The scorching heatwaves we experience, the wildfires that rage across nations, and the invisible carbon dioxide that fills the air are severely impacting our planet.



In 2023, the world saw extreme heatwaves that fueled substantial wildfires and induced severe droughts across the globe. 



What's more, these <a href="https://www.earth.com/news/fast-wildfires-are-gaining-even-more-speed/" target="_blank" rel="noreferrer noopener">adverse conditions</a> significantly weakened the land's ability to absorb atmospheric carbon. 



The result? A notable surge in atmospheric carbon dioxide levels, growing the scale of concern about accelerating climate change.



<h2 class="wp-block-heading" id="h-heat-and-atmospheric-carbon">Heat and atmospheric carbon </h2>



Data from Hawaii's <a href="https://gml.noaa.gov/obop/mlo/aboutus/aboutus.html" target="_blank" rel="noreferrer noopener">Mauna Loa Observatory</a> showed that atmospheric carbon concentrations skyrocketed by an alarming 86% in 2023 compared to 2012. This increase sets a new record high since tracking of these levels began in 1958.



Interestingly, the rise in carbon dioxide levels cannot solely be pointed towards fossil fuel emissions. These, it seems, only rose by roughly 0.6 percent.



So, what's the primary culprit behind the spike in emissions? It's likely due to weakened <a href="https://www.earth.com/news/extreme-fire-risk-has-grown-exponentially-in-a-hotter-climate/" target="_blank" rel="noreferrer noopener">carbon absorption</a> by natural ecosystems.



<h2 class="wp-block-heading" id="h-weakened-carbon-sink">Weakened carbon sink </h2>



An international team of scientists backed by the <a href="https://www.esa.int/Applications/Observing_the_Earth/Extreme_heat_weakens_land_s_power_to_absorb_carbon" target="_blank" rel="noreferrer noopener">ESA</a> Science for Society Near-Realtime Carbon Extremes project - along with the Climate Change Initiative RECCAP-2 project - set out to investigate the root causes of this event.



The experts used global vegetation models and satellite data to expedite a carbon budget report for 2023.



Land typically absorbs about one-third of human-generated carbon dioxide emissions. However, in 2023, this absorption capacity fell to a mere one-fifth of its usual level, marking the weakest performance by land carbon sink in two decades.



<h2 class="wp-block-heading" id="h-extreme-heat-and-carbon-storage-capacity">Extreme heat and carbon storage capacity </h2>



“Our research shows that 30% of this decline was driven by the extreme heat of 2023, which fueled massive <a href="https://www.earth.com/news/ultrafine-particles-in-wildfire-smoke-change-weather-patterns/" target="_blank" rel="noreferrer noopener">wildfires</a> that ravaged vast areas of Canadian forest and triggered severe drought across parts of the Amazon rainforest," said Philippe Ciais, a scientist from France’s Laboratory for Climate and Environmental Sciences.



"These fires and droughts led to substantial vegetation loss, weakening the land ecosystem’s ability to absorb carbon dioxide. This was further compounded by a particularly strong El Niño, which historically reduces the carbon absorption capacity in the Tropics." 



The situation was made worse by a particularly potent El Niño, which historically reduces carbon absorption capacity in the tropics.



<h2 class="wp-block-heading" id="h-carbon-emitted-from-wildfires">Carbon emitted from wildfires</h2>



Widespread wildfires across Canada and droughts in the Amazon in 2023 released nearly the same amount of carbon to the atmosphere as North America's total fossil fuel emissions. 



This finding highlights the severe impact of climate change on natural ecosystems.



The Amazon rainforest, one of the planet's most essential carbon sinks, is showing signs of long-term distress. Some regions of the Amazon that no longer absorb carbon have shifted into net sources of carbon emissions.



<h2 class="wp-block-heading" id="h-earth-s-declining-capacity-to-absorb-carbon">Earth's declining capacity to absorb carbon </h2>



The declining capacity of Earth's land ecosystems to absorb carbon dioxide may signify that these natural carbon sinks are nearing their limits. 



They won't be able to continue to provide the mitigation service of absorbing half of human-induced carbon dioxide emissions.



"Consequently, achieving safe global warming limits will require even more ambitious emission reductions than previously anticipated," Ciais adds.



<h2 class="wp-block-heading" id="h-saving-earth-s-carbon-cycle">Saving Earth's carbon cycle</h2>



The study also highlights that <a href="https://www.earth.com/news/climate-models-underestimate-sea-ice-melt-and-global-warming/" target="_blank" rel="noreferrer noopener">current climate models</a> might be underestimating the pace and impact of extreme events such as droughts and fires on the degradation of these crucial carbon reservoirs.



"Understanding the knock-on effects of climate change on the carbon cycle is imperative, and the two ESA study projects demonstrate the importance of Earth observation in developing methodologies to provide rapid assessment of these impacts globally," said Stephen Plummer, <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a> Earth Observation Applications Scientist.



"These results are particularly alarming, especially considering the difficulty the world is having limiting warming to 1.5°C, as laid out in the Paris Agreement," noted Clement Albergel, ESA’s Acting Head of the Actionable Climate Information Section.



Given these alarming revelations, it's vital that we ask ourselves: how can we contribute to mitigating these effects? Can we consume less, recycle more, and seek out greener alternatives in our daily lives? The need for climate action could not be more urgent.



The study is published in the journal <a href="https://academic.oup.com/nsr/advance-article/doi/10.1093/nsr/nwae367/7831648?login=false" target="_blank" rel="noreferrer noopener">National Science Review</a>.



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Extreme heat of 2023  weakened Earth's carbon storage capacity

The scorching heatwaves we experience, the wildfires that rage across nations, and the invisible carbon dioxide that fills the air are severely impacting our planet. In 2023, the world saw extreme heatwaves that fueled substantial wildfires and induced severe droughts across the globe. What's more, these adverse conditions significantly weakened the land's ability to absorb atmospheric carbon. The result? A notable surge in atmospheric carbon dioxide levels, growing the scale of concern about accelerating climate change. Heat and atmospheric carbon Data from Hawaii's Mauna Loa Observatory showed...

When Donald Trump announced his presidential bid in June of 2015, he pledged to build a “great, great wall” on the southern border and make Mexico pay for it. Mexico may not be paying for it, but Trump is now asking Congress for a budget to start building the border wall. Researchers are evaluating the threats that the wall poses to many species of animals that will suffer from the fragmentation of their habitats. 

Science journalist Lesley Evans Ogden, a reporter for <a href="https://www.aibs.org/bioscience/">Bioscience</a>, has written an article addressing the potential impact that a U.S.-Mexico border wall will have on <a href="https://www.earth.com/news/endangered-status-giraffes/">wildlife</a>. 

"If the wall is completed, it will create a considerable biodiversity conservation challenge--one unlikely to disappear anytime soon," explained Ogden.

There are already 650 miles of steel posts that form a barrier across the Lower Rio Grande Valley in Texas. It is not clear if this hardened border successfully prevents illegal immigration and smuggling, but it is clear is that it has disrupted the natural habitats of many species.

The proposed border wall may prevent migration that is vital to the survival of some species that live along the Mexico border. The threats to many of these local populations urgently need to be considered before the plans for the Mexico wall are put in motion. 

"Local populations blink on and off like Christmas lights," says the University of Arizona's Aaron Flesch, who was interviewed for Ogden’s article. Without the freedom to access their continuous habitats, experts believe some species may disappear forever. 

"Even when there isn't a physical wall or much of a barrier, [border agents] are actively engaged in enforcing the law through patrols," explained David Christianson of University of Arizona. Such patrols, which may alter the behavior of many animals, often consist of off-road trekking "right in the middle of this endangered species habitat," added Christianson. 

Information included in the article by Ogden suggests that extensive border barriers may prove ineffective in preventing humans from crossing the border. Jamie McCallum, a consultant at Transfrontier International Limited, teamed up with scientists from the Zoological Society of London. The team set up cameras to detect motion along the existing steel barrier in order to observe both human and animal activity.

The images revealed the absence of some animals such as pumas, which was expected by the researchers. Human activity at the barrier, however, was not deterred. This suggests that a wall is simply not going to keep humans from crossing the border. 

“I thought it would have at least some kind of trace of an effect, even if it wasn't a statistically significant finding. But it didn't appear to,” said McCallum.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 

Source: <a href="https://www.aibs.org/bioscience/">Bioscience</a>

Photo Credit: Matt Clark/Defenders of Wildlife

Mexico border wall would hurt biodiversity, wouldn’t deter humans

When Donald Trump announced his presidential bid in June of...

Lake Tahoe has long been a popular vacation destination known for its beautiful, crystal clear waters. But sadly, climate change has caused Lake Tahoe to warm earlier in the springtime, resulting in much cloudier waters.

The premature warming has disturbed the natural mixing of deep and shallow water in the lake, causing a significant decrease in visibility.

Researchers began tracking Lake Tahoe’s water clarity in 1968 by dropping a white disk into the water and measuring how deep it could travel while still in sight. At that time, it remained visible more than 102 feet deep in the water. But now, visibility has dropped to an average of 69 feet.

Of course, other climate factors play into water clarity as well. Years where the lake experiences less <a href="https://www.earth.com/news/extreme-heat-and-precipitation-increase-salmonella-infections-2/">precipitation</a> result in clearer water, while stormwater runoff containing soil and other nutrients make the water murkier. But these predictable patterns have been complicated by climate change.

"What we are learning is that climate change isn't just a one-size-fits-all thing,” Geoff Schladow, director of the <a href="http://terc.ucdavis.edu/">UC Davis Tahoe Environmental Research Center</a>, told the AP. "It's not just warmer air temperatures or more extreme winters or droughts. It's a combination of all of these things."

“Climate change is impacting not only Lake Tahoe's water quality, but also the health of its forests and its recreation-based economy,” Joanne Marchetta, executive director of the Tahoe Regional Planning Agency, told the <a href="https://www.ap.org/en-us/">AP</a>.

In the past two decades, the federal, state, and local governments have invested over $1 billion in slowing pollution runoff into the lake. But climate change has proven to be a formidable opponent, having caused the surface temperature of the water to rise faster in the past 4 years than any other time on record.

As the surface temperature increases, the lake separates into three distinct layers instead of mixing. Without the natural mixing process, algae remains at the surface exposed to the sun, allowing it to grow and reduce water clarity.

Luckily, there is some good news.

"The exciting thing is this is confirming that the bottom of the lake — probably 90 percent of the water in the lake — is still crystal clear,” Schladow added.

-

By <a href="mailto:rarnold@earth.com">Rory Arnold</a>, <a href="http://earth.com/staff">Earth.com</a> Staff Writer

Source: <a href="https://www.ap.org/en-us/">Associated Press</a>

Climate change is clouding the clear waters of Lake Tahoe

Lake Tahoe has long been a popular vacation destination known...

The Hermit Thrush songbird produces different sounds based on geography, with differences that can be traced back to the bird’s evolutionary past, a new study found.

The sounds vary across the large portion of <a href="https://www.earth.com/news/horned-dinosaurs-eastern-north-america/">North America</a> where it spends the summer, according to the study by researchers from Nova Scotia's <a href="https://www.dal.ca/">Dalhousie University</a>. The team studied 100 recordings captured between 1951 and 2015.

"Though Hermit Thrushes have a beautiful, well-known song, relatively little is known about their singing behavior," says one the authors, Sean Roach.

The analysis revealed significant differences in song structure across the three major populations--Northern, Western Mountain, and Western Lowland--as well as within them. 

The introductory notes that preface the bird’s songs showed the most striking differences. The Western Lowland Thrush produces higher, more variable introductory notes than their relatives elsewhere, the study said.

Some of the variation likely dates back to isolation of different Hermit Thrushes populations by ice sheets during the Pleistocene era. Differences between the two western groups may relate to body size, with larger birds producing lower-frequency songs.

One group of birds in the Canadian Rockies sang songs that stood out from other members of their subspecies, which Roach and coauthor Leslie Phillmore believe is an adaptation to how sound carries in their open, shrubby habitat.

"The whistle note's relative consistency across large geographical distances may be due to its role in long-distance communication of species or subspecies identity, while the remainder of the song could be under fewer constraints and its variability may carry more information about individual singers," said Heather Williams of <a href="https://www.williams.edu/">Williams College</a>, an expert on song diversity who was not involved in the study.

The research was published in the journal <a href="http://www.americanornithology.org/content/auk-ornithological-advances">The Auk: Ornithological Advances</a>

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="http://www.americanornithology.org/">American Ornithological Society</a>

The Hermit Thrush songbird’s tune varies with geography

The Hermit Thrush songbird produces different sounds based on geography,...

The tiny, uninhabited patch of real estate known as Henderson Island found itself in international news recently. Scientists found that the lonely island in the middle of the vast South Pacific Ocean was home to some 38 million pieces of trash, most of it waste plastic. They also found that the volume is still growing at a rate of about 13,000 items per day.

The reason this three mile by five mile bump in the Pacific has been turned into an accidental landfill is that it sits amidst a vortex of ocean currents that sweeps oceanic <a href="https://www.earth.com/news/cleaning-ocean-plastic-waste-fuel/">trash</a>, such as from passing freighters, onto its modest shores. 

One of the researchers who made the discovery, Jennifer Lavers of Australia’s University of Tasmania, was quoted in an <a href="https://www.ap.org/en-us/">Associated Press</a> article as saying, “We need to drastically rethink our relationship with plastic. It’s something that’s designed to lasts forever, but is only used for a few fleeting moments and then tossed away.”

Staggering figures

How severe is the global problem of  waste plastic? Here are a few unsettling facts from <a href="http://www.ecowatch.com/22-facts-about-plastic-pollution-and-10-things-we-can-do-about-it-1881885971.html">EcoWatch</a>:
<ul>
 	<li style="font-weight: 400;">Over the last ten years we’ve produced more plastic than we did during the entire 20th century.</li>
 	<li style="font-weight: 400;">Americans throw away 35 billion plastic water bottles every year.</li>
 	<li style="font-weight: 400;">Enough plastic is tossed each year to circle the globe four times.</li>
 	<li style="font-weight: 400;">Our oceans contain an average of 46,000 pieces of plastic per mile.</li>
 	<li style="font-weight: 400;">The Great Pacific Garbage Patch, off the coast of California, is the largest ocean garbage site in the world. It’s a floating mass of plastic that’s twice the size of Texas, with plastic pieces outnumbering sea life six to one.</li>
 	<li style="font-weight: 400;">It takes 500 to 1,000 years for plastic to degrade, so virtually every piece of plastic ever made still exists. (All except that which was incinerated, yet another environmental hazard.)</li>
</ul>
A wet problem

There’s wet waste and then there’s dry waste, and the problem is that much of plastic scrap is wet. That came up in an <a href="http://earth.com">Earth.com</a> interview with Doug Woodring, the founder of the <a href="http://www.plasticityforum.com/">Plasticity Forum</a>, a sort of plastics waste environmental think tank. He also founded the <a href="http://www.oceanrecov.org/">Ocean Recovery Alliance</a>.

“The sorting and recycling recovery system is not fit for this product,” he said.

That’s because those who wish to recycle plastic have to, in Woodring’s words, “deconstruct the omelet.” What that means is that, unlike relatively clean recyclable metal, glass and paper, waste plastic is often enmeshed with rotting food scraps or sticky beverages. First you must separate it from and wash it clean of garbage, grease and foulness you don’t even want to contemplate. It’s just not worth it, even to those who recycle for the financial benefit. At least not in industrialized nations.

“In the Third World, they might be interested in recycling for profit, but there are technology barriers,” said Woodring. 

It’s the absence of even such low-tech tools as plastic balers creating obstacles to recovery efforts here. 

“You’re shipping air in your truck if you don’t have a baler,” said Woodring. 

Plastic bottles and containers consist of thin recyclable shells, but a lot of air-filled volume. You have to carry both but you’re only going to be paid for that thin shell. In other words, the waste takes up a lot of room in a truck bed, but doesn’t consist of a lot of recoverable weight per unit. A simple baler could crush the plastic into more  easily transportable bales of recyclable content, but such technology is not readily available in poorer nations.

“There’s no easy fix,” said Woodring. “I believe plastic waste is one of the most complex issues for the environment today.We have to be adults about this. We’re not going to get rid of plastic trash, but we can look for ways to better address the problem.”

<a href="http://www.plasticityforum.com/">The Plasticity Forum</a> brings together the environmentally minded from the corporate world, scientists, packaging designers, recyclers and entrepreneurs working on solutions. While there’s no single-source solution that will solve all of the world’s plastics waste problems, Woodring feels that we’re getting closer on a lot of fronts.

“In Taiwan, they have a tax (on plastics) and a very high recoverable rate,” he said of one possible response. 

Think about it. Aluminum cans and bottles sold with deposits rarely get trashed, simply because there’s a bounty placed on their return. If you won’t recycle your trash, someone else will if there’s enough cash incentive.

Environmentally conscious innovators are continually working on reduced packaging concepts and toward the development of plastic-alternative containers that are “edible, dissolvable or made out of algae,” said Woodring. 

There are also efforts being made to liquify plastics onsite, such as at hospitals, curtailing the need to ship unsafe biomedical waste.

Not all of these and other concepts and developments are at the stage of major commercialization, but they’re examples of technologies hopefully on the horizon. 

And finally, Woodring advocates the Ocean Recovery Alliance’s Global Alert, an in-development “citizen tool” mobile app that can be used to alert authorities to the presence of floating trash waste plastic on their waterways and coastlines. <a href="http://www.oceanrecov.org/global-ocean-alert-system/solution.html">Learn more here</a>.

How many more Henderson Islands are there out there? How much larger is the Great Pacific Garbage Patch destined to get? Or will we, as a society, put our intellectual muscle to the problem and come up with workable solutions that clean up our land, our landfills and our oceans? 

--

Original Feature by <a href="mailto:DSearls@earth.com">David Searls</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Earth.com Exclusive: The world is swimming in waste plastic

The tiny, uninhabited patch of real estate known as Henderson...

Habitat fragmentation occurs as a result of natural causes such as fire and climate change, and also due to human activity such as agriculture and rural development. This separation of territories reduces biodiversity and disrupts ecosystems. A new study reveals that <a href="https://www.earth.com/news/yellowstone-wolves-hunting-bison/">wolves</a> and other top predators are at a major disadvantage due to habitat fragmentation, and are losing control of smaller predators.

The study, appearing today in Nature Communications, evaluated the top predators on three different continents. The research team analyzed the relationships of these predators and the smaller predators they compete with for resources. The results showed the top predators on all of the continents began losing control over the smaller predators as their ranges were fragmented. 

Aaron Wirsing is an associate professor at the <a href="https://www.washington.edu/">University of Washington</a>'s School of Environmental and Forest Sciences and co-author of the study.

"Our paper suggests it will require managing for top predator persistence across large landscapes, rather than just in protected areas, in order to restore natural predator-predator interactions," said Wirsing.

Gray wolves historically lived in sprawling, continuous habitats of North America, particularly in western regions of the United States and Canada. Coyotes were scarce in these areas which were dominated by wolves. Over time, rural development divided the wolf populations and their control over coyotes was compromised. The numbers of coyotes in these areas has increased significantly.

The research team also analyzed the relationship between gray wolves and golden jackals in Europe, as well as the connection between dingoes and red foxes in Australia. The results here were the same as in America. As the ranges of the top predators were divided into smaller, more isolated territories, the numbers of the smaller predators surged.

"This research shows that apex predators like dingoes and wolves need large, continuous territories in order to effectively control the balance of their ecosystems," said lead author Thomas Newsome of Deakin University and the University of Sydney in Australia. "Humans need a greater tolerance of apex predators if we want to enjoy the environmental benefits they can provide."

The only areas in North America where wolves still have territories large enough to thrive are in northern Canada and some parts of Alaska. As a result of successful conservation efforts, wolf populations are on the rise in areas such as Yellowstone National Park and the northern Rockies. However, their presence is too isolated in these regions to regain control of coyotes and smaller predators.

The authors of the study suggest conservation efforts should be approached in a more effective manner. They believe that connecting landscapes and blending populations together is the best way to allow top predators “to play their historical roles.”

The researchers mapped the historical ranges of the top predators and small predators to see where they overlapped. They confirmed that the top predators such as wolves and dingoes were only able to control their smaller counterparts when they existed in large numbers on vast territories.

The disruption of wolves’ habitats is not the only reason coyotes are appearing all over North America. Coyotes can live anywhere, and have even been spotted in cities such as Chicago.

"Coyotes have essentially hitched a ride with people," Wirsing said. "Not only do we subsidize coyotes, but we also helped them by wiping out their predators."

The researchers plan to expand upon this study by evaluating the other species of animals that are in direct competition with each other. 

"It will be interesting to see the influence of large predators on smaller predators in other parts of the world, especially the role of the big cats such as jaguars, leopards, lions and tigers," said co-author William Ripple of Oregon State University.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 

Source: <a href="https://www.washington.edu/">University of Washington</a>

Habitat fragmentation disrupting the dominance of top predators

Habitat fragmentation occurs as a result of natural causes such...

Weather and climate patterns are so complex that they cannot be predicted with absolute certainty. Spring weather is arriving earlier every year, but that does not mean the timing of the last frost will cooperate. Researchers from the <a href="https://www.utah.edu/">University of Utah</a> and the <a href="https://www.usgs.gov/">U.S. Geological Survey</a> set out to determine the underlying causes of frost timing so that it can be more accurately forecasted. 

The frost-free season in North America has expanded by 10 days over the last century. The timing of frost is driven by many factors, and the researchers wanted to establish the power of each one. 

Court Strong is an Atmospheric Science professor at the University of Utah and co-author of the study.

"The frost-free season has been lengthening over the past century, and now we understand the changes in atmospheric circulation that are extremely strong in frost timing, even stronger than global warming," explained Strong. 

The researchers analyzed the impacts of <a href="https://www.earth.com/news/slow-global-warming-health/">global warming</a> and atmospheric circulation patterns on the expanding frost-free season. They divided the United States into four regions to more accurately examine small-scale circulation patterns. The team investigated how the timing of frost varied in these regions by using weather data from the last 93 years.

The study, published in Nature Communications, reveals that between three and five of the additional frost-free days can be attributed to atmospheric circulation patterns. Another three of these days are a result of global warming. Cloud coverage and other factors are responsible for the remaining days. 

While the findings of this study show that atmospheric circulation patterns have the most influence on frost timing, the scientists established that circulation itself is strongly affected by warming temperatures.

"We also found evidence that these circulation patterns themselves have been altered by global warming, especially in the Western U.S. and the Northwest," Strong said. "Warming is an important part of this narrative despite this finding that circulation is a stronger driver historically."

The researchers plan to evaluate climate models in an effort to find ways to improve their ability to capture the causes of frost timing. More realistic climate models will lead to more accurate predictions of frost timing in the future. 

"The year-to year variability in climate is controlled by these changes in atmospheric circulation," McCabe explained. "On top of that you have the warming trend. If you don't get these patterns right then the simulations are going to have a lot of uncertainty in them."

[caption id="attachment_450755" align="aligncenter" width="300"]<a href="https://www.earth.com/wp-content/uploads/2017/05/141093.png"><img class="size-medium wp-image-450755" src="https://www.earth.com/wp-content/uploads/2017/05/141093-300x92.png" alt="" width="300" height="92" /></a> Image Credit: Court Strong/University of Utah[/caption]

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 

Source: <a href="https://www.utah.edu/">University of Utah</a>

Image Credit: Courtesy of Court Strong/University of Utah

How global warming is impacting the timing of frost

Weather and climate patterns are so complex that they cannot...

Deep portions of Earth's mantle may be as hot now as they were more than 2.5 billion years ago, a new study found.

Researchers studied a set of rocks from the 90 million-year-old Tortugal Suite in Costa Rica and found magnesium concentrations as high as those in “komatiites” from The Archean Eon 2.5 to 4 billion years ago.

“Komatiites are basically superhot versions of Hawaiian-style <a href="https://www.earth.com/image/lava-flow-from-the-kilauea-volcano-in-hawaii/">lava flows</a>," said Esteban Gazel, <a href="https://www.vt.edu/">Virginia Tech</a> Assistant Professor of Geosciences, who led the study. "You can imagine a Hawaiian lava flow, only komatiites were so hot that they glowed white instead of red, and they flowed on a planetary surface with very different atmospheric conditions, more similar to Venus than the planet we live on today."

The study suggests that Earth may still be capable of producing komatiite-like melts. Tortugal lavas most likely originated from the hot core of the Galapagos mantle plume that started producing melts nearly 90 million years ago and has remained active ever since, the study said.

"What is really fascinating about this study is that we show that the planet is still capable of producing lavas as hot as during Archean time period," Gazel said. "Based on our results from Tortugal lavas, we think that mantle plumes are 'tapping' a deep, hot region of the mantle that hasn't cooled very much since the Archean. We think that this region is probably being sustained by heat from the crystallizing core of the planet."

Although the Tortugal Suite was discovered and documented more than 20 years ago, “It wasn't until now that we have the technology and experimental support to better understand the global implications of this location,” said Virginia Tech doctoral student Jarek Trela, first author of the study.

The new data, “offers tremendous opportunity to answer key questions regarding the accretion of the Earth, its thermal evolution, and the geochemical messages that mantle plumes bring to the surface of the planet,” Gazel added.

The study is published in the journal <a href="http://www.nature.com/ngeo/">Nature Geoscience</a>.

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="https://www.vt.edu/">Virginia Tech</a>

Image Credit: Professor Claude Herzberg of Rutgers University

Deep Earth may now be as hot as billions of years ago

Deep portions of Earth's mantle may be as hot now...

Coastal flooding will double in frequency over coming decades even with moderate amounts of sea-level rise, a new study says.

With only four to eight inches of sea level rise expected between now and 2050, coastal flooding will more than double, according to the study by from scientists from the <a href="https://www.usgs.gov/">U.S. Geological Survey</a> (USGS), the <a href="http://www.uic.edu/">University of Illinois at Chicago</a> and the <a href="http://www.hawaii.edu/">University of Hawaii</a>.

In most coastal regions, the amount of <a href="https://www.earth.com/news/rising-sea-levels-inland/">sea level</a> rise occurring in the coming decades is small, yet even gradual sea level rise can rapidly increase the frequency and severity of coastal flooding, according to the new study.

Previous studies of flooding caused by sea level rise focused on tide gauges and did not consider elevated water levels from waves leading to an underestimation of potential impact.

“Using models rather than individual tide gauges provides a comprehensive picture of the widespread vulnerability rather than at sparse points where observed data exist,” said lead author of the study, Sean Vitousek, who was a post-doctoral fellow at the USGS when he began this study. Vitousek is now a professor in the Department of Civil &amp; Materials Engineering at the University of Illinois at Chicago.

Tropical regions will see the greatest increase in flooding, according to the study.

The economies of in low-lying Pacific island nations will be damaged, along with many of the world's largest populated low-lying deltas (such as the Ganges, Indus, Yangtze, Mekong and Irrawaddy Rivers), the study found.

“In the Tropics, today’s 50-year water level event will occur every 5 years with just 10 cm of sea level rise,” said USGS geologist and study coauthor, Patrick Barnard.

Most tropical atoll islands are on average only 1-2 meters above present sea level, the study said.

“And even in the high tropical islands such as Hawaii, Guam, American Samoa, U.S. Virgin Islands, Indonesia, and others, the majority of the population and critical infrastructure is located on a narrow coastal fringe at low elevations (1-2 m above present sea level) and thus susceptible to this increased flood frequency,” said USGS geologist and coauthor, Curt Storlazzi.

The study, published in the journal <a href="http://www.nature.com/srep/">Nature Scientific Reports</a>, can help government climate adaptation efforts in Hawaii and other U.S. affiliated Pacific islands, said coauthor Chip Fletcher, Associate Dean and Professor at the School of Ocean and Earth Science and Technology at the University of Hawaii.

--

By: <a href="mailto:dbeasley@earth.com">David Beasley, </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="https://www.usgs.gov/">U.S. Geological Survey</a>

Rising sea levels will double coastal flooding

Coastal flooding will double in frequency over coming decades even...

Having trouble getting a good night’s sleep? The culprit could be air pollution, according to a new study.

Researchers who had studied the effects of air pollution on heart and lung health wondered whether it could also affect sleep. 

"We thought an effect was likely given that air pollution causes upper airway irritation, swelling and congestion, and may also affect the central nervous system and brain areas that control breathing patterns and sleep,” said lead author Dr. Martha E. Billings of the <a href="https://www.washington.edu/">University of Washington</a>.

So they analyzed the sleep data of more than 1,800 participants in a sleep study run by MESA – the <a href="https://www.mesa-nhlbi.org/">Multi-Ethnic Study of Atherosclerosis</a>. Study subjects had an average age of 68 and were divided into quarters ranging from lowest to highest air pollution at their home locations.

Researchers looked at traffic-related pollutants, particularly nitrous dioxide, and particulate matter such as soot, smoke and pollen, at various points in time during the sleep studies.

Then, they used measurements of movement during sleep to track participants’ “sleep efficiency” – the amount of time they actually spend asleep while in bed.

What they found was that sleepers exposed to pollution were unlikely to actually get a good night’s sleep. 

Those exposed to nitrous dioxide while they slept were 60 percent more likely to have low sleep efficiency. Particulate matter gave sleepers a 50 percent chance of lower sleep efficiency.

"These new findings indicate the possibility that commonly experienced levels of air pollution not only affect heart and lung disease, but also sleep quality. Improving air quality may be one way to enhance sleep health and perhaps reduce health disparities," Billings said.

More research is needed, the team of scientists said. Their study looked at the effects of chronic exposure to pollution, not short-term, acute sleep disruptions. The study also didn’t look into whether traffic noise could be altering sleep efficiency as well.

The research was presented at the <a href="http://www.thoracic.org/">American Thoracic Society’s</a> ATS 2017 International Conference. It was sponsored by the <a href="https://www.nhlbi.nih.gov/">National Heart Lung and Blood Institute</a> of the <a href="https://www.nih.gov/">National Institutes of Health</a>.

—

By <a href="mailto:kcathey@earth.com">Kyla Cathey</a>, <a href="http://earth.com/staff">Earth.com</a> Staff Writer

Could air pollution be robbing you of a good night's sleep?

Having trouble getting a good night’s sleep? The culprit could...

The Svalbard Global Seed Vault started life as an abandoned coal mine a little more than 800 miles from the North Pole. In 1984, it found new live as a secure seed bank. 

Owned and operated by the Norwegian government, the coal mine has been converted into a top of the line facility holding more than 10,000 seed samples from all over the world. 

The concept behind the $9 million vault? To protect those seeds, whether it be from a global disaster like a nuclear war or simply as “backup” in case of accidents at other seed banks around the world.


But the <a href="https://www.croptrust.org/our-work/svalbard-global-seed-vault/">Global Seed Vault</a> has been breached by floodwaters, and scientists say global warming is to blame.

One trait that drew the Norwegian government to the vault’s current location was a thick layer of permafrost. That permafrost was supposed to add an extra layer of protection to keep the seeds frozen until and unless they were needed.

Instead, high temperatures and late rainfall in the Arctic caused the permafrost to melt and flood the vault’s entryway. Fortunately, the water froze once it entered the access tunnel and was removed.

“After 9 years of operation, Svalbard Global Seed Vault is facing technical improvements in connection with water intrusion in the outer part of the access tunnel because the permafrost has not established itself as projected,” the vault’s administrators said in a <a href="https://www.croptrust.org/press-release/press-statement-seed-vault/">press release</a>. 

Officials were quick to provide reassurance that the seeds stored by the vault are safe.

“The seeds in the seed vault have never been threatened and will remain safe during implementation of the measures,” the press release stated.

However, the melting permafrost is just one danger of climate change at the Global Seed Vault, and officials have taken steps to protect against future issues. 

For example, pumps within the seed vault keep water out, but new drainage ditches and a waterproof wall will help to keep water away from the vault and protect the seeds if another flood occurs. Officials are also considering a new access tunnel to the vault.

The goal is to make the Global Seed Vault “self-sufficient” – able to run with minimal maintenance from humans.

“The effect of the measures will be continuously assessed in the coming years. If they are not sufficient, further and more extensive measures will be implemented,” the press release said.

—

By Kyla Cathey, Earth.com staff writer

Image Source: Bjoertvedt, <a href="https://commons.wikimedia.org/">Wikimedia Commons</a>

Svalbard Global Seed Vault flooded by melting permafrost

The Svalbard Global Seed Vault started life as an abandoned...

Japan and China have successfully extracted a frozen fossil fuel called “combustible ice” from the seafloor off their coastlines, moving commercial development of the material closer to reality.

The official Chinese news agency Xinhua reported that the fossil fuel was successfully mined by a drilling rig operating in the <a href="https://www.earth.com/news/tropical-storm-aere-drifting-in-the-south-china-sea/">South China Sea</a> on Thursday. Chinese Minister of Land and Resources Jiang Daming declared the event a breakthrough moment for a potential  "global energy revolution."

Two weeks earlier, a drilling crew in Japan reported a similar successful operation off the Shima Peninsula.

However, experts warned that large-scale production could be many years away - and if not done properly could flood the atmosphere with climate-changing greenhouse gases.

Methane hydrate offers Japan the chance to reduce its reliance on imported fuels. It could also serve as a cleaner substitute for coal-burning power plants and steel factories China that have polluted much of the country with smog.

The South China Sea has become a focal point of regional political tensions as China has claimed huge swaths of disputed territory as its own. Previous sea oil exploration efforts by China met resistance, especially from Vietnam, but its methane hydrate operation was described as being outside the most hotly contested areas.

Methane hydrate has been found beneath seafloors and buried inside Arctic permafrost and beneath Antarctic ice. The United States and India are also researching technologies to capture the fuel.

Estimates of worldwide reserves range from 280 trillion cubic meters (10,000 trillion cubic feet) up to 2,800 trillion cubic meters (100,000 trillion cubic feet), according to the <a href="https://www.eia.gov/">U.S. Energy Information Administration</a>. 

By comparison, total worldwide production of natural gas was 3.5 billion cubic meters (124 billion cubic feet) in 2015, the most recent year available.

Methane hydrate reserves could meet global gas demands for 80 to 800 years at current consumption rates.

For decades, however, private and state-owned energy companies have been unable to extract the fuel at a profit. Extraction techniques, which can use large amounts of water or carbon dioxide, are expensive.

The industry consensus is that commercial development won't happen until at least 2030. Smaller scale output could happen as early as 2020, said Tim Collett, a scientist with the U.S. Geological Survey.

"The path to understanding when or if gas hydrates will be commercially produced will need many similar and more extended testing efforts," Collett told the <a href="http://hosted.ap.org/dynamic/stories/A/AS_CHINA_JAPAN_COMBUSTIBLE_ICE?SITE=AP&amp;SECTION=HOME&amp;TEMPLATE=DEFAULT&amp;CTIME=2017-05-19-05-48-55">AP.</a>

--

By: <a href="mailto:dbeasley@earth.com">David Beasley </a><a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Source: <a href="http://hosted.ap.org/dynamic/stories/A/AS_CHINA_JAPAN_COMBUSTIBLE_ICE?SITE=AP&amp;SECTION=HOME&amp;TEMPLATE=DEFAULT&amp;CTIME=2017-05-19-05-48-55">AP</a>

Japan and China extract frozen fossil fuel from the sea floor

Japan and China have successfully extracted a frozen fossil fuel...

Friday May 19th is Bike to Work Day, and in honor of the occasion, we’ve accumulated a few stories of the success of biking as an alternative to CO2-spewing road vehicles. 

Cykelhuset

Cykelhuset is a thing, apparently. The word means “bicycle house” in Swedish, and it refers to a new seven-story apartment building in Malmö that comes with everything but parking spaces. 

“The strategy is to look at why people have to use cars, and substitute bikes for the cars,” Cykelhuset’s architect, Cord Siegel, told Fast Company for an article that ran last August.

Among reasons for a car culture to exist anywhere is the need to drive to and from work. So Cykelhuset was built close to the city center and train station.  Shoppers must also drive in order to carry cumbersome packages. So Cykelhuset residents get oversize mail delivery boxes for ease of online shopping. And the complex offers the use of cargo bikes for transporting kids or larger packages.

For convenience’ sake, the building’s elevators are wide and the doors open at both ends for the easy on-off maneuvering of bikes to apartments. In short, just about every detail has been addressed to make it easier for residents to make bikes their main mode of transportation.  

Cykelhuset might not be that unusual today. Many areas of the world -- including significant portions of the U.S. -- have discovered the benefits of biking in terms of not only personal health, but its contribution to the health of the planet.

Cars vs. Bikes

According to a publication released by the Clean Air Council, motor vehicle emissions represent 31 percent of total carbon dioxide, 81 percent of carbon monoxide and 49 percent of nitrogen oxides released in the United States. 

Sure, vehicular emissions aren’t healthy, but what’s the alternative? Actually, it’s easier than you might think.

From the Nationwide Personal Transportation Survey, sponsored by the U.S. Department of Transportation, comes the fact that half of the working population commutes five miles to work, or less. Twenty-five percent of all trips are made within a mile of the house, and more than 82 percent of trips of five miles or less are made by motor vehicle. See the opportunity? 

Then there’s this from the Environmental Students Organization at the University of California, Sacramento: “Between 70 and 100 bicycles can be built with the resources to build one car.” The group also points out that a typical road can accommodate three times more bikes than cars, and, well, you can just about park anywhere -- for free. 

The bottom line is that bike riding reduces harmful gases into the atmosphere, uses far less natural resources in production and take up less space on the road and in parking. 

Urban appeal

Believe it or not, some of the largest and most famously congested American cities -- Chicago, New York and San Francisco -- are among the nation’s most bike-friendly metros, according to Bicycling Magazine’s bi-annual ranking of 50 Best Bike Cities. Or maybe it makes a lot of sense. Bicyclists whizz by idling drivers in most of our major cities.

The high ranking of The Big Apple is the result of significant bicycle infrastructure investments, states Bicycling Magazine: “Across the city, (bicycle) ridership increased by 83 percent between 2010 and 2014, according to a recent report from the NYDOT. Additionally, data from Citi Bike, the country’s largest and most popular bike-share system, shows that in Midtown bicycle speeds now outpace cabs by 2 mph.”

The number-three position in the 2016 bike-friendly city ranking was taken by Portland, Oregon.  The West Coast city is so into biking that the annual Pedalpalooza is a major tourist attraction. The nearly month-long celebration of biking starts June 1 and features 239 riding events for bicyclists of all ages and skill levels. The most famous event is the World Naked Bike Ride -- but never fear -- most events are not clothing optional, and some are even costumed rides. 

Biking for everyone

Those crazy Scandinavians. In addition to Cykelhuset, the region has adopted a small fleet of pedal-powered school buses for transporting kids as young as four. A bike bus is pretty much what it sounds like. It’s a pedal-powered mass transit vehicle that looks like a kid-friendly school bus and is powered by an adult operator and nearly a dozen riders who actually ride -- they don’t just sit there.

When there aren’t enought pedal-pushers to provide power or the terrain’s too steep, there’s an electric motor for added oomph. Each bike bus, currently available in parts of the Netherlands, Belgium and Germany, only costs $15,000. This is, as TreeHugger points out <a href="https://www.treehugger.com/bikes/netherlands-kids-take-bicycle-bus-school.html">in this article</a>, “just over twice the cost of fuel consumed by each regular school bus per year in the United States.” (Of course, it should also be pointed out that conventional school buses carry many more passengers than the bike buses, so most school districts would have to expand their fleet sizes in converting to the kid-powered vehicles.) 

The Tempo is right

Sure, biking is great, but you’ve got to cut residents of such famously hilly cities as San Francisco or Pittsburgh a little slack -- right? And how about those who live too far away for convenient pedaling? A long bike ride would leave them sweaty and exhausted before they even showed up for work…late, no doubt.  Surely they can’t enjoy the benefits of a <a href="https://www.earth.com/news/eco-friendly-hipsters/">bicycle</a> commute.

“My goal is to get more butts on bikes,” Van Nguyen, the owner of <a href="http://tempobicycles.com/">Tempo Bicycles</a>, told <a href="http://earth.com">Earth.com</a>.

Nguyen’s hybrid electric “ebikes” democratize the act of bicycling by assisting the rider with a rechargeable electric motor that’s employed only when needed.

“All you have to do as a rider is control how much assist you want,” she said. “If you want to work out you decrease assist,” and pedal your way to your destination. 

Nguyen described a scenario in which a Tempo bicyclist uses assist power on the way to work in order to arrive looking her best, and then pedals home for a go-for-broke end of day workout. She also sees her bikes as ideal vehicles for seniors who want to stay active but aren’t as physically capable as they once were.

“It’s about mobility as well as sustainability,” Nguyen said about bicycling in general and her Tempo Bikes solution for all.

Calculate your savings

Thinking about at least giving biking a try? Bike-to-Work Day is a great time to grab a little motivation. Get psyched by considering the possible bottom-line benefits. Use this <a href="http://www.kiplinger.com/tool/spending/T061-S001-how-much-can-i-save-biking-to-work/index.php">savings calculator by Kiplinger</a> to plug in your current car commuting costs and see how much you could save by even occasionally pedaling your way to a healthier you and a slightly greener planet. You could also use this <a href="http://www.bikingexpert.com/bike-mileage-calculator-tool/">bike mileage calculator tool</a> from BikingExpert to monitor miles biked and real time speed.

--

Original Feature by <a href="mailto:DSearls@earth.com">David Searls</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Earth.com celebrates Bike To Work Day

Friday May 19th is Bike to Work Day, and in...

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



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



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



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



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



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



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



Video Credit: Amanda Nguyen/University of Illinois



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



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...

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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...

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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.

Lesotho: Africa's "Kingdom in the Sky"

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



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



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



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



Video Credit: NASA Goddard



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



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

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



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



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



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



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



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



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



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



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



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



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...

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



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



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



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



Video/ Image Credit: NASA Goddard



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



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2022 illustrated the consequences of a warming climate

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

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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...

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



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



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



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



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



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



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



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Tiger sharks are shifting poleward as temperatures rise

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

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



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



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



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



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



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



Video Credit: ESA&nbsp;



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



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.

Melt ponds on the Greenland Ice Sheet

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



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



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



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



Video Credit: ESA



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



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.

Tracking changes in Earth's water cycle

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Saturn,-,High,Resolution,3d,Images,Presents,Planets,Of,The

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



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



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



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



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



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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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.

Mysterious "spoke season" captured on Saturn

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

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



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



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



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



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



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



Video Credit: NTU Singapore



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



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.

Plants help remove heavy metals from contaminated soil

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



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



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



Video Credit: American Chemical Society&nbsp;



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



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.

Weeds are becoming increasingly resistant to herbicides

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



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



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



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



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



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



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



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.

NASA monitors giant dust storms on Mars

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



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



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



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



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



Video Credit: ESA&nbsp;



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



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

Qeshm Island in the Strait of Hormuz

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



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



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



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



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



Video/ Image Credit: ESA



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



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

Inhambane Bay in southeast Mozambique

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



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



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



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



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



Video Credit: ESA



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



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

Kangerlussuaq Glacier on the Greenland ice sheet

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



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



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



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



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



Video Credit: ESA



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



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

Ocean heat influences regional climate

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



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



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



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



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



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



Image/ Video Credit: ESA



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

Monitoring the dynamic shape of the sea surface

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Aerial,Photo,Of,River,In,Amazon,Rainforest,Jungle,In,Peru

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Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA’s Goddard Space Flight Center</a> describes how scientists are using autonomous sound sensors to monitor deforestation in the Amazon. By recording soundscapes, the experts can determine which animals are present through their distinct sounds.&nbsp;



Using this method, sounds can be used as scientific measurements to analyze the effects of deforestation. The researchers will gain a better understanding of how the acoustics of a forest can be used to measure its health.&nbsp;



"From space, parts of the Amazon rainforest that have previously been logged or burned may look lush and green, like a place buzzing with activity and full of sounds. But inside the rainforest, the animal life may tell a different story, of a harsh environment and a quieter soundscape," says NASA.



Video Credit: NASA’s Goddard Space Flight Center&nbsp;



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

Monitoring deforestation in the Amazon through sounds

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