the health benefits of exercise.

"The faster you move, the harder you breathe and the more pollution you could potentially inhale, but you also are exposed to traffic for a shorter period of time. This analysis shows where the sweet spot is," said Dr. Alex Bigazzi, a UBC transportation expert in the Department of Civil Engineering and School of Community and Regional Planning.

Using data from 10,000 people, Bigazzi calculated the ideal travel speeds for different age and sex groups. He coined the term “minimum-dose speeds” (MDS) to describe his findings. 
<ul>
 	<li style="font-weight: 400;">Female cyclists under 20 should travel at 12.5 kilometers per hour.</li>
 	<li style="font-weight: 400;">Male cyclists under 20 should travel at 13.3 kilometers per hour. </li>
 	<li style="font-weight: 400;">Ideal travel speeds are between 13 and 15 kilometers per hour for female and male cyclists in the 20-60 age group.</li>
</ul>
"If you move at much faster speeds than the MDS – say, cycling around 10 kilometers faster than the optimal range – your inhalation of air pollution is significantly higher," said Bigazzi. "The good news is, the MDS numbers align pretty closely with how fast most people actually travel."

You can read these findings over at the <a href="http://www.tandfonline.com/doi/abs/10.1080/15568318.2016.1238984" target="_blank" rel="noopener">International Journal of Sustainable Transportation</a>. Bigazzi also reported on the high amounts of toxic chemicals absorbed by cyclists on busy city streets, which you can read <a href="http://pubs.acs.org/stoken/presspac/presspac/abs/10.1021/acs.est.6b01159" target="_blank" rel="noopener">here</a>.

Tips for avoiding breathing air pollution

Air pollution inhalation avoidance suggestions were outlined by scientists today....

Plant hormone evolution is the focus of a new study.

Plants are rather assertive organisms. Back in Earth’s deep, dark history, plants found homes in mosses and needed moisture to thrive. When confronted with dry periods, they became resourceful and figured out ways to survive.

Ferns developed an impermeable waxy covering. Pores in the leaves followed, allowing the plants to exchange carbon dioxide and oxygen with the environment. When dry conditions strike, ferns close these pores to prevent precious water stores from being lost through evaporation.

This assumption is backed by new findings published in Proceedings of the National Academy of Sciences. Together with an international research team from Würzburg (Germany), Hobart (Australia) and Purdue (USA), Professor Rainer Hedrich from the Julius-Maximilians-Universität Würzburg (JMU) in Bavaria examined the pore regulation of land plants at an early evolutionary stage.

His experiments focused on abscisic acid (ABA), a plant hormone that regulates water balance and pore function in higher flowering plants. ABA is also essential for triggering dormancy.

The research found differing results for ferns and flowering plants, aiming to conduct further tests to understand their hypotheses.

—

Read the full study <a href="http://www.pnas.org/content/early/2016/10/25/1606614113" target="_blank" rel="noopener">here</a>.

Plant hormone evolution

Plant hormone evolution is the focus of a new study....

Are you ready to eat edible bugs? The future of fine-dining may center around insect-based cuisine.

Eating bugs sounds like a rock-bottom financial scenario or maybe a nostalgic scene from The Lion King – but, believe it or not, both the scientific and the gastronomic worlds are abuzz about the future of dining. 

According to a recent report in the American Chemical Society’s Journal of Agricultural Food and Chemistry, iron levels in grasshoppers and crickets are similar to beef’s. Experts are convinced that bugs are a nutritious and sustainable meat alternative. 

Different insect species have varied nutritional benefits. Crickets have far more iron than any other common edible bugs. Grasshoppers and mealworms are rich in calcium, copper, and zinc. Furthermore, when scientists factored in the human digestion process, they found that minerals from these bugs were actually more readily available for digestion than the minerals found in beef.

It’s still a hard sell to get most eaters in Western cultures on board the bug fine-dining train, but over 1,900 insect species are documented as a food source in other parts of the world. 

Bugs are not only a source of protein – they are also rich in iron. Iron deficiency is often the largest problem encountered when following a meatless diet, so, in theory, bugs could be a feasible alternative to higher animals.

Bugs got their name because they were widely assumed to be nothing more than a collective nuisance to humans. As it turns out, they may be more useful than anyone has ever thought.

—

Learn more <a href="http://pubs.acs.org/doi/abs/10.1021/acs.jafc.6b03286" target="_blank" rel="noopener">here</a>.

Are you ready to eat edible bugs?

Are you ready to eat edible bugs? The future of...

Worm metabolism is dictated by gestation conditions, according to a new study.

The study has shed new light on the theory that worm metabolism can be predetermined before birth. Published today in the PLOS Genetics journal, the study focused on the extensively studied nematode worms known as C. elegans. 

The findings indicate worms who were underfed for the first week of their life were better equipped and experienced fewer long-term adverse effects if their mothers had been underfed during pregnancy.

A team led by Dr. L. Ryan Baugh, assistant professor at Duke College, fed one group of pregnant worms a normal diet. The second group was given significantly less nutritious fare. When the offspring were born, they were held without food for eight days and monitored throughout their creepy-crawly lives. The research showed the starved larvae grew slower and were less fertile than the worms who ate normally.

However, the worms whose mothers were given the weight-watchers’ diet while pregnant were significantly less affected than the worms whose mothers were well-fed. Those worms also made a much quicker recovery after the eight-day starvation period. 

“They didn’t completely escape the adverse effects of early life starvation but they were buffered from them,” Baugh said. “These animals are able to anticipate adverse conditions based on their mothers’ experience.”

A study on humans in the early 90s yielded a similar conclusion, called the “thrifty phenotype hypothesis.” It found that pregnant women who don’t get enough nutrition are able to program their offspring with “thrifty” metabolisms which store nutrients efficiently. As a result, the children are better able to operate in food-scarce conditions. 

It is still unclear how this reprogramming works. Malnutrition during pregnancy has been shown to cause mother worms to make bigger, stronger eggs, better fit to handle the conditions. One theory says that hunger slows down ovulation, so the egg has more time to grow prior to fertilization. The mother’s diet during pregnancy might also change the gene expression passed down to the offspring.

We respectfully remind all readers that a healthy, balanced diet is key to a happy, healthy pregnancy.


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Read more over at <a href="https://today.duke.edu/2016/10/underfed-worms-program-their-babies-cope-famine" target="_blank" rel="noopener">Duke Today</a>.

Gestation conditions dictate lifelong worm metabolism

Worm metabolism is dictated by gestation conditions, according to a...

Sea star washed up on a Gulf Coast beach.

Salish Sea sea stars impacted by wasting disease.

According to a study published yesterday in PLOS ONE by scholars from the University of California, Davis, a wasting disease has caused a severe decline in Salish Sea sea star populations off the coast of British Columbia and northern Washington state.

This sea star wasting disease’s effects could have long-term implications for the Salish Sea ecosystem, as the sunflower sea stars have effectively disappeared from the area. The researchers are in discussions with the National Marine Fisheries Service to have the sunflower sea star listed as a "species of concern."

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Read the full paper <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0163190" target="_blank" rel="noopener">here</a>.

Salish Sea stars are in a severe decline

 Salish Sea sea stars impacted by wasting disease. According to...

Scientists are transforming chocolate into a functional food by infusing it with probiotics and prebiotics, aiming to create a treat that satisfies cravings while supporting gut health. 



The challenge lies in maintaining chocolate's beloved texture and flavor while adding health benefits.



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Probiotics - beneficial microbes that balance gut bacteria and aid digestion - are typically fragile and can be destroyed by stomach acid or processing. 



Prebiotics act as food for these microbes, helping them thrive. Together, they form "synbiotics," a powerful health combination.



Researchers Smriti Gaur and Shubhi Singh from India's Jaypee Institute of Information Technology took an innovative approach, using natural prebiotics like corn and honey instead of complex processing methods. 



They created five chocolate varieties: a control and four synbiotic versions containing different combinations of prebiotics, probiotics (Lactobacillus strains), and flavor enhancers (cinnamon or orange).



Laboratory simulations of human digestion showed the probiotics remained viable for over five hours, suggesting they could survive long enough to benefit gut health.



Taste tests were positive, with researchers particularly enjoying the orange-flavored variety, describing it as having "vibrant citrus notes" complementing the "rich cocoa" with a "luxurious" texture.



This research represents just the beginning. With further refinement of strains, textures, and flavors, chocolate could evolve beyond mere indulgence to become a functional food that nourishes while it delights.



The study is published in the journal <a href="https://pubs.acs.org/doi/10.1021/acsfoodscitech.4c00741" target="_blank" rel="noreferrer noopener">ACS Food Science &amp; Technology</a>.

Is chocolate the next nutritional powerhouse?

Scientists are transforming chocolate into a functional food by infusing...

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Today’s Video of the Day from <a href="https://www.igb.illinois.edu/">Carl R. Woese Institute for Genomic Biology</a> reveals how scientists can modify common crops like soybean, rice, and wheat to protect them from heat stress.



“We need to double crop production by 2050 to feed a growing global population, and not only are we not on track to do that, but climate change is further complicating things,” said Amanda Cavanagh, a lecturer at the University of Essex. 



The study is part of Realizing Increased Photosynthetic Efficiency (RIPE), an international research project that aims to develop food crops that turn the sun’s energy into food more efficiently.



“Using an engineering approach we designed multiple alternative metabolic pathways to photorespiration. Testing them in the field showed increases in productivity which led Amanda to significantly move the project forward by showing our engineered plants can withstand pretty extreme temperature stress,” said study co-author and RIPE researcher Paul South.&nbsp;



“As the climate changes and temperature stresses increase the pressure on our global food supply, farmers will need every tool available including engineering approaches like the synthetic biology used here to maintain safe and productive harvests.”



The experts tested plants modified to have more efficient photorespiration to see if they were better adapted to warmer temperatures.&nbsp;



The team found that the engineered plants produced 26 percent more biomass than the wild-type plants exposed to the same temperatures, and had 15 percent less yield loss under the higher temperatures.



Video Credit: Amanda Nguyen/University of Illinois



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Designing crops that can beat the heat

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes the first comprehensive estimate of carbon density in the Saharan, Sahel, and Sudanian zones of Africa. In an effort to measure the amount of carbon stored across these drylands, a team of scientists used high-resolution satellite images and artificial intelligence to map nearly 10 billion individual trees. 



"The high spatial resolution (50 cm) combined with AI and field measurements used in this study is key to improving tree inventories in drylands," said Pierre Hiernaux, a French researcher working for NASA. "The ever-increasing availability of very high-resolution satellite imagery will make it possible to assess carbon pools and their dynamics at the individual tree level on a global scale."



"This study is exceptional because it is pioneering a type of approach that will revolutionize the monitoring of trees and forests on a global scale: in the short term, it will be possible to map the world's trees from the centre of the Amazon to our schoolyards," said <a href="https://www.inrae.fr/en">INRAE</a> researcher Jean-Pierre Wigneron.



"Many fields of application will become much more efficient and accurate, such as tracking carbon stocks, biodiversity, monitoring logging and protection against illegal forest degradation, in near real time.”



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Remote sensing will revolutionize the way we monitor trees

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Lesotho: Africa's "Kingdom in the Sky" Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features northwest Lesotho in South Africa.



According to ESA, Lesotho is the only nation in the world that lies completely above 1,000 m in elevation. The country is famous for its tall mountains and narrow valleys, and is known as Africa's "Kingdom in the Sky."



Out of a population of around two million people, about 80 percent live in rural areas. More than 75 percent of these people are engaged in <a href="https://www.earth.com/news/climate-change-will-have-a-global-impact-on-agriculture/">agriculture</a>, including rainfed cereal production and animal grazing.&nbsp;



ESA reports that the country’s agricultural system faces a growing number of issues, with climate-related vulnerabilities such as drought, floods and extreme temperatures occurring more frequently. 



Diamonds are amongst the minerals found in the mountains. Indeed, Lesotho can truly be called the Kingdom in the Sky. Beautiful, culturally rich, safe, affordable, and easily accessible from Durban and Johannesburg, mountainous Lesotho is a vastly underrated travel destination. the Kingdom of Lesotho (Sotho: 'Muso oa Lesotho) is an enclaved country in southern Africa. It is just over 30,000 km2 (11,583 sq mi) in size and has a population of around 2 million.



Video Credit: ESA&nbsp;&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 



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Lesotho: Africa's "Kingdom in the Sky"

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> features a visual dataset of.methane emissions from wetlands across the globe. Atmospheric methane levels have reached record highs in recent years, and wetlands are a major source of these emissions.&nbsp;



"Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming," says NASA.



"Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands."&nbsp;



According to NASA, understanding methane emissions from wetlands and other natural sources is critically important for scientists and policymakers who are working to combat climate change by reducing emissions from human activities.



Video Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Wetlands are a major source of methane emissions

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> reveals the evolution of the Columbia Glacier in southeastern Alaska. Columbia is among the fastest shrinking glaciers in the world, and the video documents its rapid retreat over the years.&nbsp;



Columbia Glacier is a large, multi-branched calving glacier that flows out of the Chugach Mountains to the Prince William Sound.&nbsp;



According to USGS, Columbia had a long history of stability prior to 1980, with a length 41 miles, and small, short-lived advances or retreats.



In the years since 1980, however, satellite images have captured Columbia’s alarming retreat. By using false-color images, scientists can distinguish between snow and ice, open water, vegetation, and rocky debris on the glacier’s surface.



The series of false-color images featured in today's video were acquired over the span of 35 years. You can see that by 2021, the glacier’s main branch had retreated about 15 miles from its initial position.



The Columbia Glacier has also lost more than 50 percent of its volume, mostly due to calving. <a href="https://www.earth.com/video/nasa-reveals-3d-visual-of-an-atmospheric-river/">NASA</a> reports that while climate change likely started the retreat, mechanical processes kept the disintegration going.



The NASA images are provided by Jesse Allen, Robert Simmon, Joshua Stevens, and Lauren Dauphin using data from Landsat satellites, from the U.S. Geological Survey, and data from MODIS on NASA’s Terra satellite. The structure of Columbia’s moraine played a large role in the stability of the glacier before 1980. 



Like other tidewater glaciers, the Columbia built up a moraine over time, and the mixture of ice and rock functioned like a dam keeping out the sea. It was supported on one end by the shoreline and by the underwater terminal moraine at the other.



Video Credit: NASA Earth Observatory/&nbsp; NASA’s Scientific Visualization Studio



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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The rapid retreat of the Columbia Glacier

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how record-breaking heat expressed itself around the world in 2022.



Scientists have determined that 2022 was the 5th warmest year since 1880. Furthermore, the last nine consecutive years have been the warmest on record.



From devastating floods and wildfires to natural disasters like Hurricane Ian, 2022 showed us yet again how a warming climate affects people across the globe.&nbsp;



"As we look back at 20:22 and years past, we see that each year we better understand the challenges we face and how important it is to meet them," says NASA.



Video/ Image Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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2022 illustrated the consequences of a warming climate

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Satellites reveal how Earth's systems are interconnected Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes Earth’s interconnected systems, and how this network is affected by rising temperatures.&nbsp;



During 2020, average global temperatures matched the hottest year on record. The hurricane season was also record-breaking, with many of the storms intensifying at extraordinary speeds. Hot water in the ocean is fuel for hurricanes. The satellite data shows that it's all one interconnected system showing how Satellites reveal how Earth's systems are interconnected.



According to NASA, dust swept up from Northern Africa plays a major role in the formation of hurricanes, and is also a key source of fertilization in the Amazon rainforest. As a result of<a href="https://www.earth.com/news/seagrass-wasting-disease-is-fueled-by-climate-change/"> climate</a> change, dust plumes are expected to decline, which will have an effect on vegetation far away.&nbsp;



Images from Earth-observing satellites show how the world’s plant life is affected by natural disasters, fires, and deforestation. Satellites also reveal how widespread changes in vegetation impact waterways,&nbsp; the climate, air quality. Satellites communicate by using radio waves to send signals to the antennas on the Earth. "Earth From Space" is a groundbreaking two-hour special that reveals a spectacular new space-based vision of our planet. 



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Satellites reveal how Earth's systems are interconnected

[sendtonews key="JbW4VsY53O-1632195-12187" type="single"] Satellites reveal how Earth's systems are interconnected...

Today’s Video of the Day from the <a href="https://welcome.miami.edu/">University of Miami</a> Rosenstiel School of Marine and Atmospheric Science explores how changes in water temperatures have affected tiger shark habitats and movements in the North Atlantic Ocean. The study reveals that rising temperatures have caused the sharks to shift toward the poles over the past 40 years.



“Tiger shark annual migrations have expanded poleward, paralleling rising water temperatures,” explained study lead author Neil Hammerschlag. “These results have consequences for tiger shark conservation, since shifts in their movements outside of marine protected areas may leave them more vulnerable to commercial fishing.”



The researchers analyzed nine years of tracking data from satellite-tagged tiger sharks, combined with four decades of conventional tag and recapture data provided by National Oceanic and Atmospheric Administration (NOAA) Cooperative Shark Tagging Program.



The experts found that during the last decade of record heat, for every one-degree Celsius increase in water temperatures, tiger sharks migrated further poleward by over 400 kilometers. They also migrated two weeks earlier than usual to waters off the northeastern coast of the United States.



“Given their role as apex predators, these changes to tiger shark movements may alter predator-prey interactions, leading to ecological imbalances, and more frequent encounters with humans,” concluded Professor Hammerschlag.



Video Credit: University of Miami Rosenstiel School of Marine and Atmospheric Science



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Tiger sharks are shifting poleward as temperatures rise

Today’s Video of the Day from the University of Miami...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> is focused on the melt ponds that emerge during the spring and summer on the Greenland Ice Sheet, which is the largest ice mass in the northern hemisphere.



"Melt ponds are vast pools of open water that form on both sea ice and ice sheets and are visible as turquoise-blue pools of water in this Copernicus Sentinel-2 image," says ESA.



"When snow and ice melts atop glaciers, water flows in channels and streams and collects in depressions on the surface. These melt ponds can speed up the melting of the surrounding ice since they greatly reduce the ice’s ability to reflect sunlight."



"This can create a positive feedback where an increasing number of melt ponds absorb more heat which causes ice cover to melt even faster."



According to ESA, Greenland has been hit with a late-season heatwave that began in early September. This caused the type of melt event that usually occurs in the middle of summer.



"In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight," says ESA. "Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change."



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Melt ponds on the Greenland Ice Sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes how Earth is unique in our solar system for its ability to sustain liquid water on its surface. But now, the water cycle is shifting as the climate warms, and scientists must find ways to predict how these changes will affect water availability.



Overall, 96 percent of Earth's water is saltwater, and nearly all of freshwater is found in ice and groundwater. These sources of water are linked as it passes through solid, liquid and gas phases.



In a warmer climate, the water cycle will be transformed. It will be easier for water to evaporate and form clouds, and storms will become more frequent and intense. Some regions will get too much water, while others will be left without enough water. In addition, soil moisture will be lost - which threatens food security.



Scientists are using satellite data from over the last 40 years to track changes that are happening in the water cycle. This will ultimately help us prepare for extreme events and better manage our water resources, according to ESA.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Tracking changes in Earth's water cycle

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard Space Flight Center</a> features images of Saturn from NASA’s Hubble Space Telescope. The photographs capture the start of the mysterious "spoke season" on Saturn - when unexplained features appear on its rings. 



According to NASA, both the cause of the spokes and their seasonal variability have yet to be fully explained by planetary scientists.



"Like Earth, Saturn is tilted on its axis and therefore has four seasons, though because of Saturn's much larger orbit, each season lasts approximately seven Earth years. Equinox occurs when the rings are tilted edge-on to the Sun," explains NASA.



"The spokes disappear when it is near summer or winter solstice on Saturn. (When the Sun appears to reach either its highest or lowest latitude in the northern or southern hemisphere of a planet.) As the autumnal equinox of Saturn's northern hemisphere on May 6, 2025, draws near, the spokes are expected to become increasingly prominent and observable."



Experts believe that the spokes may be a product of the planet's variable magnetic field. When magnetic fields interact with solar wind, an electrically charged environment is created. This phenomenon is visible on Earth as the northern lights.&nbsp;



"Scientists think that the smallest, dust-sized icy ring particles can become charged as well, which temporarily levitates those particles above the rest of the larger icy particles and boulders in the rings," says NASA.



The spokes were first observed in the early 1980s by NASA's Voyager mission. Depending on the angle of the rings, the spokes can appear dark or light.



"Thanks to Hubble's OPAL program, which is building an archive of data on the outer solar system planets, we will have longer dedicated time to study Saturn’s spokes this season than ever before," said NASA senior planetary scientist Amy Simon, head of the Hubble Outer Planet Atmospheres Legacy (OPAL) program.



"Despite years of excellent observations by the Cassini mission, the precise beginning and duration of the spoke season is still unpredictable, rather like predicting the first storm during hurricane season."



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Mysterious "spoke season" captured on Saturn

[sendtonews key="Ccjk8KEMzv-2550719-12187" type="single"] Today's Video of the Day from NASA...

Closeup,Of,Fresh,Green,The,Napier,Bush,Grass,As,Animal

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Today’s Video of the Day from <a href="http://www.ntu.edu.sg/">NTU Singapore</a> reveals that some plants can remove toxic heavy metals from soil.&nbsp;



The researchers analyzed samples of various tropical plant species to test for levels of heavy metals and metalloids. The study showed that there are existing plants with high levels of these contaminants, which means that these species are great candidates for drawing pollutants out of the soil.&nbsp;



Among the plants examined in the study, 12 species had accumulated several types of heavy metals and metalloids. These plants are widely available, including species that are native to Singapore.



“In a small nation like Singapore, land may be repurposed to support new development plans, so it is important that we have a green and sustainable way to remediate land that is contaminated," said Professor Lam Yeng Ming.



"We set out to uncover how to better make use of tropical plants to do phytoremediation and through advanced characterization techniques, we showed how some of these tropical plant species can be an environmentally friendly and literally a 'green' way to remove contaminants in soil."&nbsp;



"Phytoremediation also has benefits of cost effectiveness, simplicity of management, aesthetic advantages, and long-term applicability and sustainability. The strategy prevents erosion and metal leaching by stabilizing or accumulating heavy metals, so that helps reduce the risk of contaminant spread.”



Video Credit: NTU Singapore



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Plants help remove heavy metals from contaminated soil

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes why herbicides are not as effective in killing weeds anymore. In the 20th century, chemical companies developed thousands of herbicides. The most commonly used herbicide was glyphosate, which was introduced in 1974.



Over the past few decades, dozens of species of weeds have evolved resistance to glyphosate. Depending on the site of action, the part of the plant that an herbicide interacts with, weeds may even be resistant to herbicides that have not been developed yet.&nbsp;



With increasing resistance to glyphosate and other herbicides, weeds are - once again - becoming a major concern for farmers.&nbsp;



Video Credit: American Chemical Society&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Weeds are becoming increasingly resistant to herbicides

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Today’s Video of the Day from the <a href="https://www.jpl.nasa.gov/">NASA Jet Propulsion Laboratory</a> (JPL) describes a dust storm on Mars that was nearly twice the size of the United States. As the storm covered the southern hemisphere of the planet, some of NASA’s explorers had to delay their normal activities.



NASA’s Insight lander put itself in a "safe mode" for 11 days to conserve battery power because solar power was disrupted by the dust. The Ingenuity Mars Helicopter postponed flights until conditions improved.



"A fleet of NASA orbiters monitor Martian dust storms like this one and serve as lifelines to Earth by relaying data from the rovers and lander on the ground back to the team. This includes the Mars Reconnaissance Orbiter, MAVEN, and Odyssey," reports JPL.



"Dust storms like this recent one start close to the ground and are spread by wind as they rise – warming the cold Martian atmosphere."



The images in the video were captured by NASA’s Curiosity as the dust rolled in. A fleet of orbiters monitored the dust storm from above, relaying data from Mars’ explorers back to scientists on Earth.



Video &amp; Image Credit: NASA/JPL-Caltech/ASU/MSSS



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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NASA monitors giant dust storms on Mars

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Today's Video of the Day from the <a href="http://www.esa.int/">European Space Agency</a> features Qeshm Island in the Strait of Hormuz. This strait provides the only sea passage from the Persian Gulf to the open ocean.



Qeshm is separated from the Iranian coast by the Clarence Strait, also known as Khuran.&nbsp;The Hara Forest Protected Area is a network of shallow waterways and forest located between the island and the mainland. This protected region is home to sea turtles, snakes, and more than 150 species of migrating birds.



Qeshm is famous for its wide range of&nbsp;ecotourist&nbsp;attractions, such as the&nbsp;Hara marine forests. According to environmentalists, about 1.5 percent of the world birds and 25 percent of Iran's native <a href="https://www.earth.com/news/female-hummingbirds-avoid-sexual-harassment-by-looking-like-males/">birds</a> annually migrate to the forests, which are the first national geo park in Iran.



Tourists are also drawn to the island to see an age-old Portuguese&nbsp;fort, historic mosques, the&nbsp;Seyyed Mozaffar&nbsp;and&nbsp;Bibi Maryam&nbsp;shrines, and the "Valley of Stars."



The average temperature on the island is 81 degress and the region is often hot and humid. From June to August, the island is described as being oppressively hot. The ideal time to visit is during the winter season. 



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Qeshm Island in the Strait of Hormuz

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Inhambane Bay in southeast Mozambique.&nbsp;



"Inhambane Bay is a deep inlet into which the small Mutamba River flows," says ESA. "On one side of the bay lies the historical city of Inhambane, capital of the Inhambane Province, while the sister city of Maxixe, the economic capital of Inhambane, sits across from it. The province is the second largest grower of cashews, after Nampula, and it also produces coconut and citrus fruits."



The beaches of Barra and Tofo are popular with tourists. There are also coral reefs along the long coastline of Inhambane, making it an ideal destination for scuba diving and snorkeling.



"Mozambique’s extensive coastline heightens the country’s vulnerability to tropical cyclones that develop in the Indian Ocean as well as storm surge flooding," says ESA.



"More than half of the population lives in low lying coastal areas, putting communities at risk. Inhambane Bay was dangerously close to where Cyclone Idai made landfall in 2019 causing widespread destruction to the country."



Video/ Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Inhambane Bay in southeast Mozambique

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency </a>&nbsp;features the Kangerlussuaq Glacier, one of the largest tidewater outlet glaciers in Greenland. The glacier is located on the east coast of the Greenland ice sheet.



As human-induced climate change continues to drive up temperatures, global ice loss is accelerating at an alarming rate. ESA reports that, over the past decade alone, 3.5 trillion tons of ice have melted from the Greenland ice sheet. This is enough to cover the UK with meltwater 15 meters deep.



Based on satellite imagery, researchers determined that Kangerlussuaq entered a new phase of rapid retreat and acceleration in 2017. In their study, published in <a href="https://www.frontiersin.org/articles/10.3389/feart.2019.00123/full">Frontiers in Earth Science</a>,&nbsp; the experts report that the glacier's ice front is now at its most retreated position since the early 20th century.



"Given Kangerlussuaq’s previous impacts on both the magnitude and pattern of ice sheet wide mass loss, we predict that its new phase of retreat, acceleration and thinning will markedly enhance the south-east region’s contribution to increasing discharge from the ice sheet," wrote the study authors.&nbsp;&nbsp;



"More broadly, accurate forecasting of the ice sheet’s contribution to sea level rise will require a deeper understanding of, and responses to, these non-linear ice dynamic processes."



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Kangerlussuaq Glacier on the Greenland ice sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the complex relationship between ocean and climate. ESA's Climate Change Initiative will help us understand how oceans influence the climate and how climate change is impacting the oceans.&nbsp;



"Earth’s oceans are huge heat stores, soaking up 93% of the excess heat from human activity over the past 70 years. Ocean currents redistribute heat around the planet, from the Equator to the poles. Where this ocean heat goes influences weather patterns and regional climate," explains ESA.



"As well as absorbing heat, oceans are a natural carbon sink, absorbing a quarter of carbon dioxide emissions from human activity. This has led to the acidification of ocean water, threating marine life."



The amount of heat and carbon dioxide soaked up by the ocean depends on specific variables, including phytoplankton, temperatures, waves, salinity, and ice cover. Satellites can be used to measure these variables from space.



"From their unique vantage point, satellites provide key information for understanding the complexities of our planet and monitoring environmental issues," says ESA.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Ocean heat influences regional climate

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the importance of monitoring the shape of the sea surface, which is constantly changing. These observations have many applications, such as ship routing, <a href="https://www.earth.com/news/the-modem-ocean-is-a-tough-place-for-whales-to-survive/">ocean</a> current forecasting, and debris tracking.



"A project supported by the Discovery element of ESA’s Basic Activities recently investigated a new technique to measure sea surface topography very precisely," reports ESA.



"The technique involves looking at satellite navigation (GNSS) signals that have been reflected off of the sea surface at very low angles. At these so-called grazing angles, waves and surface roughness have very little impact on the reflection process; the sea surface acts as a very smooth mirror."



Estel Cardellach is the principal investigator at the Institute for Space Studies of Catalonia, who first submitted the idea for the project.



“In a mirror-like reflection the phase of the signal can be tracked – it is continuous," said Cardellach. "Different surface heights result in different phase measurements. It gives a very precise measurement of the surface altitude at a few centimetres’ precision.”



The researchers developed a GNSS receiver and set up an experiment in the Balaeric Islands to collect signals from the receiver that were reflected off the sea surface. Ultimately, these signals will provide improved measurements of the shape of the sea surface.



Image/ Video Credit: ESA



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Monitoring the dynamic shape of the sea surface

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