Quantum entanglement is a mind-boggling phenomenon in quantum mechanics that intrigues both scientists and the public alike.



Unlike the predictable nature of classical physics, quantum mechanics thrives on unpredictability, often challenging our everyday perceptions. This is particularly evident in the behavior of entangled particles.



<h2 class="wp-block-heading" id="h-understanding-quantum-entanglement">Understanding quantum entanglement</h2>



In quantum mechanics, particles can exist in multiple states simultaneously, a concept known as superposition. Entanglement elevates this idea: when <a href="https://www.earth.com/news/quantum-entanglement-laws-thermodynamics-follow-entropy-rule/" target="_blank" rel="noreferrer noopener">particles become entangled</a>, their states are interlinked.



A change in one particle's state instantly influences the other, regardless of distance—imagine two distant light bulbs flickering in sync across the cosmos.



Entanglement suggests that information can be shared instantaneously between particles, defying the notion that nothing travels faster than light.



This "<a href="https://www.earth.com/news/quantum-entanglement-spooky-action-at-a-distance-persists-between-top-quarks/" target="_blank" rel="noreferrer noopener">spooky action at a distance</a>," as Albert Einstein famously termed it, prompts profound questions about the nature of space and time.



<h2 class="wp-block-heading" id="h-challenges-of-measurement">Challenges of measurement</h2>



Measurement in quantum mechanics presents unique challenges. Observing one particle in <a href="https://www.earth.com/news/quantum-dance-entangled-photons-wave-functions-captured-real-time/" target="_blank" rel="noreferrer noopener">an entangled pair</a> determines the states of both, leading to critical inquiries: What constitutes a 'measurement,' and how does it influence our understanding of reality?



The complex mathematics underpinning quantum mechanics -- incorporating concepts like Hilbert spaces, wave functions, and operators -- can be intimidating, rendering entanglement less accessible to many.



<h2 class="wp-block-heading" id="h-fascinating-puzzle">Fascinating puzzle</h2>



Simply put, quantum entanglement is just too complicated for most people to fully understand. <a href="https://www.earth.com/news/quantum-tunneling-allow-particles-break-light-speed-barrier/" target="_blank" rel="noreferrer noopener">It defies classical intuitions</a>, involves sophisticated mathematics, and urges us to reevaluate our understanding of reality.



That is, until now. 



Enter Professor Carl Kocher, a pioneer of the study of quantum entanglement. He is currently a member of the <a href="https://quantumfoundry.ucsb.edu/" target="_blank" rel="noreferrer noopener">Quantum Foundry</a> at University of California Santa Barbara and Professor Emeritus at <a href="https://oregonstate.edu/" target="_blank" rel="noreferrer noopener">Oregon State University</a>.



Professor Kocher is the author of a new article in Frontiers in Quantum Science and Technology, explaining his groundbreaking 1964-67 experiments in quantum entanglement and discussing the 'paradox' of quantum entanglement.



In the following guest editorial, <a href="https://www.researchgate.net/profile/Carl-Kocher" target="_blank" rel="noreferrer noopener">Professor Kocher</a> helps us stretch our minds to understand this apparently paradoxical phenomenon.



<h2 class="wp-block-heading" id="h-understanding-quantum-entanglement-0">Understanding quantum entanglement</h2>



My new article, ‘<a href="https://www.frontiersin.org/journals/quantum-science-and-technology/articles/10.3389/frqst.2024.1451239/full" target="_blank" rel="noreferrer noopener">Quantum Entanglement of Optical Photons: The First Experiment, 1964-67</a>’, is intended to convey the spirit of a small research project that reaches into uncharted territory. 



The article breaks with tradition, as it offers a first-person account of the strategy and challenges for the experiment, as well as an interpretation of the final result and its significance. 



In this guest editorial, I will introduce the subject and also attempt to illuminate the question ‘What is a paradox?’



Let’s begin with the gyroscope that I bought when I was eight, from a store that sold novelties and magic tricks. The spinning disk, supported at one end of its shaft, did not fall, but moved slowly around in a horizontal plane. 



This behavior seems mysterious or paradoxical in the context of common experience that excludes gyroscopes, but makes complete sense in the context of Newtonian mechanics, which resolves the paradox by predicting precisely how gyroscopes will behave.



<h2 class="wp-block-heading" id="h-evolution-of-quantum-theory">Evolution of quantum theory</h2>



<a href="https://www.earth.com/news/radical-new-theory-finally-unites-gravity-spacetime-and-the-quantum-realm/" target="_blank" rel="noreferrer noopener">Quantum theory</a>, conceived in the mid-1920s, has been impressively successful in accounting for the properties and interactions of atoms and molecules. 



In 1935, Einstein, Podolsky, and Rosen stirred controversy with a thought experiment in which two particles of common origin move apart, noting that quantum theory predicts correlations in subsequent measurements of their spins.



The correlation may seem quite puzzling, as a measurement on one of the particles appears to influence a subsequent measurement on the other, even if the particles do not interact.



In current terminology, these correlations are an example of entanglement, and the correlation phenomenon is known as the EPR paradox.



The puzzle has become a subject for much discussion and analysis, especially because there was (and is) no known mechanism for measurements to communicate with each other.



<h2 class="wp-block-heading" id="h-disentangling-quantum-entanglement">Disentangling quantum entanglement</h2>



In 1964 I was intrigued by this unfamiliar effect and began to think of a way to actually perform the EPR experiment -- or at least a version of it -- for observing the <a href="https://www.earth.com/news/quantum-entanglement-discovery-is-a-revolutionary-step-forward/" target="_blank" rel="noreferrer noopener">correlation and entanglement</a>. It would be a low-energy experiment that could be set up in a small laboratory.



For the experiment outlined here, the particles of interest are <a href="https://www.earth.com/news/quantum-entanglement-photons-used-to-measure-earth-rotation/" target="_blank" rel="noreferrer noopener">visible-light photons</a>, which are noninteracting, emitted by excited calcium atoms in a two-stage spontaneous emission process. The polarization states of the photons, which are related to their spins, can be measured simply, with ordinary linear polarizers. 



Photomultiplier detectors count the <a href="https://www.earth.com/news/quantum-dance-entangled-photons-wave-functions-captured-real-time/" target="_blank" rel="noreferrer noopener">individual photons</a>, #1 (green) and #2 (violet), and timing circuits enable the identification of photon pairs from the same atom. A rotatable linear polarizer is mounted in front of each detector.



In simplest terms, the experiment involves counting the rate at which photon pairs are detected, as a function of the orientation of the polarizers. A photon pair detected from the same atom is recorded as a “coincidence count.”



<h2 class="wp-block-heading" id="h-theory-and-experiment-agree">Theory and experiment agree</h2>



Quantum theory makes the following predictions:



<ol class="wp-block-list">
<li><a href="https://www.earth.com/news/quantum-computer-photons-create-vortex-when-they-collide/" target="_blank" rel="noreferrer noopener">Each photon</a>, taken separately, has a 50% chance of being transmitted by its polarizer, regardless of its angle of orientation. </li>



<li>If the polarizer axes are parallel, both photons from the same atom can pass through their polarizers and be counted. Coincidence counts will be observed. </li>



<li>If the polarizer axes are perpendicular, it never happens that both photons pass through their polarizers. Therefore, no coincidence counts will be observed.</li>
</ol>



Predictions #1 and #2 are not surprising, as the green and violet beams of light are unpolarized.



Prediction #3, discussed further in my article, is a quantum entanglement effect with no analog in classical (non-quantum) physics. It is especially interesting because it can be tested experimentally. I designed the experiment specifically for this purpose.



The results of the experiment, after nearly three years of effort in the laboratory, clearly demonstrate that coincidence counts are recorded if the polarizer axes are parallel, and that no coincidences are recorded if the polarizers are perpendicular. The agreement between theory and experiment is unequivocal and striking.



<h2 class="wp-block-heading" id="h-so-is-there-a-paradox">So is there a paradox?</h2>



In our brief discussion of the gyroscope, no paradox was acknowledged because Newton’s theory (classical dynamics) fully explains how a gyroscope moves. 



Furthermore, both the theory and the observed gyroscopic behavior are compatible with our life experience and intuitive ability to grasp natural processes in the classical realm.



In the entanglement case, quantum theory accounts for the observed <a href="https://www.earth.com/news/super-photons-fascinating-behavior-in-quantum-realm/" target="_blank" rel="noreferrer noopener">correlation of the photon polarizations</a>. But even when a theory predicts experimental results, a paradox may remain if the intuition cannot reach out to connect with it.



Take another look at predictions #1 and #3 above. If we draw on our experience of life in a non-quantum world, we may notice something very strange when the polarizers are “crossed” at 90 degrees. 



If each photon has a 50% chance of transmission through its polarizer, why don’t we get coincidences 25% of the time? Instead, we observe none at all. 



<h2 class="wp-block-heading" id="h-stretching-the-mind-to-resolve-the-paradox">Stretching the mind to resolve the paradox</h2>



At first consideration, this <a href="https://www.earth.com/news/impossibility-paradox-calculating-incalculable-quantum-realm-particles/" target="_blank" rel="noreferrer noopener">does seem to qualify as a paradox</a>. One possible explanation could involve a missing component of quantum theory - perhaps a causal mechanism that could allow one photon, or one measurement, to communicate with the other. 



However, despite extensive research, no evidence has been found for such a mechanism.



As we do not live in an <a href="https://www.earth.com/news/how-quantum-revolution-will-impact-all-aspects-of-society/" target="_blank" rel="noreferrer noopener">overtly quantum world</a>, classical phenomena may influence our thought processes - even when we venture into the quantum realm. It may therefore remain a challenge to assimilate entanglement into the intuition.



I believe that the paradox can be at least partially resolved when further thought and experience, such as the experiment considered here, ‘stretch the mind’ to more fully embrace entanglement and other quantum phenomena.



I have come to view these aspects of nature as ‘strangely wonderful’.



The full paper and study can we read at <a href="https://www.frontiersin.org/journals/quantum-science-and-technology/articles/10.3389/frqst.2024.1451239/full" target="_blank" rel="noreferrer noopener">Frontiers in Quantum Science and Technology</a>.



-----



Like what you read? <a href="https://www.earth.com/subscribe/" target="_blank" rel="noreferrer noopener">Subscribe to our newsletter</a> for engaging articles, exclusive content, and the latest updates.



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



-----

Quantum entanglement: A simple way to fully grasp this 'impossible' concept

Quantum entanglement is a mind-boggling phenomenon in quantum mechanics that intrigues both scientists and the public alike. Unlike the predictable nature of classical physics, quantum mechanics thrives on unpredictability, often challenging our everyday perceptions. This is particularly evident in the behavior of entangled particles. Understanding quantum entanglement In quantum mechanics, particles can exist in multiple states simultaneously, a concept known as superposition. Entanglement elevates this idea: when particles become entangled, their states are interlinked. A change in one particle's state instantly influences the other, regardless of distance—imagine...

When Christa Savva returned to the Sandy Shoes Beach Resort a day after Hurricane Matthew brushed by Melbourne Beach, Florida, she looked at the beach in front of the pink-flamingo-colored hotel and noticed half the sand dunes had disappeared.
Savva guesses three-quarters of the missing dunes washed into the ocean and the remaining quarter scattered onto the resort's beachfront property, which was undamaged by the hurricane.
"I was like, 'Oh, my goodness!'" Savva, a property manager for the Space-Age-era hotel, said Sunday. "It's crazy to have the dunes gone and all you see is empty space."
The sand dunes on Florida's beaches are the equivalent of tourism gold, and its disappearance over time threatens the state's No. 1 industry. While Hurricane Matthew didn't ravage Florida's coast as a series of storms did a dozen years ago, it collapsed dunes, washing away sand that protected buildings and roads during storms, and will likely require the spending of millions of dollars on beach restoration projects.
In Jacksonville Beach, the top of the dunes collapsed onto the lower part of the dunes, creating 10-foot high cliffs of sand, rather than the usual gentle slopes of the dunes.
Federal, state and local officials respond to beach erosion by depositing new sand in areas where it has disappeared, and the sand dunes act as barriers to infrastructure. Before these projects took off three decades ago, sea walls were often the only thing that stood between water, winds and buildings during storms.
"The good news is a lot of people don't realize our beaches are engineered. It looks natural, but we construct the sand so it's sacrificed during hurricanes and protects roads and structures and potentially human lives," said Jackie Keiser, a Jacksonville-area official with the U.S. Army Corps of Engineers.
While a statewide evaluation of beach erosion has yet to be completed, individual Atlantic-coast counties from south of the Space Coast up to the Georgia border were assessing the lost sand.
A $13.5 million project to replenish Jacksonville-area beaches with 650,000 thousand cubic yards of sand over seven miles was underway before Hurricane Matthew. Keiser said she is certain that same amount of sand was lost from the hurricane and the amount of sand needed for the project will likely double.
Virginia Barker, the natural resources director for Brevard County, the area of Florida often referred to as the Space Coast, said the erosion from Hurricane Matthew appears to be more in the category of Hurricane Sandy in 2012 than a devastating series of hurricanes of 2004 and 2005. After Sandy, 2.4 million cubic yards of sand were needed to replenish 14 miles of Brevard County's shoreline. The replenishment was far smaller than what was required after Hurricane Frances and Hurricane Jeanne made landfall just south of the Space Coast a dozen years ago.
"This is world-famous Cocoa Beach. People come here for the sandy experience," Barker said. "It's tremendously important to our economy. The alternative is to allow erosion and let the sea go up and there will be no sandy beach."
In Georgia, it's too early to tell the extent of beach erosion, but water did get past huge boulders placed along the shore to buffer properties and stop erosion, said Megan Desrosiers, CEO of One Hundred Miles, a Georgia coastal advocacy group.
"The thing about Georgia is, we haven't had a storm like this since the 1880s so it's hard to know how to prepare when no one remembers the last time there was a storm like this," Desrosiers said. "We don't have experience with this type of storm on the Georgia coast, but Matthew was a perfect example of what we will see more of in the future."
Before Hurricane Matthew, more than half of Florida's 663 miles of beaches were considered critically eroded by the state Department of Environmental Protection. The agency defines "critical erosion" as the disappearance of beach or dune to a degree that it affects the environment, development or recreational activities. About half of Florida's 411 miles of beaches deemed to have "critical erosion" are part of a beach replenishment program.
Before the storm, Brevard County had 41 miles of critical erosion, the area around Daytona Beach had almost 20 miles of beach erosion, the area around St. Augustine had almost 14 miles of critical erosion and the area around Jacksonville had more than 10 miles.
In Melbourne Beach, now that half of the dunes are gone in front of the Sandy Shoes, the high tide can lap up to the steps that lead to the hotel's wooden deck overlooking the beach.
"There's still a beach, and everything ... but it's just a lot flatter," Savva said. "High tide is something you're going to have to watch out for now."
---
Follow Mike Schneider on Twitter: <a href="http://twitter.com/mikeschneiderap">http://twitter.com/mikeschneiderap</a> . His work can be found at <a href="http://bigstory.ap.org/content/Mike-Schneider">http://bigstory.ap.org/content/Mike-Schneider</a> .
© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.

Hurricane Matthew destroys protective sand dunes along Florida coast

When Christa Savva returned to the Sandy Shoes Beach Resort...

Washington lawmakers have tried and failed in recent years to make polluters pay for their carbon emissions to fight climate change. Now, voters will get to decide.
An initiative on the November ballot asks voters whether the state should impose the nation's first direct carbon tax on the burning of fossil fuels such as coal and gasoline.
Sponsors say residents have a moral responsibility to curb greenhouse gas emissions, and a carbon tax is the best way to do it. The tax encourages businesses to conserve or switch to clean energy by making fossil fuels more expensive, and it makes the tax system fairer by using the revenues to reduce other taxes, they say.
Businesses say the tax will drive up fuel and energy costs and put Washington companies at a competitive disadvantage.
And in a move that has bewildered some, major environmental and other groups - including those that backed Gov. Jay Inslee's proposal last year to cap emissions and make carbon polluters pay - oppose the initiative. They say it takes the wrong approach.
Yoram Bauman, an economist who founded Carbon Washington, the grassroots group that gathered more than 350,000 signatures to qualify Initiative 732, defended it as great climate and tax policy.
"It does almost everything right for Washington," he said.
Audubon Washington supports it.
"Our members came down on the side of urgency. We don't have time to wait," said Gail Gatton, the group's executive director. "Climate change is happening, and this is our best available option right now to protect birds."
But the Sierra Club, Washington Environmental Council and the advocacy group Front and Centered say the initiative is the wrong carbon-pricing approach and will hurt the state's revenues. Whereas Inslee's pollution fee would have raised money for education, transportation, clean energy and programs to help disadvantaged communities affected by climate change, Initiative 732 provides no such investments, critics say.
"It's not a path that makes sense for our communities," said Rich Stolz, executive director of OneAmerica, which works on social justice issues. Stolz said the initiative ignores climate justice and lacks input from communities of color.
Stolz's group is part of a coalition that worked on an alternative carbon-pricing measure. Last-minute talks between that coalition and I-732 supporters to collaborate on one ballot measure fizzled last year.
The initiative is designed to be revenue neutral, meaning the tax revenue increase from fossil fuels would be mostly offset by decreases in other taxes. In this case, revenues would be returned to people and businesses by cutting the state sales tax by one point, virtually eliminating business taxes for manufacturers and providing rebates for working families, sponsors say.
A state analysis, however, estimates the measure could cost the state about $800 million in lost revenues over the first six fiscal years. Initiative sponsors dispute the state's analysis, saying it double-counted the rebates in the first year.
The carbon tax is modeled after one in the nearby Canadian province of British Columbia. California has a cap-and-trade program, which limits emissions and allows carbon polluters to buy and trade pollution credits. If approved, Washington's carbon tax starts at $15 a ton of carbon emissions in July, goes up to $25 the next year and incrementally increases afterward.
The Washington State Tree Fruit Association, which represents growers, packers and marketers, is among those opposed.
It takes a lot of fuel to grow and transport produce, and the tax will be paid by those in the state, not competitors outside it, said Jon Devaney, the group's president.
"Raising food prices in Washington state will make us less competitive compared to others," he said.
Initiative sponsors say a $25 carbon tax would raise the price of gasoline by about 25 cents per gallon and the price of coal-fired electricity by about 2.5 cents per kilowatt-hour. They say power plants and fuel suppliers likely will pass those costs on to consumers, but that consumers will see price reductions in other things they buy because the sales tax is cut. The tax wouldn't apply to electricity from renewables like hydro, wind or solar power.
The campaign has raised $1.2 million from nearly 1,200 unique donors; more than half of those total contributions are under $200.
The No on 732 campaign sponsored by the Association of Washington Business has raised $300,000 to oppose the tax.
© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.

Washington state will vote on America's first carbon tax in November

Washington lawmakers have tried and failed in recent years to...

<div>
<div class="img-wrapper">Cheap shale gas produced by fracking has driven the decline in coal production in the United States during the last decade, researchers at the Great Lakes Energy Institute at Case Western Reserve University have found.</div>
Power plants, which use 93 percent of the coal produced nationally, have been operating under the same EPA regulations signed into law by President George H.W. Bush in 1990. Proposed new rules since then have all been challenged in court and not implemented until June 2016, when the EPA's restrictions on mercury and other toxic emissions were approved by the U.S. Supreme Court.

Consumption of coal continued to grow under those 1990-era EPA rules until 2008, and then went into steady decline, dropping by 23 percent from 2008 thru 2015.

The data show the drop in those years to be correlated with the shale revolution, as natural gas production increased by a factor of more than 10 and its price dropped in half, the researchers say. And, due to the continuing--and in some cases accelerating--technological and economic advantages of gas over coal, the decline in coal is expected to continue at least decades into the future.

Their study is published in The Electricity Journal.

"Some people attribute the decline in coal-generated electricity to the EPA's air-quality rules, even calling it 'Obama's war on coal,'" said Mingguo Hong, associate professor of electrical engineering and computer science at Case Western Reserve and co-author of the study. "While we can't say that the EPA rules have no impact--as, for example, discouraging the building of new coal power plants because of the expectation that tougher air-quality rules will clear the courts--the data say the EPA rules have not been the driving force."

Hong, co-director of the Electricity Systems Research Lab at Case Western Reserve, and Walter Culver, a founding member of the Great Lakes Energy Institute Advisory Board at the university, say the data show that shale-gas competition is what's been hurting coal as of today. They expect that, as wind and solar sources of electricity continue to improve, they will be tough competitors to coal in the not-distant future.

The authors examined data available from the U.S. Energy Information Administration, academia, specialized energy consultants, and Wall Street analysts and publically available information of the electric utilities and gas industry--in some cases down to the profit and loss statements.

"If you're a power plant operator and you see gas supply is continuing to increase and natural gas can do the job cheaper--by a lot--the decision to switch from coal is pretty easy," Culver said.

The long-term outlook

"As we look toward the future, we see no natural mechanisms that will permit coal to recover," Culver said.

Gas supply continues to grow. Starting in 2009, gas production each year has exceeded U.S. Energy Information Administration (EIA) annual projections. And the proved gas reserves are outpacing production exponentially, the researchers note. Lastly, pipelines out of Appalachia--where the cheapest and most abundant shale gas is found--are expected next year to increase access to gas in that region by 55 percent above recent production.

There is a valid concern that the supply of natural gas will be limited by a recent debilitating drop in prices that has arisen from over-supply, Culver said. In fact, one driller per month has gone bankrupt in 2015 and early 2016.

But after reviewing the profit-and-loss statements of gas drillers, the researchers believe that a point of price stability exists where both the drillers can be profitable enough to keep drilling and the price to power plants--particularly for gas from the Marcellus and Utica shale deposits in Appalachia--will still be far lower than coal.

Some analysts suggest that exports of liquefied natural gas (LNG) will drive down the domestic supply and raise prices. But Hong and Culver say shipping costs, to Asian markets in particular and well-positioned regional competitors, are likely to prevent U.S. LNG from competing easily internationally. That would leave a strong supply here at attractive prices.

Beyond gas price, state regulations and generator technologies have been and will continue to be factors in the loss of coal production, they conclude.

Since 2010, the cost of utility-scale solar power has declined 68 percent and onshore wind 51 percent, making them close to, or already competitive with coal, the researchers say.

Policies in three-quarters of America's states encourage the addition of wind and solar as replacements for coal. As costs have dropped, some states are pushing a faster switch to those renewables.

Because wind and solar fail to provide constant power, fill-in energy sources are needed. Until large-scale batteries or other electricity-storage technologies become more practical, gas is the logical choice over coal to augment the grid, Culver says. Gas plants can be fired up and turned down faster than coal plants, thus lowering costs to consumers and producing less pollution.

Forthcoming EPA air-quality regulations may further disadvantage coal, Hong and Culver say. Burning natural gas, for instance, produces no mercury emissions, half the carbon dioxide of coal and 80 percent less sulfur.

</div>
<div></div>

Study: EPA is not to blame for decline in coal production

Cheap shale gas produced by fracking has driven the decline...

<div>
<div class="img-wrapper">Declining populations of pollinators is a major concern to ecologists because bees, butterflies and other insects play a critical role in supporting healthy ecosystems. Now a new study from urban ecologists at the University of Massachusetts Amherst suggests that when urban and suburban lawns are left untreated with herbicides, they provide a diversity of "spontaneous" flowers such as dandelions and clover that offer nectar and pollen to bees and other pollinators.</div>
Private lawns make up a significant part of urban lands in the United States, an estimated 50 percent of city and suburbs, say Susannah Lerman and co-author Joan Milam, an adjunct research fellow in environmental conservation. They write, "Practices that support nesting and foraging opportunities for bees could have important implications for bee conservation in suburban areas."

Lerman, an adjunct UMass Amherst faculty member who is also with the U.S. Forest Service, says, "We are still surprised at how many bees we found on these untreated lawns."

In this study of lawns in suburban Springfield, Mass., she and Milam found that "spontaneous lawn flowers could be viewed as supplemental floral resources and support pollinators, thereby enhancing the value of urban green spaces." Details appear in the current issue of Annals of the Entomological Society of America.

For this study, supported by the National Science Foundation, the researchers enlisted owners of 17 lawns in suburban Springfield. Between May 2013 and September 2014, the homeowners did not apply chemical pesticides or herbicides to lawns.

"We documented 63 plant species in the lawns, the majority of which were not intentionally planted," the authors report. Lerman and Milam visited each yard six times per year for two years, finding a total of 5,331 individual bees representing 111 species, of which 97 percent were native to North America.

Of particular interest was the discovery of a large population of Lasioglossum illinoense, a widespread sweat bee species and common in its range, but known in Massachusetts only from a single specimen collected in the late 1920s. The population of L. illinoense in Springfield lawns documents the northeastern range limit for this species.

Conserving native bees for their vital pollination services is of national interest, Lerman and Milam point out, and this new information on native bee distribution and abundance is important for making informed conservation and management decisions regarding pollinator conservation.

Overall, one of their main findings, say Lerman and Milam, is that "when lawns are not intensively managed, lawn flowers can serve as wildlife habitat and contribute to networks of urban green spaces."

Further, "developing outreach to homeowners and lawn care companies to encourage, rather than eliminate, lawn flowers such as dandelions and clover and thin grass cover or bare spots could be a key strategy for urban bee conservation programs targeting private yards."


</div>
<div></div>

Scientists: Help save the bees by keeping lawns natural

Declining populations of pollinators is a major concern to ecologists...

Hurricane Matthew maintains strength along Atlantic Coast. In its record-long week as a major hurricane, Matthew has threaded the needle with its track, staying over warm waters that provide fuel and avoiding land that could starve it. That's been a bit of good news for Florida, but if does actually hit land farther up the coast - and that's still a big question mark - that region would pay the price for Florida's good luck.
Here are some questions and answers about Hurricane Matthew:
---
Q: What does Matthew not quite hitting Florida mean for Georgia and the Carolinas?
A: It keeps the danger level higher, meteorologists say, because the close-but-not-quite-over-land track has kept Matthew's eye relatively strong. It's now been a week and counting as a major hurricane.
Matthew has found "one of the most ideal tracks that a hurricane can find to maintain that intensity," said University of Miami tropical meteorology researcher Brian McNoldy.
"It probably would be weaker if it would have gone over land in Florida instead of what it's doing," agreed senior scientist Christopher Davis at the National Center for Atmospheric Research in Boulder, Colorado.
Q: How tight a needle has Matthew threaded?
A: Matthew is traveling up the Atlantic's warm Gulf Stream. A bit to the east, the water is cooler, providing weaker fuel. Just 10-to-30 miles westward is the coast, where the air is drier.
When a storm moves over land from warm water, it is like the ultimate severe diet: Eventually, it starves.
"This is a case that will probably save a lot of the coastal cities from pretty destructive wind, but the hurricane itself will maintain a lot of intensity," McNoldy says.
Just outside the eyewall, the wind speed has dropped dramatically; by noon Friday, no place on Florida had sustained winds that were hurricane force, even though Cape Canaveral had a gust of 107 mph, says former hurricane hunter meteorologist Jeff Masters, meteorology director of Weather Underground.
That makes storm surge more of a problem than winds, at least in Florida, according to McNoldy and Masters.
---
Q: Why is Matthew hugging the coast, but not making landfall?
A: There's no scientific reason meteorologists know of. Hurricanes are guided by atmospheric currents, not ocean flows or the cut of the coastline.
"At this point it's just luck," McNoldy says. "There is no real reason why this whole curve is going the shape of the coastline. It could have gone 20 miles east, 20 miles west."
Even when Matthew passed between Haiti and Cuba, it mostly avoided land, especially mountains that could dramatically choke storms.
"It's quite strange actually," McNoldy says. "The atmosphere doesn't really know about the curvature of the coastline."
---
Q: How unusual for Matthew to stay strong so long?
A: It's not just unusual - it's a record, if you look at it in a certain way.
At more than a week of major hurricane strength, with sustained winds over 110 mph, Matthew beat the old record of six days for storms after Sept. 25, according Phil Klotzbach, meteorology professor at Colorado State University. Klotzbach uses this date - after start of fall - because atmospheric and water conditions are quite different in the later part of hurricane season, making it harder for storms to stay strong.
Matthew has been moving over water several degrees warmer than average, on a track relatively free of higher, weakening winds. These conditions, especially the winds, are likely to change.
---
Q: So will the U.S. continue its "drought" of major hurricane landfalls?
A: It's been nearly 11 years since 2005's Hurricane Wilma, since a major hurricane made landfall in the United States, a record long time. Meteorologists had been thinking Matthew would end it, but now they say there's a good possibility the drought will continue.
South Carolina still has a decent chance of being hit directly, but even then, Matthew could weaken just a bit and slip below major hurricane status, Masters says.
The nearly 11 year drought is an artificial construct, just random chance, Masters says. For example, Superstorm Sandy struck during that time and was devastating, but technically wasn't a major hurricane in terms of wind speed, even if it was major for destruction. And in 2008, Hurricane Ike missed being a major hurricane at landfall by just 5 mph, so if definitions had been slightly different, no one would be talking drought, Masters says.
---
Q: Has anything good come out of Matthew's hugging <a href="https://www.bing.com/search?q=florida&amp;cvid=519823df7dbe481f9c65f735e2dbf1cb&amp;FORM=ANAB01&amp;PC=HCTS">Florida</a>?
A: Most likely yes, says Davis. The National <a href="http://www.earth.com/endangered-species/megalagrion-oceanicum/">Oceanic</a> and Atmospheric Administration planes fly out of western Florida and the proximity has enabled them to make many research trips.
Plus, the storm has been close enough to NOAA radar to provide scientists with good inside-the-action data, Davis says.
"In a sense you can look at this as being a benefit in some ways to hurricane research," Davis says. "A silver lining perhaps."
© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.

Hurricane Matthew maintains strength along Atlantic Coast

Hurricane Matthew maintains strength along Atlantic Coast. In its record-long...

<div class="img-wrapper">Honey bee colonies in the United States have been dying at high rates for over a decade, and agricultural pesticides--including fungicides, herbicides and insecticides--are often implicated as major culprits. Until now, most scientific studies have looked at pesticides one at a time, rather than investigating the effects of multiple real-world pesticide exposures within a colony.</div>
A new study is the first to systematically assess multiple pesticides that accumulate within bee colonies. The researchers found that the number of different pesticides within a colony--regardless of dose--closely correlates with colony death. The results also suggest that some fungicides, often regarded as safe for bees, correlate with high rates of colony deaths. The study appeared online September 15, 2016, in the journal Nature Scientific Reports.

"Our results fly in the face of one of the basic tenets of toxicology: that the dose makes the poison," said Dennis vanEngelsdorp, an assistant professor of entomology at UMD and senior author on the study. "We found that the number of different compounds was highly predictive of colony death, which suggests that the addition of more compounds somehow overwhelms the bees' ability to detoxify themselves."

The researchers followed 91 honey bee colonies, owned by three different migratory commercial beekeepers, for an entire agricultural season. The colonies began their journey in Florida and moved up the East Coast, providing pollination services for different crops along the way. They also spent time in locations meant for honey production, as well as "holding areas" where beekeepers prepare large numbers of colonies for upcoming pollination contracts.

A total of 93 different pesticide compounds found their way into the colonies over the course of the season, accumulating in the wax, in processed pollen known as bee bread and in the bodies of nurse bees. At every stop along the beekeepers' itinerary, the researchers assessed three different parameters within each colony: the total number of pesticides; the total number of "relevant" pesticides (defined as those above a minimum threshold of toxicity); and each colony's "hazard quotient," a measure devised by other researchers to integrate the total hazard posed to each colony by the cumulative toxicity of all pesticides present.

All three measures correlated with a higher probability of colony death or queen failure. In addition, the researchers found between five and 20 different pesticide residues in every sample of bee bread that exceeded a hazard quotient's safety threshold. The highest number of pesticides accumulated in the colonies early on, shortly after beekeepers placed colonies into early season flowering crops like apples and blueberries. Honey production stopovers and holding areas offered the bees some respite from further contamination.

The study results also suggest that some fungicides, which have led to the mortality of honey bee larvae in lab studies, could have toxic effects on colony survival in the field. In the current study, pesticides with a particular mode of action also corresponded to higher colony mortality. For example, the fungicides most closely linked to queen deaths and colony mortality disrupted sterols--compounds that are essential for fungal development and survival.

"We were surprised to find such an abundance of fungicides inside the hives, but it was even more surprising to find that fungicides are linked to imminent colony mortality," said Kirsten Traynor, a postdoctoral researcher in entomology at UMD and lead author on the study. "These compounds have long been thought to be safe for bees. We're seeing them at higher doses than the chemicals beekeepers apply directly to the colonies to control varroa mites. So that is particularly concerning."

The current study borrows a concept from human cancer research: the "exposome," or the sum total of chemicals an organism is exposed to over its lifetime. But instead of looking at individual bees, the researchers assessed each colony as a single "superorganism" that functions as a single, cohesive unit.

Within this framework, the researchers tracked the death of queen bees, which is a life-threatening event for the colony as a whole. In some cases, a colony is able to create a new queen, but if those efforts fail the entire colony will die. In the current study, colonies with very low pesticide contamination in the wax experienced no queen events, while all colonies with high pesticide contamination in the wax lost a queen during the beekeeping season.

"This is a huge problem for beekeepers currently. Not long ago, a queen would typically last up to two years. But now many commercial beekeepers replace the queens in at least half of their colonies every spring in the hopes that this will prevent premature queen deaths," Traynor explained. "Even with such measures, many queens still don't make it through one season."

The research team did not find a significant contribution from neonicotinoid pesticides. These compounds, derived from nicotine, are currently some of the most common pesticides in use globally. Because of their ubiquitous use, neonicotinoids have received significant media attention for their potential role in honey bee declines.

"We just did not find neonicotinoids in the colonies," vanEngelsdorp explained. "There were some trace residues of neonicotinoids in a few samples, but not nearly on par with other compounds. However, it's possible we did not test the right matrix--we did not test nectar, for example--or that the product breaks down faster than others in the collection process or that neonicotinoids are simply not very prevalent when crops are flowering."

Because industrial practices have changed since the researchers collected the data for this study, Traynor and vanEngelsdorp acknowledge that further research could reveal new patterns in the relationship between pesticides and honey bee health. But the current study nonetheless offers some important insights for beekeepers and farmers alike.

"We have to figure out ways to reduce the amount of products that bees are exposed to while still helping farmers produce their crops," vanEngelsdorp said. "This will require careful examination of spray plans, to make sure we only use the products we need, when we need them, in order to reduce the number of products bees are exposed to while pollinating different crops."
###
In addition to Traynor and vanEngelsdorp, study co-authors include Jeffery Pettis (U.S. Department of Agriculture), David Tarpy (North Carolina State University), and Christopher Mullin, James Frazier and Maryann Frazier (Pennsylvania State University).

The research paper, "In-hive Pesticide Exposome: Assessing risks to migratory honey bees from in-hive pesticide contamination in the Eastern United States," Kirsten Traynor, Jeffery Pettis, David Tarpy, Christopher Mullin, James Frazier, Maryann Frazier and Dennis vanEngelsdorp, was published in the online journal Nature Scientific Reports on September 15, 2016.

&nbsp;

Multiple pesticides linked to death of honey bee colonies

Honey bee colonies in the United States have been dying...

<div>
<div class="img-wrapper">As Hurricane Matthew continues to crawl along the southeastern U.S. coast NASA observed the storm's winds, clouds, precipitation and more. Matthew remained a major hurricane on Friday, Oct. 7 at 2 p.m. EDT.</div>
On Oct. 6, NASA's CloudSat passed over the eastern quadrant of Hurricane Matthew at 2:30 p.m. EDT. CloudSat revealed the anvil (thick cirrus cloud cover) with cumulus and cumulonimbus clouds beneath the cirrus. CloudSat found areas of higher reflectivity that included larger water and/or ice droplets throughout the clouds.

The next day, NASA's Soil Moisture Active Passive (SMAP) satellite observatory captured data on Matthew's winds. SMAP observations of hurricane Matthew showed winds up to 132 mph (59 meters per second/212 kph) at 7:52 a.m. EDT (11:52 UTC) on Oct. 7. "SMAP has excellent sensitivity to extreme winds, far beyond that from typical scatterometers," said Alexander Fore, of NASA's Jet Propulsion Laboratory in Pasadena, California. "SMAP is sensitive to these extreme winds due to the use of the L-band passive brightness temperature observation, which has the additional benefit of not being attenuated by rain giving accurate wind speeds regardless of rain conditions."

SMAP will map global soil moisture and detect whether soils are frozen or thawed. The mission will help scientists understand the links between Earth's water, energy and carbon cycles; help reduce uncertainties in predicting weather and climate; and enhance our ability to monitor and predict natural hazards such as floods and droughts.

At 2:30 p.m. EDT a visible image from NOAA's GOES-East satellite showed Matthew's clouds engulfing almost all of Florida, Georgia and the Carolinas. The image was created by the NASA/NOAA GOES Project at NASA's Goddard Space Flight Center, Greenbelt, Maryland.

At that time a Hurricane Warning was in effect for Cocoa Beach to Surf City. A Hurricane Watch is in effect from north of Surf City to Cape Lookout, North Carolina. A Tropical Storm Warning was in effect from Florida's Sebastian Inlet to Cocoa Beach, and north of Surf City to Duck, North Carolina, and the Pamlico and Albemarle Sounds, North Carolina.

At 2 p.m. EDT (1800 UTC) on Oct. 7, Matthew remained a Category 3 Hurricane on the Saffir-Simpson Hurricane Wind Scale. The eye of Hurricane Matthew was located near latitude 29.7 North, longitude 80.7 West. That's about 40 miles (60 km) east-southeast of St. Augustine, Florida.

NOAA's National Hurricane Center (NHC) said Matthew is moving toward the north-northwest near 13 mph (20 km/h), and this general motion is expected to continue today. A turn toward the north is expected tonight or Saturday, Oct. 8. On the forecast track, the center of Matthew will continue to move near or over the coast of northeast Florida and Georgia through tonight, and near or over the coast of South Carolina on Saturday.

Maximum sustained winds are near 115 mph (185 kph) with higher gusts. Matthew is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Although weakening is forecast during the next 48 hours, Matthew is expected to remain a hurricane until it begins to move away from the United States on Sunday.

Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 185 miles (295 km). The latest minimum central pressure reported by an Air Force Hurricane Hunter plane was 947 millibars.

A wind gust to 84 mph (135 kph) was recently reported at Ponte Vedra, and a coastal marine observing station at St. Augustine recently measured a wind gust of 85 mph (137 kph). A tidal gauge at Fernandina Beach, Florida reported a storm surge inundation of 3.11 feet above mean higher high water.

For updated forecasts, please visit the National Hurricane Center website: <a href="http://www.nhc.noaa.gov/" target="_blank" rel="noopener">http://www.nhc.noaa.gov</a>.


</div>
<div></div>

Hurricane Matthew continues to crawl along the Florida coast

As Hurricane Matthew continues to crawl along the southeastern U.S....

<div>Rising levels of noise in the ocean have been identified as a growing concern for the well-being of marine mammals, but other threats such as pollution, climate change, and prey depletion by fisheries may also harm marine mammals and influence their response to additional noise. Current knowledge and data are insufficient to determine what combination of factors cause the greatest concern, says a new report by the National Academies of Sciences, Engineering, and Medicine. The report includes a newly developed conceptual framework model to help federal agencies and research communities explore the potential cumulative effects of human activities on marine mammals.</div>
<div>

Building on previous Academies reports that explored the impact of sound on marine mammals, this report places sound in the context of other stresses that these animals may experience. The report highlights three main challenges in making progress on this issue of cumulative effects: understanding the interaction between different stress-causing agents (stressors), designing studies to better understand the response to more than one stressor, and the difficulty in detecting impacts at the population level.

While experiments are useful in defining the relationship between exposure level (the dosage) and a behavioral or physiological response to one stressor, it is typically impractical to test the interaction among varying dosages of multiple stressors. The conceptual framework recommended in the report is designed to help researchers address discrete aspects of the problem and develop tools to help assess how these various factors affect marine mammals. One tool recommended by the committee is a real-time, centralized system for reporting health data of different populations.

"Current scientific theory and data for individual marine mammals or their population is not enough to predict the total risk from a combination of threats," said Peter L. Tyack, professor of marine mammal biology at the University of Saint Andrews in Scotland and the chair of the committee that conducted the study and wrote the report. "The model we developed in this report provides a way to examine the effects associated with the exposure to a single stressor in the context of the cumulative effect of other stressors in the animal's environment."

Although the impacts from some stressors such as persistent chemical pollutants or ocean climate cannot be readily reduced, others like noise, fisheries, or shipping routes can be managed to reduce their impact. For managers to be able to decide how best to reduce the effects of activities that threaten the mammals, researchers need to develop methods to assess how changes in a combination of stressors can best bring the population to a healthy resilient state. For example, research shows reduced noise associated with lessened commercial shipping after the terrorist attacks on the World Trade Center and Pentagon on Sept. 9, 2001, was associated with reduced stress hormones among the right whales than seen earlier.

The committee also recommended using a framework that assesses the health of individual mammals impacted by an activity, and using changes in health to determine how it could eventually affect populations. For example, North Atlantic right whales, a protected species since the 1930s, still have an extremely low population size, are exposed to noise and chemical pollutants, and also encounter physical injury during their lengthy migration due to entanglement in fishing gear and collisions with shipping vessels. Archived records of their life histories, including photos and drawings, have helped provide information on health variations and locations over time. Researchers have used these data to determine certain causes of decline in the population, such as a dramatic decrease in the health of female whales and low reproduction coinciding with reduced prey availability. These different relationships can be used in the proposed framework to detect early warning signs of risks to populations. The report says federal agencies and other research funders should support efforts to develop case studies such as the right whales and apply this model to other marine mammal populations.

The report recommends building affordable surveillance systems that can detect changes in population parameters such as size or reproductive rate and hence indicate when populations may be at risk due to exposure to stressors. Additionally, the committee proposed a decision tree that helps identify when interactions between stressors should be studied as high priority when considering the effect of a focal stressor on a population.

The study was sponsored by the Office of Naval Research, the National Oceanic and Atmospheric Administration, the Bureau of Ocean Energy Management, and the Marine Mammal Commission. The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide independent, objective analysis and advice to the nation to solve complex problems and inform public policy decisions related to science, technology, and medicine. They operate under an 1863 congressional charter to the National Academy of Sciences, signed by President Lincoln. For more information, visit <a href="http://national-academies.org/" target="_blank" rel="noopener">http://national-academies.org</a>. A roster follows.
###
Contacts:

Riya V. Anandwala, Media Relations Officer
Rebecca Ray, Media Relations Assistant
Office of News and Public Information
202-334-2138; e-mail <a href="mailto:news@nas.edu">news@nas.edu</a>
<a href="https://www.eurekalert.org/pub_releases/2016-10/naos-ate100716.php" target="_blank" rel="noopener">national-academies.org/newsroom</a>national-academies.org/newsroom

Follow us on Twitter <a href="https://twitter.com/theNASEM" target="_blank" rel="noopener">@theNASEM</a>

Copies of Approaches to Understanding the Cumulative Effects of Stressors on Marine Mammals are available at <a href="http://www.nap.edu/" target="_blank" rel="noopener">http://www.nap.edu</a> or by calling 202-334-3313 or 1-800-624-6242. Reporters may obtain a copy from the Office of News and Public Information (contacts listed above).

THE NATIONAL ACADEMIES OF SCIENCES, ENGINEERING, AND MEDICINE

Division on Earth and Life Studies

&nbsp;

</div>
<div></div>

Measuring the impact of human activity on marine mammals

Rising levels of noise in the ocean have been identified...

<div>
<div class="img-wrapper">A new discovery takes plants' deception of their pollinators to a whole new level. Researchers reporting in the journal Current Biology on October 6 found that the ornamental plant popularly known as Giant Ceropegia fools certain freeloading flies into pollinating it by mimicking the scent of honeybees under attack. The flies find that smell attractive because they typically dine on the drippings of honeybees that are in the clutches of a spider or other predatory insect.</div>
"These flowers have a complex morphology, including trapping structures to catch pollinators, temporarily trap, and finally release them," says Stefan Dötterl of the University of Salzburg in Austria. "We show that trap flowers of this plant mimic alarm substances of western honeybees to lure food-stealing freeloader flies as pollinators. Flies are attracted to the flowers, expecting a meal, but instead of finding an attacked honeybee they are temporarily trapped in the non-rewarding flowers and misused as pollinators."

About four to six percent of plants, including the fly-pollinated genus Ceropegia, are pollinated by deceit. They engage in false advertising by appearing to offer a reward, such as pollen or nectar, a mating partner, or an egg-laying site. The new study is among the first to describe a plant that achieves pollination by mimicking the scent of an adult carnivorous animal's dinner.

[caption id="attachment_88708" align="alignleft" width="150"]<img class="size-thumbnail wp-image-88708" src="http://www.earth.com/wp-content/uploads/2016/10/cff2.earth-com-temp.comuploads20161006121055media.eurekalert.orgmultimedia_prodpubweb123648_web-742af40fb4d02267f488b151231fa7ccd79977f6-db3cc7df897101115966080187a60c86301c1407-150x150.jpg" alt="a honeybee eaten by a spider with food stealing kleptoparasitic flies" width="150" height="150" /> a honeybee eaten by a spider[/caption]

Study co-authors Annemarie Heiduk and Ulrich Meve from the University of Bayreuth in Germany got curious when they realized that the flies pollinating Ceropegia sandersonii were Desmometopa. The flies are known as kleptoparasites, commonly feeding on honeybees eaten by spiders.

"We asked ourselves how the flies might find such honeybees," Dötterl says.

When observing a honeybee caught by a spider, they noticed that the bee extrudes its sting and releases a drop of venom. The bees' venom is known to contain volatile alarm pheromones, which serve to call and attract nest mates for help. They wondered whether the plant might be taking advantage of this line of communication among honeybees.

Preliminary experiments showed that honeybees under simulated attack are highly attractive to the flies. In the new study, the researchers show that the floral scent of C. sandersonii is indeed comparable to volatiles released from honeybees when under simulated attack. Some of those shared compounds also elicit a response in the antennae of pollinating Desmometopa flies and are strong attractants for these insects. The evidence is clear: an unusual blend of compounds emitted by C. sandersonii lures kleptoparasitic flies into the plants' trap flowers.

The researchers say they now hope to find out whether other plants, including other species of Ceropegia pollinated by kleptoparasitic flies, use a similar reproductive strategy.
###
This research was funded by the Bavarian Elite Aid Act.

Current Biology, Heiduk et al.: "Ceropegia sandersonii Mimics Attacked Honeybees to Attract Kleptoparasitic Flies for Pollination" <a href="http://www.cell.com/current-biology/fulltext/S0960-9822(16)30879-X" target="_blank" rel="noopener">http://www.cell.com/current-biology/fulltext/S0960-9822(16)30879-X</a>

Current Biology (<a href="https://twitter.com/CurrentBiology">@CurrentBiology</a>), published by Cell Press, is a bimonthly journal that features papers across all areas of biology. Current Biology strives to foster communication across fields of biology, both by publishing important findings of general interest and through highly accessible front matter for non-specialists. Visit: <a href="http://www.cell.com/current-biology" target="_blank" rel="noopener">http://www.cell.com/current-biology</a>. To receive Cell Press media alerts, contact <a href="mailto:press@cell.com">press@cell.com</a>.

</div>

Giant Ceropegia flower mimics the smell of an attacked bee

A new discovery takes plants' deception of their pollinators to...

<div>
<div class="img-wrapper">Tropical Storm Nicole intensified into a hurricane to join Matthew in the Atlantic Ocean, and together they set a record.</div>
On Oct. 6 at 2 p.m. EDT Nicole strengthen into a hurricane. By 11 p.m. EDT Nicole reached maximum intensity with maximum sustained winds near 105 mph. As Hurricane Matthew's winds were near 120 mph at the time Nicole peaked, it marked the latest in the calendar year that two storms in the North Atlantic Ocean have had winds over 105 mph simultaneously, according to Joe Munchak, research scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Since that time, vertical wind shear has been affecting the storm and it weakened. At 5 a.m. EDT on Oct. 7, the National Hurricane Center (NHC) said "Nicole no longer has an eye in infrared satellite imagery, and the cloud pattern suggests that 30 knots of northwesterly shear is beginning to offset the deep convection to the southeast of the center."

A visible image of Hurricane Nicole in the Atlantic Ocean taken by NOAA's GOES-East satellite on Oct. 7 at 7:45 a.m. EDT shows clouds being pushed away from the center by vertical wind shear. NOAA manages the GOES satellites and the NASA/NOAA GOES Project at NASA's Goddard Space Flight Center in Greenbelt, Maryland used the data to create the image.

At 5 a.m. (0900 UTC), the center of Hurricane Nicole was located near 27.3 degrees north latitude and 65.2 degrees west longitude. That's about 345 miles (555 km) south of Bermuda. Nicole is drifting southward, and a slightly faster southward motion is expected tonight and on Saturday, Oct. 8.

NHC noted that Maximum sustained winds have decreased to near 100 mph (155 kph) with higher gusts. Additional weakening is forecast during the next 48 hours. The estimated minimum central pressure is 970 millibars.

Swells associated with Nicole, along with rough surf conditions, will affect Bermuda for the next few days.
###
For forecast updates on Nicole, visit the National Hurricane Center page: <a href="http://www.nhc.noaa.gov/" target="_blank" rel="noopener">http://www.nhc.noaa.gov</a>.

</div>

Hurricane Nicole joins Hurricane Matthew to set a record

Tropical Storm Nicole intensified into a hurricane to join Matthew...

<div>For at least a billion years of the distant past, planet Earth should have been frozen over but wasn't. Scientists thought they knew why, but a new modeling study from the Alternative Earths team of the NASA Astrobiology Institute has fired the lead actor in that long-accepted scenario.</div>
<div>

Humans worry about greenhouse gases, but between 1.8 billion and 800 million years ago, microscopic ocean dwellers really needed them. The sun was 10 to 15 percent dimmer than it is today--too weak to warm the planet on its own. Early Earth required a potent mix of heat-trapping gases to keep the oceans liquid and livable.

For decades, atmospheric scientists cast methane in the leading role. The thinking was that methane, with 34 times the heat-trapping capacity of carbon dioxide, could have reigned supreme for most of the first 3.5 billion years of Earth history, when oxygen was absent initially and little more than a whiff later on. (Nowadays oxygen is one-fifth of the air we breathe, and it destroys methane in a matter of years.)

"A proper accounting of biogeochemical cycles in the oceans reveals that methane has a much more powerful foe than oxygen," said Stephanie Olson, a graduate student at the University of California, Riverside, a member of the Alternative Earths team and lead author of the <a href="http://www.pnas.org/content/early/2016/09/21/1608549113.abstract">new study</a> published September 26 in the Proceedings of the National Academy of Sciences. "You can't get significant methane out of the ocean once there is sulfate."

Sulfate wasn't a factor until oxygen appeared in the atmosphere and triggered oxidative weathering of rocks on land. The breakdown of minerals such as pyrite produces sulfate, which then flows down rivers to the oceans. Less oxygen means less sulfate, but even 1 percent of the modern abundance is sufficient to kill methane, Olson said.

Olson and her Alternative Earths coauthors, Chris Reinhard, an assistant professor of earth and atmospheric sciences at Georgia Tech University, and <a href="http://earthsciences.ucr.edu/lyons.html">Timothy Lyons</a>, a distinguished professor of biogeochemistry at UC Riverside, assert that during the billion years they assessed, sulfate in the ocean limited atmospheric methane to only 1 to 10 parts per million--a tiny fraction of the copious 300 parts per million touted by some previous models.

The fatal flaw of those past climate models and their predictions for atmospheric composition, Olson said, is that they ignore what happens in the oceans, where most methane originates as specialized bacteria decompose organic matter.

Seawater sulfate is a problem for methane in two ways: Sulfate destroys methane directly, which limits how much of the gas can escape the oceans and accumulate in the atmosphere. Sulfate also limits the production of methane. Life can extract more energy by reducing sulfate than it can by making methane, so sulfate consumption dominates over methane production in nearly all marine environments.

The numerical model used in this study calculated sulfate reduction, methane production, and a broad array of other biogeochemical cycles in the ocean for the billion years between 1.8 billion and 800 million years ago. This model, which divides the ocean into nearly 15,000 three-dimensional regions and calculates the cycles for each region, is by far the highest resolution model ever applied to the ancient Earth. By comparison, other biogeochemical models divide the entire ocean into a two-dimensional grid of no more than five regions.

"There really aren't any comparable models," says Reinhard, who was lead author on a <a href="http://www.pnas.org/content/113/32/8933.full">related paper in Proceedings of the National Academy of Sciences</a> that described the fate of oxygen during the same model runs that revealed sulfate's deadly relationship with methane.

Reinhard notes that oxygen dealt methane an additional blow, based on independent evidence published recently by the Alternative Earths team in the journals <a href="http://science.sciencemag.org/content/346/6209/635">Science</a> and <a href="http://geology.gsapubs.org/content/early/2016/06/01/G37787.1.abstract?rss=1">Geology</a>. These papers describe geochemical signatures in the rock record that track extremely low oxygen levels in the atmosphere, perhaps much less than 1 percent of modern values, up until about 800 million years ago, when they spiked dramatically.

Less oxygen seems like a good thing for methane, since they are incompatible gases, but with oxygen at such extremely low levels, another problem arises.

"Free oxygen [O2] in the atmosphere is required to form a protective layer of ozone [O3], which can shield methane from photochemical destruction," Reinhard said. When the researchers ran their model with the lower oxygen estimates, the ozone shield never formed, leaving the modest puffs of methane that escaped the oceans at the mercy of destructive photochemistry.

With methane demoted, scientists face a serious new challenge to determine the greenhouse cocktail that explains our planet's climate and life story, including a billion years devoid of glaciers, Lyons said. Knowing the right combination other warming agents, such as water vapor, nitrous oxide, and carbon dioxide, will also help us assess habitability of the hundreds of billions of other Earth-like planets estimated to reside in our galaxy.

"If we detect methane on an exoplanet, it is one of our best candidates as a biosignature, and methane dominates many conversations in the search for life on Mars," Lyons said. "Yet methane almost certainly would not have been detected by an alien civilization looking at our planet a billion years ago--despite the likelihood of its biological production over most of Earth history."


</div>
<div></div>

How did early Earth stay warm?

For at least a billion years of the distant past,...

The United States is trying to broker an agreement between a host of nations to prohibit unregulated fishing in the international waters of the Arctic Ocean.
Such an agreement would be binding and include more countries than a non-binding agreement that the U.S. entered into with Norway, Denmark, Russia and Canada last year to avoid fishing in the area.
Adm. Robert Papp, the U.S. special representative for the Arctic, said a binding, multinational agreement would prevent fishing in the Arctic high seas before scientists can determine what is sustainable. He said the issue is especially important as Arctic ice melts, making the area more open to potential commercial fishing.
"We don't want people fishing in there until we have the science of what's happening," Papp said. "It's a pre-emptive effort to be able to sustain fisheries into the future."
The U.S. would like to get nations such as China, Korea, Japan and members of the European Union on board with the fishing shutdown, Papp said. He estimated that such an agreement is most likely a couple of years away.
The issue of Arctic Ocean fishing was one of many Arctic issues discussed this week at a diplomatic meeting of the Arctic Council's Senior Arctic Officials in Portland, Maine, that ended Thursday.
Arctic fishing also is on the radar of environmental organizations, such as The Pew Charitable Trusts, which has argued for a binding agreement signed by many nations to shut down fishing. Pew has called the current non-binding agreement "laudable" but also said a broader deal is needed because unregulated fishing could do damage to the Arctic Ocean's ecosystem as waters continue to warm.
The U.S. State Department said last year that the non-binding agreement, signed in Oslo, acknowledged that commercial fishing in the central Arctic Ocean - an area bigger than Alaska and Texas combined - is unlikely to happen soon. But it also acknowledged that the reduction of Arctic sea ice and the limited scope of scientific knowledge about marine life in the area make it necessary to prevent unregulated fishing.
Signers agreed not to fish in the area until international fishing management measures are in place for the Arctic's high seas. More than 200 species of fish thrive in the Arctic, some of which have commercial value, such as the Arctic cod.
© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about ourPrivacy Policy and Terms of Use.

US wants to form an agremeent to ban Arctic Ocean fishing

The United States is trying to broker an agreement between...

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.



<figure class="wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
https://youtu.be/Ug657J67iEo?si=w96YjGMsg939LD_3
</div></figure>



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...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0ynNMYkMKa-2340414-12187" type="single"]</div>



Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Nushagak Bay, a large estuary in southwest Alaska. Nushagak runs mainly north to south and exits in Bristol Bay, a large body of water in the Bering Sea.



"The bay is primarily fed by the Nushagak River, which begins in the Alaska Range and flows southwest approximately 450 km. The bay is also fed by several additional rivers including the Wood, Igushik, Snake and Weary rivers," says ESA.



"The dark colors of the Nushagak River are most likely due to tannins or lignins (chemical substances found in plants). Tannins and lignins from roots, leaves, seeds, bark and soil can leach into the water and give it a brown or even black colour. The sediments then flow southwards where it is mixed with the bluer waters of the bay."



Video/ Image Credit: ESA



---



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

Nushagak Bay in southwest Alaska

[sendtonews key="0ynNMYkMKa-2340414-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="G9bUoxcjr4-2511624-12187" type="single"]</div>



Today's Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> (ACS) reveals that proteins on flu viruses are actually flexible, tilting and waving in a “breath-like” motion. According to the experts, these proteins could be used to better defend against the flu.



"The main antigenic targets of influenza virus are two surface glycoproteins, hemagglutinin (HA) and neuraminidase (NA). Whereas the structural and dynamical properties of both glycoproteins have been studied previously, the understanding of their plasticity in the whole-virion context is fragmented," wrote the researchers.



To investigate, the team conducted detailed simulations of the influenza A H1N1 virion, or the swine flu. The experts concluded that the visualizations show many new vulnerable states of flu viruses, which could improve future vaccines and antiviral drugs.



Video/ Image Credit: American Chemical Society&nbsp;



---



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.

Flu viruses are more flexible than expected

[sendtonews key="G9bUoxcjr4-2511624-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="3upvlAaHgO-2256633-12187" type="single"]</div>



Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Lake Trasimeno, which is located west of Perugia in central Italy. It is the fourth largest lake in the country. While Trasimeno’s water level varies, it has a maximum depth of approximately six meters.&nbsp;



"In this Copernicus Sentinel-2 image, captured on 6 August 2022, the lake’s emerald green colour is likely due to the presence of phytoplankton. Streaks in the water, particularly visible in the west, indicate the presence of soil and sediments which have been stirred up by winds. Dark colored waters in the southern part of the lake indicate a presence of submerged and floating macrophytes (aquatic plants) as well as algae," says ESA.



"Surrounded by hills on three sides, Trasimeno is subject to heavy storms created by winds, especially from the north and west. There are three islets in the lake: Maggiore, Minore and Polvese (the largest). The lake’s shores are sparsely inhabited with only two popular villages: Castiglione del Lago and Passignano sul Trasimeno."



"Italy is experiencing its worst drought in 70 years which has affected drinking water supplies, hydroelectric power and agricultural production. High temperatures, hot winds and lack of rainfall are the main causes of drought in the Umbrian region which saw Lake Trasimeno’s drop 1.3 m, reaching the limit of the hydrometric zero in July 2022."



Video/Image Credit: ESA&nbsp;



---



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

Lake Trasimeno in Central Italy

[sendtonews key="3upvlAaHgO-2256633-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="LvS8v8bp9z-2564889-12187" type="single"]</div>



Today's Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes a new self-powered nanosensor that can instantly detect mercury contamination with the tap of a finger.&nbsp;



The oxidized form of mercury can be harmful when it is ingested through contaminated water or food. This makes it necessary for experts to develop sensors that can quickly and accurately detect the presence of mercury.&nbsp;



Zong-Hong Lin and colleagues have now created a triboelectric nanosensor (TENS) that can detect mercury by simply by touching a sample. According to the researchers, their TENS could serve as the basis for similar devices to safely and remotely monitor other pollutants.



Video Credit: American Chemical Society&nbsp;



---



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.

Detecting mercury contamination with the tap of a finger

[sendtonews key="LvS8v8bp9z-2564889-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="iuA5mpp3jv-1641775-12187" type="single"]</div>



Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Kainji Lake, a reservoir on the Niger River.



In 1968, Kainji Lake was created by the construction of the Kainji Dam. The Niger River, the third longest in Africa, enters the lake in the north.&nbsp;



According to <a href="https://www.earth.com/news/rivers-in-the-american-west-are-a-lifesaving-resource-for-birds/">ESA</a>, the creation of the lake submerged Foge Island and the town of Bussa and permanently flooded other riverine settlements, leaving around 50,000 people displaced.&nbsp;



Large parts of Foge Island are temporarily exposed during low water tides, and the land is often used by migrating fishermen. Kainji Dam is a dam across the Niger River in Niger State of Central Nigeria. 



Wild mammals occur at relatively low densities due to illegal hunting. Lake Kainji has suffered a dramatic decline as a fishery due to the high numbers of artisanal and subsistence fisherfolk using the lake. It has been suggested that a period of closure, together with controlled fishing rights may help improve fish stocks.



Kainji Lake National Park is the oldest of its kind in Nigeria. The park contains three distinct areas: a part of the Kainji Lake, the Borgu Game Reserve to the west of the lake, and the Zugurma Game Reserve to the southeast. The park is home to around 65 mammal species, 350 bird species, and 30 species of reptiles and amphibians. 



Video/ Image Credit: European Space Agency&nbsp;



---



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.

Kainji Lake in north central Nigeria

[sendtonews key="iuA5mpp3jv-1641775-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"]</div>



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



---



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.

Designing crops that can beat the heat

[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"] Today’s Video of the Day from Carl...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="X0f6OHYoI4-2310561-12187" type="single"]</div>



Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> explores the ability of salt to transform the way that foods and beverages taste. Salt is known to cover up undesirable flavors, such as bitterness in coffee or beer, but how exactly does sodium chloride change the taste of other compounds?



One previous study showed that, not only does salt suppress bitterness, but also enhances sweetness and sourness. Another study revealed that bitterness reduction by salt seems to be happening at the tongue receptor level as well as in the brain.&nbsp;



While it is known that salt taste is mediated by the presence of sodium channels in the form of taste buds, experts believe that there is also an unknown receptor responsible for how we taste salt that has not yet been identified.&nbsp;



Video Credit: ACS Reactions



---



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.

How does salt makes things taste better?

[sendtonews key="X0f6OHYoI4-2310561-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="JRaP49ISmm-2357509-12187" type="single"]</div>



Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Santiago, the capital city of Chile. The city is located in the center of the Santiago Metropolitan Region, which has a population of about eight million people.&nbsp;



'The weather of Santiago resembles the Mediterranean climate with dry and warm summers with temperatures reaching up to 35°C (from October to March) and cool and humid winters that can drop to 0°C (from April to September)."



"The city lies in the centre of the country’s central valley around 80 km from the Pacific Ocean to the west and borders Argentina to the east. A tiny part of Argentina is visible in the top-right corner of the image where the mountain crest of the Andes Mountains acts as a divider between the two countries," says ESA.



Video/ Image Credit: ESA



---



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.

Santiago, Chile in South America

[sendtonews key="JRaP49ISmm-2357509-12187" type="single"] Today’s Video of the Day from the...

Spiral,Galaxy,,Illustration,Of,Milky,Way

<div class="wp-block-sendtonews-playerselector">[sendtonews key="e4ZG0Jawp3-2374785-12187" type="single"]</div>



Astronomers at <a href="https://www.jhu.edu/">Johns Hopkins University</a> have created an interactive map of the universe, including the actual position and real colors of 200,000 galaxies. The map allows the public to access data that was previously only available to scientists.



The map was developed using data collected by the Sloan Digital Sky Survey. For over two decades, a telescope in New Mexico was aimed at slightly different locations to capture the night sky.&nbsp;



"Growing up I was very inspired by astronomy pictures, stars, nebulae and galaxies, and now it's our time to create a new type of picture to inspire people," said map creator Brice Ménard, a professor at Johns Hopkins. "Astrophysicists around the world have been analyzing this data for years, leading to thousands of scientific papers and discoveries. But nobody took the time to create a map that is beautiful, scientifically accurate, and accessible to people who are not scientists. Our goal here is to show everybody what the universe really looks like."



"In this map, we are just a speck at the very bottom, just one pixel. And when I say we, I mean our galaxy, the Milky Way which has billions of stars and planets. We are used to seeing astronomical pictures showing one galaxy here, one galaxy there or perhaps a group of galaxies. But what this map shows is a very, very different scale."



"From this speck at the bottom, we are able to map out galaxies across the entire universe, and that says something about the power of science."



The <a href="https://mapoftheuniverse.net/">interactive map</a> is available online, where it can be downloaded for free.



Video Credit: Johns Hopkins&nbsp;



---



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.

Interactive map of the universe includes 200,000 galaxies

[sendtonews key="e4ZG0Jawp3-2374785-12187" type="single"] Astronomers at Johns Hopkins University have created...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="EjmSP20gQK-2593093-12187" type="single"]</div>



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;



---



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.

Remote sensing will revolutionize the way we monitor trees

[sendtonews key="EjmSP20gQK-2593093-12187" type="single"] Today's Video of the Day from NASA...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="qjvhBOBnY8-2426650-12187" type="single"]</div>



Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Dublin, the capital and largest city of Ireland. Beyond its pub culture, Dublin is known as a modern culinary destination and a UNESCO City of Literature.



"Dublin is located near the midpoint of Ireland’s east coast in the province of Leinster. The city, which covers an area of around 115 square kilometers, is bordered by the Dublin Mountains, a low mountain range to the south, and is surrounded by flat farmland to the north and west," says ESA.



"The city straddles the River Liffey, which rises in the Wicklow Mountains and flows around 80 kilometers eastwards through the city of Dublin, in which it is canalised and bordered with quays. It then empties into Dublin Bay, an arm of the Irish Sea."



Dublin has an abundance of green spaces, including one of the largest enclosed public parks in any European capital city. Phoenix Park, which was originally formed as a royal hunting park in the 1660s, includes 707 hectares of green space.



Video Credit: ESA&nbsp;



---



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.

The city of Dublin on Ireland's east coast

[sendtonews key="qjvhBOBnY8-2426650-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="oL4FnPTGCV-2384527-12187" type="single"]</div>



Today's Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the province of Zaragoza in northeast Spain. The image was captured by the Copernicus Sentinel-2 mission.



"Together with the provinces of Huesca and Teruel, Zaragoza formed the old kingdom of Aragon. Its capital, also called Zaragoza (not visible in this image) is home to around half of Aragon’s population," says ESA.



"The Ebro River can be seen winding its way through the province from west to east in this image. Between its source in the Cantabrian Mountains in the northwest and its delta on the Mediterranean coast, the Ebro River is fed by more than 200 tributaries as it flows 910 km across much of northern Spain."



Since rainfall is very scarce in this region, irrigation in the Ebro basin is critically important. In the valleys surrounding the Ebro River, many fields are used for growing crops such as corn, wheat, and barley.



Video/ Image Credit: ESA



---



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.

The province of Zaragoza in northeast Spain

[sendtonews key="oL4FnPTGCV-2384527-12187" type="single"] Today's Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="f8fukm28Vz-2491833-12187" type="single"]</div>



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



---



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.

Wetlands are a major source of methane emissions

[sendtonews key="f8fukm28Vz-2491833-12187" type="single"] Today's Video of the Day from NASA...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0879czfG3k-1785905-12187" type="single"]</div>



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



---



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.

The rapid retreat of the Columbia Glacier

[sendtonews key="0879czfG3k-1785905-12187" type="single"] Today’s Video of the Day from NASA...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="6HyfrAJTBI-1831843-12187" type="single"]</div>



Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features the Pyrenees Mountains, which form a natural boundary between France and Spain in southwest Europe.



The mountain range is 430 kilometers in length. It stretches from the Mediterranean Sea on the east to the Atlantic Ocean on the west.



At an elevation of 3404 meters, Pico de Aneto is the highest mountain peak in the Pyrenees, and the third-highest peak in Spain. Pico de Aneto is located in the Posets-Maladeta Natural Park, which spans more than 82,000 acres.&nbsp;



"Geological studies have revealed that the Pyrenees Mountains have been around for longer than the Alps, with their sediments first deposited in coastal basins during the Paleozoic and Mesozoic eras," reports ESA.



"The entire mountain range formed due to the upwelling of large sedimentary rocks by the collision of the Iberian and the Eurasian plate around 100 to 150 million years ago, followed by intense erosion from ice and water."



The western Pyrenees receive more precipitation due to moisture blowing in from the Atlantic Ocean. The mountain range contains many lakes, several small glaciers, and some of the highest waterfalls in Europe.



Video &amp; Image Credit: ESA



---



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.

The Pyrenees Mountains in southwest Europe

[sendtonews key="6HyfrAJTBI-1831843-12187" type="single"] Today’s Video of the Day from the...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="0dEcERCq61-2283382-12187" type="single"]</div>



Today’s Video of the Day from <a href="https://www.stowers.org/">Stowers Institute for Medical Research</a> describes why experts are studying zebrafish to gain a better understanding of how the immune system responds to injury. Zebrafish have the ability to repair and regenerate organs.



“Organ regeneration offers an exciting opportunity for studying the immune system and to inquire why some species can regenerate organs like the heart or missing limbs while others like humans cannot,” explained Dr. Tatjana Piotrowski.



Zebrafish sensory organ hair cells are an ideal system to investigate the pathways and cell types involved in regeneration since they are easily destroyed with antibiotics and begin regenerating within five hours. This enabled the researchers to identify the exact timing and genetic programs for each anti-inflammatory macrophage activation state.&nbsp;



“Our hypothesis is that human macrophages do not receive the proper chemical activation 'cocktail' to instruct pro-regenerative processes,” said Dr. Nicolas Denans. “Identifying the molecular recipe of macrophage activation in zebrafish may one day enable us to design regenerative immunotherapies in humans.”&nbsp;&nbsp;&nbsp;



“The new evidence is a valuable resource for comparative studies on the genetic programs involved in macrophage-mediated repair and regeneration. In other words, different types of injuries may induce different kinds of inflammatory responses. We want to decipher whether this 'language' is universal or if there are a variety of dialects."



Video Credit: Stowers Institute for Medical Research&nbsp;



---



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.

How the immune system responds to injury

[sendtonews key="0dEcERCq61-2283382-12187" type="single"] Today’s Video of the Day from Stowers...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="3UUsNkFOuS-2487333-12187" type="single"]</div>



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



---



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.

2022 illustrated the consequences of a warming climate

[sendtonews key="3UUsNkFOuS-2487333-12187" type="single"] Today's Video of the Day from NASA...

Earth,Like,Exoplanet,3d,Render

<div class="wp-block-sendtonews-playerselector">[sendtonews key="QIoVYJqRBi-2434608-12187" type="single"]</div>



Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes two exoplanets that are orbiting a star 218 light-years away. A team of researchers led by the University of Montreal has found evidence that these planets are "water worlds."



The experts used data from NASA’s Hubble and Spitzer Space Telescopes. They discovered that exoplanets Kepler-138 c and Kepler-138 could be composed largely of water.



"We previously thought that planets that were a bit larger than Earth were big balls of metal and rock, like scaled-up versions of Earth, and that's why we called them super-Earths," explained study co-author Björn Benneke.&nbsp;



"However, we have now shown that these two planets, Kepler-138 c and d, are quite different in nature and that a big fraction of their entire volume is likely composed of water. It is the best evidence yet for water worlds, a type of planet that was theorized by astronomers to exist for a long time."



Video Credit: NASA Goddard



Image Credit: NASA, ESA, and Leah Hustak (STScI)



---



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.

Two distant planets may be "water worlds"

[sendtonews key="QIoVYJqRBi-2434608-12187" type="single"] Today's Video of the Day from NASA...

<div class="wp-block-sendtonews-playerselector">[sendtonews key="JbW4VsY53O-1632195-12187" type="single"]</div>



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;



---



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.

Satellites reveal how Earth's systems are interconnected

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

News coming your way