Legends about a boiling, scalding river that roasts anything that falls inside may sound like fiction. Yet nestled in the Peruvian rainforest, a curious waterway <a href="https://www.ted.com/talks/andres_ruzo_the_boiling_river_of_the_amazon" target="_blank" rel="noreferrer noopener">proves</a> these stories are far from mythical.



Its waters can reach 210°F, a temperature that can cause severe burns within seconds. For decades, local communities spoke of a place so hot that small <a href="https://www.earth.com/news/cold-shocks-in-the-amazon-how-do-wild-animals-respond/" target="_blank" rel="noreferrer noopener">animals perish</a> upon touching its surface.



<h2 class="wp-block-heading" id="h-the-boiling-river-in-peru">The "Boiling River" in Peru</h2>



The "Boiling River" is located in the Mayantuyacu region of central Peru. The river’s length is around 4 miles, and it can be up to about 20 feet wide in some sections.



A team of scientists led by <a href="https://www.rileyfortier.com/" target="_blank" rel="noreferrer noopener">Riley Fortier</a>, a graduate student at the <a href="https://welcome.miami.edu/" target="_blank" rel="noreferrer noopener">University of Miami</a>, surveyed 70 sites along this tributary. 



"It really provides us a window into the future because the Amazon will get hotter whether we like it or not, so this allows us to understand what increases in temperature will do to the forest composition," said Riley Fortier, lead author on a study of the site published in <a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcb.17555" target="_blank" rel="noreferrer noopener">Global Change Biology</a>, and a graduate student in professor Kenneth Feeley's <a href="https://www.junglebiology.org/" target="_blank" rel="noreferrer noopener">Jungle Biology lab</a>.



The team wanted to see how extreme heat shapes the surrounding forest.



By mapping the tree and plant species from cooler upstream areas down to the scalding heart of the river, they discovered a startling drop in biological variety. 



Findings <a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcb.17555" target="_blank" rel="noreferrer noopener">showed</a> an 11% decline in biodiversity for each 1.8°F rise in average temperature.



<h2 class="wp-block-heading" id="h-why-the-boiling-river-boils">Why the boiling river boils</h2>



Geoscientists attribute the heat to fault-fed activity, where underground water channels meet Earth’s geothermal energy. 



A fault is a <a href="https://www.usgs.gov/faqs/what-a-fault-and-what-are-different-types" target="_blank" rel="noreferrer noopener">large fracture</a> in the crust that provides a direct path for scorching fluid to surge toward the surface.



Researchers believe that rainwater infiltrating sedimentary rock becomes superheated below ground. It then emerges as a system of hot springs converging with the main watercourse, creating a natural cauldron.



“You stick your hand in, and you will see second or third degree burns in a matter of seconds,” said Ruzo, who first measured the river’s peak heat. 



<h2 class="wp-block-heading" id="h-signs-of-changing-forests">Signs of changing forests</h2>



Many local inhabitants regard the site with deep respect because anything that wanders too close risks a painful encounter.



Certain plants thrive on the fringes, but most large creatures struggle with the sweltering <a href="https://www.earth.com/news/tiny-microbes-in-amazon-peatlands-help-balance-the-global-climate/" target="_blank" rel="noreferrer noopener">environment</a>. Adaptations are limited for organisms facing water that can reach coffee-brewing temperatures.



"Overall, the tree community is less diverse, so we see fewer species in hotter spots," Fortier said. "And forest composition was also more homogenous in the warmest locations, whereas in cooler forest plots, there was more plant diversity."



Botanical surveys from cooler sections toward the hotter stretches revealed how tree diversity narrows. In place of thick canopies, the research team documented more scrubby <a href="https://www.earth.com/news/rainforest-trees-use-rivers-as-highways-for-migration/" target="_blank" rel="noreferrer noopener">vegetation</a>.



"Over the course of dozens of miles, you might expect to see dramatic changes like that, but in the small sampling area that we had, you typically wouldn't see such a clear change in composition," Fortier added.



Small species adapted to drought-like conditions gained ground as the mercury rose. Larger, slower-growing trees faded away, reflecting how intense heat reshapes even lush ecosystems.



<h2 class="wp-block-heading" id="h-boiling-rivers-and-future-climate">Boiling rivers and future climate</h2>



Fortier’s data suggest that as worldwide temperatures climb, similar shifts could spread across other <a href="https://www.earth.com/news/the-amazon-rainforest-is-approaching-widespread-collapse/" target="_blank" rel="noreferrer noopener">lowland rainforests</a>.



Changes may include declines in species that cannot handle additional heat and a rise in those more comfortable with higher temperatures.



Scientists note that an environment featuring fewer tree varieties will likely support fewer types of animals too. The loss of one group often sends ripples through the entire food web.



The boiling tributary, known locally as <a href="https://shanaytimpishka.com/" target="_blank" rel="noreferrer noopener">Shanay-Timpishka</a>, meaning “boiled with the heat of the sun,” stands as a stark example of what could happen if average temperatures continue to climb. 



Areas that were once rich in wildlife may morph into simpler, drier landscapes. Observers hope that studying this natural hotspot will inspire careful planning to protect sensitive habitats. 



Even though the river is unique, it signals what may lie ahead for places currently seen as safe havens for biodiversity.



<h2 class="wp-block-heading" id="h-ongoing-investigations">Ongoing investigations</h2>



Researchers plan to gather long-term data and explore whether <a href="https://www.earth.com/news/nearly-40-of-climate-critical-amazon-rainforest-is-unprotected/" target="_blank" rel="noreferrer noopener">flora and fauna</a> can adapt to persistently higher temperatures. They will also watch for signs of any species shifting to cooler pockets.



Some scientists are examining whether the warming patterns near this location might parallel broader trends in tropical zones. 



They predict that more forests around the globe could face intense thermal stress, forcing communities to adapt or relocate.



Feeley's lab will continue its research of the boiling river, since it is such a unique place that could portend much about our natural world.



"You can't heat a whole forest, at least not artificially, which is one of the coolest aspects of the boiling river," Fortier added.



The study is published in <a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcb.17555" target="_blank" rel="noreferrer noopener">Global Change Biology</a>.



-----



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One river in the Amazon rainforest is so hot that it literally boils, destroying nearby biodiversity

Legends about a boiling, scalding river that roasts anything that falls inside may sound like fiction. Yet nestled in the Peruvian rainforest, a curious waterway proves these stories are far from mythical. Its waters can reach 210°F, a temperature that can cause severe burns within seconds. For decades, local communities spoke of a place so hot that small animals perish upon touching its surface. The "Boiling River" in Peru The "Boiling River" is located in the Mayantuyacu region of central Peru. The river’s length is around 4...

Hawaii Waikiki Closure

Another Hawaii Beach Closed After Massive Sewage Spill. For the second time in a week a popular Hawaii beach closed Thursday after sewage from a treatment plant was discharged into the ocean.
A million gallons of treated but not yet disinfected wastewater was discharged from the East Honolulu Wastewater Treatment plant, closing Sandy Beach and its surroundings. The closure comes a day after beaches near Waikiki were reopened following a similar issue.
Hawaii American Water, the private company that runs the treatment plant, said the incident happened Tuesday after an underground electrical cable that feeds power to their chlorination system shorted out as heavy rains fell in the area. Another Hawaii Beach Closed After Massive Sewage Spill


[caption id="attachment_2384161" align="alignleft" width="150"]<a href="http://cff1.greenatom.net/uploads/2015/08/28101600/beach-closing-hawaii-wastewater_2big_ap.jpg"><img class="size-thumbnail wp-image-2384161" src="http://cff1.greenatom.net/uploads/2015/08/28101600/beach-closing-hawaii-wastewater_2big_ap-150x150.jpg" alt="Scott Muranka, of the Hawaii Department of Health" width="150" height="150" /></a> Scott Muranka, of the Hawaii Department of Health[/caption]
Lee Mansfield, manager of American Water, said in a telephone interview Thursday that there was un-disinfected water flowing into the ocean from their system for about five hours, resulting in about a million gallons of wastewater being discharged.
He said the water that flowed into the ocean had been treated through the plant, removing heavy debris and contaminants, but the water was not chlorinated before being discharged.
"We receive wastewater and we'll remove grit and large material, then we go through the primary sedimentation process, and that removes material that will readily settle out of the wastewater," Mansfield said. The water then goes through a biological treatment before being chlorinated, he said.
The state Department of Health released a statement advising the public to stay out of the waters from Halona Blow Hole to Erma's Beach on Oahu's southeast shore until further notice. Water samples were being taken for testing.
Another spill from Monday near Hickam Beach on Joint Base Pearl Harbor-Hickam was announced Thursday, prompting officials to tell the public to avoid those waters as well.
Officials said about 24,000 gallons spilled there, 12,000 of which went into a storm drain that leads into a canal near Hickam Beach. Water samples are being taken and the beach has posted with signs warning visitors of the potential dangers.
On Monday about 400,000 gallons of wastewater spilled in Ala Moana Beach Park after heavy rains associated with <a href="http://www.earth.com/image/tropical-storm-cristobal-over-the-yucatan-peninsula/">Tropical Storm</a> Kilo inundated the system. Officials opened the waters Wednesday afternoon after testing showed the water was safe.
Lori Kahikina, Honolulu's director of environmental services, said less sewage spilled than the half-million gallons the city initially reported.
She said Wednesday 129,000 gallons of wastewater flowed into the ocean. Another 264,000 spilled on land but never reached the ocean.
Officials said the Honolulu Zoo, which is in Waikiki, also flooded Monday, raising concern that untreated material from the zoo had entered the ocean.
A week of heavy rain had left the ground saturated, inundating the sewer systems with rain water. More rain was forecast for Thursday with flash flood watches in effect.
Meanwhile in the Pacific, Ignacio strengthened into a hurricane. The storm's maximum sustained winds increased Thursday morning to 90 mph (150 kph).
Hurricane Ignacio was centered about 1,135 miles (1,825 kilometers) east-southeast of Hilo, Hawaii, and was moving toward the state near 13 mph (20 kph). The storm could reach the islands by early next week.
---
Follow Caleb Jones on Twitter: <a href="https://twitter.com/CalebAP" target="_blank" rel="noopener noreferrer">https://twitter.com/CalebAP</a>
© 2015 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.

Another Hawaii Beach Closed After Massive Sewage Spill

Another Hawaii Beach Closed After Massive Sewage Spill. For the...

Mauri Pelto digs his crampons into the steep icy slope on Mount Baker in Washington state and watches as streams of water cascade off the thick mass of bare, bluish ice. Every 20 yards, the water carves vertical channels in the face of the glacier as it rushes downstream.
What little snow from last winter is already gone, so ice is melting off the glacier at a rate of nearly three inches a day this summer, he said.
"At the rate it's losing mass, it won't make it 50 years," said Pelto, a glaciologist who returned this month for the 32nd year to study glaciers in the North Cascades range. "This is a dying glacier," he said.
Glaciers on Mount Baker and other mountains in the North Cascades are thinning and retreating. Seven have disappeared over the past three decades, and the overall volume of glaciers in the range have lost about one-fifth of their volume.
The shrinking glaciers here mirror what is happening around the U.S. and worldwide: As the planet warms, glaciers are losing volume, some faster than others.
Two of the largest glaciers in Yosemite National Park in California have retreated over the past century, losing about two-thirds of their surface areas. In Alaska, a recent study of 116 glaciers estimated they have lost about 75 billion metric tons of ice every year from 1994 to 2013. In Montana, scientists are already seeing the impacts in increased stream temperature and changes to high-elevation ecosystems. In 1850, there were 150 glaciers at Glacier National Park; now there are 25.
"These glaciers are, from a geological standpoint, rapidly disappearing from the landscape," said Dan Fagre, a research ecologist with U.S. Geological Survey stationed in Glacier National Park. "They're so small and vulnerable that they could be gone in a matter of decades."
Glaciers -thick masses of accumulated snow that compress into ice and move - are important indicators of climate change because they are driven by precipitation and temperature.
The glaciers on Mount Baker, a volcanic peak about 125 miles northwest of Seattle, provide a critical water source for agriculture, cities and tribes during the late summer. The icy glacial melt keeps streams cool for fish and replenishes rivers during a time of year when they typically run low.
For the Nooksack Indian Tribe, which has relied for hundreds of years on salmon runs in the glacier-fed Nooksack River, a way of life is at risk. Without that glacial runoff, rivers will dry up more quickly and warm up faster, making it harder for salmon to spawn or migrate to the ocean.
"Climate change will impact the ability of tribal members to harvest fish in the future," said Oliver Grah, water resources manager for the tribe, which has teamed up with Pelto. They want to know how glacier runoff will affect the river's hydrology and ultimately fish habitat and restoration planning.
On a recent day in August, Grah and colleague Jezra Beaulieu hiked 5 miles into the Sholes Glacier to study how climate change will influence the timing and magnitude of stream flow in the river. It's their fifth field trip to the glacier this summer, and each time they're amazed at how rapidly the snow and ice are melting.
Grah strings a measuring tape across the stream, wades in shin-deep in the fast-moving, brownish water and measures the depth of the water streaming from the toe of the glacier. He calls out numbers that Beaulieu records in a yellow notebook. They're trying to calculate how much flow and sediment is coming from the glacier.
"This is a frozen reservoir that yields water all summer long," said Pelto, a professor of environmental sciences at Nichols College in Dudley, Massachusetts. "So you take this away and what are you going to replace it with?"
The tribe also is collaborating with Western Washington University, which is using data collected in the field to model what the streamflow will be like in the future.
"The late summer flows controlled by melting glaciers are predicted to decrease as the glaciers get smaller and smaller," said Robert Mitchell, a geology professor at Western Washington University.
This year, a record low snowpack in Washington state and warmer temperatures have made it one of the worst Pelto has seen in over three decades.
"They're losing volume at a faster rate than ever before," Pelto said. "If you can't sustain a glacier at a place like this in the Lower 48 states, there's no hope."
© 2015 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.

Scientists Voice Concerns Over Rapidly Shrinking Glaciers On Mount Baker

Mauri Pelto digs his crampons into the steep icy slope...

Arctic OffShore Drilling

Shell Pauses Arctic Ocean Oil Drilling Strong winds and high waves that pounded the northern coast of Alaska have led Royal Dutch Shell PLC to temporarily stop exploratory <a href="https://www.bing.com/search?q=arctic+ocean&amp;FORM=EDGENA&amp;PC=HCTS&amp;refig=06f30f4e602a4654d276cea6f9598ffb">Arctic</a> Ocean oil drilling.
"Due to high wind and sea states, we have paused all critical operations in the Chukchi Sea," said spokesman Curtis Smith in an email response to questions.
The eastern Chukchi Sea this week experienced gale-force winds in the range of 39 to 54 p.m., said Ed Townsend, lead forecaster for the National Weather Service in Fairbanks. Winds at Point Lay on Alaska's northwest coast about 9 a.m. Friday blew steadily at 29 mph with gusts to 37 mph.Shell Pauses Arctic Ocean Oil Drilling
Smith said he isn't sure when drilling might resume. "We hope to resume normal operations as soon as it's safe to do so," he said.
The Polar Pioneer, a semi-submersible drilling unit that Shell leases from Transocean Ltd., began top-hole and drilling work July 30 and remains safely anchored at the drill site, Smith said.
Bad weather has postponed previous drilling operations, Smith said, and Shell plans for it. Bad weather affected drilling in both the Chukchi and Beaufort seas in 2012.
"It's why we use a combination of satellite images, sonar and on-site reconnaissance to inform our operations," he said. "With safety the first priority, we take a conservative approach to these weather events and make plans to curtail operations well in advance."
Arctic offshore drilling is strongly opposed by environmental groups that say oil companies have not demonstrated the ability to respond effectively to a spill in harsh conditions where floating ice could hamper cleanup operations.
"Imagine trying to respond to a spill in that kind of weather," said Pam Miller, a longtime Arctic researcher and environmental advocate in Fairbanks.
Halting drilling for severe weather or moving ice was a common occurrence for Shell drilling in 1989 and 1990, she said. Global warming's effect on sea ice, which formerly acted like a blanket over waves, adds to the risk.
"The waves may be even greater. We know they are along shore, where coastal erosion is a problem," she said.
Every time a drill rigs disconnects from a well for weather or ice moving in, she said, it adds to the risk of a spill.
The weather is also affecting operations on shore. Shell is temporarily relocating staff at its housing camp in Barrow, the northernmost city in the United States. "A road used to transport people to the camp is down to one lane due to high water and could become impassable," Smith said.
© 2015 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.

Shell Pauses Arctic Ocean Oil Drilling

Shell Pauses Arctic Ocean Oil Drilling Strong winds and high...

Scientists Voice Concerns Over Rapidly Shrinking Glaciers . Mauri Pelto digs his crampons into the steep icy slope on Mount Baker in Washington state and watches as streams of water cascade off the thick mass of bare, bluish ice. Every 20 yards, the water carves vertical channels in the face of the glacier as it rushes downstream.
What little snow from last winter is already gone, so ice is melting off the glacier at a rate of nearly three inches a day this summer, he said. Scientists Voice Concerns Over Rapidly Shrinking Glaciers
"At the rate it's losing mass, it won't make it 50 years," said Pelto, a glaciologist who returned this month for the 32nd year to study glaciers in the North Cascades range. "This is a dying glacier," he said.
Glaciers on Mount Baker and other mountains in the North Cascades are thinning and retreating. Seven have disappeared over the past three decades, and the overall volume of glaciers in the range have lost about one-fifth of their volume.
The shrinking glaciers here mirror what is happening around the U.S. and worldwide: As the planet warms, glaciers are losing volume, some faster than others.
Two of the largest glaciers in Yosemite National Park in California have retreated over the past century, losing about two-thirds of their surface areas. In Alaska, a recent study of 116 glaciers estimated they have lost about 75 billion metric tons of ice every year from 1994 to 2013. In Montana, scientists are already seeing the impacts in increased stream temperature and changes to high-elevation ecosystems. In 1850, there were 150 glaciers at Glacier National Park; now there are 25.
"These glaciers are, from a geological standpoint, rapidly disappearing from the landscape," said Dan Fagre, a research ecologist with U.S. Geological Survey stationed in Glacier National Park. "They're so small and vulnerable that they could be gone in a matter of decades."
Glaciers -thick masses of accumulated snow that compress into ice and move - are important indicators of climate change because they are driven by precipitation and temperature.
The glaciers on Mount Baker, a volcanic peak about 125 miles northwest of Seattle, provide a critical water source for agriculture, cities and tribes during the late summer. The icy glacial melt keeps streams cool for fish and replenishes rivers during a time of year when they typically run low.
For the Nooksack Indian Tribe, which has relied for hundreds of years on salmon runs in the glacier-fed Nooksack River, a way of life is at risk. Without that glacial runoff, rivers will dry up more quickly and warm up faster, making it harder for salmon to spawn or migrate to the ocean.
"Climate change will impact the ability of tribal members to harvest fish in the future," said Oliver Grah, water resources manager for the tribe, which has teamed up with Pelto. They want to know how glacier runoff will affect the river's hydrology and ultimately fish habitat and restoration planning.
On a recent day in August, Grah and colleague Jezra Beaulieu hiked 5 miles into the Sholes <a href="http://www.earth.com/video/petermann-glacier-may-release-another-large-iceberg/">Glacier</a> to study how climate change will influence the timing and magnitude of stream flow in the river. It's their fifth field trip to the glacier this summer, and each time they're amazed at how rapidly the snow and ice are melting.
Grah strings a measuring tape across the stream, wades in shin-deep in the fast-moving, brownish water and measures the depth of the water streaming from the toe of the glacier. He calls out numbers that Beaulieu records in a yellow notebook. They're trying to calculate how much flow and sediment is coming from the glacier. Glaciers on Mount Baker and other mountains in the North Cascades are thinning and retreating. Seven have disappeared over the past three decades
"This is a frozen reservoir that yields water all summer long," said Pelto, a professor of environmental sciences at Nichols College in Dudley, Massachusetts. "So you take this away and what are you going to replace it with?"
The tribe also is collaborating with Western <a href="https://www.bing.com/search?q=washington&amp;cvid=d83a745dbdda4e0a82fcb7a019622c12&amp;FORM=ANAB01&amp;PC=HCTS">Washington</a> University, which is using data collected in the field to model what the streamflow will be like in the future.
"The late summer flows controlled by melting glaciers are predicted to decrease as the glaciers get smaller and smaller," said Robert Mitchell, a geology professor at Western Washington University.
This year, a record low snowpack in Washington state and warmer temperatures have made it one of the worst Pelto has seen in over three decades.
"They're losing volume at a faster rate than ever before," Pelto said. "If you can't sustain a glacier at a place like this in the Lower 48 states, there's no hope."
© 2015 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.

Scientists Voice Concerns Over Rapidly Shrinking Glaciers

Scientists Voice Concerns Over Rapidly Shrinking Glaciers . Mauri Pelto...

Severe Weather Is Threatening The World's Temperate Forests. Longer, more severe, and hotter droughts and a myriad of other threats, including diseases and more extensive and severe wildfires, are threatening to transform some of the world's temperate forests, a new study published in Science has found. Without informed management, some <a href="http://www.earth.com/news/when-the-dinosaurs-vanished-forests-expanded-and-thrived/">forests</a> could convert to shrublands or grasslands within the coming decades.

"While we have been trying to manage for resilience of 20th century conditions, we realize now that we must prepare for transformations and attempt to ease these conversions," said Constance Millar, lead author and forest ecologist with the <a href="https://www.bing.com/search?q=USDA&amp;cvid=7c17b16917a14313a802832d4c537ed2&amp;FORM=ANAB01&amp;PC=HCTS">USDA</a> Forest Service's Pacific Southwest Research Station.

Many forests are remarkably resilient, re-growing after years of logging. Yet, the researchers note from review of the enormous body of work on the subject, climate change and rising global temperatures are giving rise to "hotter" droughts -- droughts that exhibit a level of severity beyond that witnessed in the past century. During a hotter drought, high air temperatures overheat leaves and also increase the stress on trees by drawing the moisture from their tissues at faster rates than normal. Snow that would normally act as emergency water storage for trees during the dry season instead falls as rain. Severe Weather Is Threatening The World's Temperate Forests

Combined, these factors may cause abnormally high levels of forest mortality during hotter droughts.

"Some temperate forests already appear to be showing chronic effects of warming temperatures, such as slow increases in tree deaths," said Nathan Stephenson, coauthor and ecologist with the U.S. Geological Survey. "But the emergence of megadisturbances, forest diebacks beyond the range of what we've normally seen over the last century, could be a game-changer for how we plan for the future."

Chronic stress from drought and warming temperatures also expose temperate forests to insect and disease outbreaks. And as temperatures rise in many regions, fires grow in frequency and severity causing losses in private property, natural resources and lives.

Losing temperate forests to worsening droughts, megafires and insect and disease outbreaks could lead to widespread losses of forest ecosystem services like national park recreational areas, the researchers caution. Forests also play an important role in storing atmospheric carbon dioxide and watershed protection, for example. The scientists encourage future studies identifying forests most vulnerable to the effects of mega-disturbances. In some cases, forest managers may be able to preserve ecosystem services like carbon storage as temperate forests transition to new ecological states.

---

<a href="http://www.fs.fed.us/psw/" target="_blank" rel="noopener noreferrer">US Forest Service</a>

Severe Weather Is Threatening The World's Temperate Forests

Severe Weather Is Threatening The World's Temperate Forests. Longer, more...

Longer, more severe, and hotter droughts and a myriad of other threats, including diseases and more extensive and severe wildfires, are threatening to transform some of the world's temperate forests, a new study published in Science has found. Without informed management, some forests could convert to shrublands or grasslands within the coming decades.

"While we have been trying to manage for resilience of 20th century conditions, we realize now that we must prepare for transformations and attempt to ease these conversions," said Constance Millar, lead author and forest ecologist with the USDA Forest Service's Pacific Southwest Research Station.

Many forests are remarkably resilient, re-growing after years of logging. Yet, the researchers note from review of the enormous body of work on the subject, climate change and rising global temperatures are giving rise to "hotter" droughts -- droughts that exhibit a level of severity beyond that witnessed in the past century. During a hotter drought, high air temperatures overheat leaves and also increase the stress on trees by drawing the moisture from their tissues at faster rates than normal. Snow that would normally act as emergency water storage for trees during the dry season instead falls as rain.

Combined, these factors may cause abnormally high levels of forest mortality during hotter droughts.

"Some temperate forests already appear to be showing chronic effects of warming temperatures, such as slow increases in tree deaths," said Nathan Stephenson, coauthor and ecologist with the U.S. Geological Survey. "But the emergence of megadisturbances, forest diebacks beyond the range of what we've normally seen over the last century, could be a game-changer for how we plan for the future."

Chronic stress from drought and warming temperatures also expose temperate forests to insect and disease outbreaks. And as temperatures rise in many regions, fires grow in frequency and severity causing losses in private property, natural resources and lives.

Losing temperate forests to worsening droughts, megafires and insect and disease outbreaks could lead to widespread losses of forest ecosystem services like national park recreational areas, the researchers caution. Forests also play an important role in storing atmospheric carbon dioxide and watershed protection, for example. The scientists encourage future studies identifying forests most vulnerable to the effects of mega-disturbances. In some cases, forest managers may be able to preserve ecosystem services like carbon storage as temperate forests transition to new ecological states.

---

<a href="http://www.fs.fed.us/psw/" target="_blank" rel="noopener">US Forest Service</a>

Longer, more severe, and hotter droughts and a myriad of...

Shell Pauses Arctic Ocean Oil Drilling. Strong winds and high waves that pounded the northern coast of Alaska have led Royal Dutch Shell PLC to temporarily stop exploratory Arctic Ocean oil drilling.
"Due to high wind and sea states, we have paused all critical operations in the Chukchi Sea," said spokesman Curtis Smith in an email response to questions.
The eastern Chukchi Sea this week experienced gale-force winds in the range of 39 to 54 p.m., said Ed Townsend, lead forecaster for the National Weather Service in <a href="http://www.earth.com/image/smoke-in-fairbanks-and-interior-alaska/">Fairbanks</a>. Winds at Point Lay on Alaska's northwest coast about 9 a.m. Friday blew steadily at 29 mph with gusts to 37 mph.
Smith said he isn't sure when drilling might resume. "We hope to resume normal operations as soon as it's safe to do so," he said. Shell Pauses <a href="https://www.bing.com/search?q=Arctic+Ocean&amp;cvid=cd4c84b8e43843208b312041e1523265&amp;FORM=ANAB01&amp;PC=HCTS">Arctic Ocean </a>Oil Drilling
The Polar Pioneer, a semi-submersible drilling unit that Shell leases from Transocean Ltd., began top-hole and drilling work July 30 and remains safely anchored at the drill site, Smith said.
Bad weather has postponed previous drilling operations, Smith said, and Shell plans for it. Bad weather affected drilling in both the Chukchi and Beaufort seas in 2012.
"It's why we use a combination of satellite images, sonar and on-site reconnaissance to inform our operations," he said. "With safety the first priority, we take a conservative approach to these weather events and make plans to curtail operations well in advance."
Arctic offshore drilling is strongly opposed by environmental groups that say oil companies have not demonstrated the ability to respond effectively to a spill in harsh conditions where floating ice could hamper cleanup operations.
"Imagine trying to respond to a spill in that kind of weather," said Pam Miller, a longtime Arctic researcher and environmental advocate in Fairbanks.
Halting drilling for severe weather or moving ice was a common occurrence for Shell drilling in 1989 and 1990, she said. Global warming's effect on sea ice, which formerly acted like a blanket over waves, adds to the risk.
"The waves may be even greater. We know they are along shore, where coastal erosion is a problem," she said.
Every time a drill rigs disconnects from a well for weather or ice moving in, she said, it adds to the risk of a spill.
The weather is also affecting operations on shore. Shell is temporarily relocating staff at its housing camp in Barrow, the northernmost city in the United States. "A road used to transport people to the camp is down to one lane due to high water and could become impassable," Smith said.
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Shell Pauses Arctic Ocean Oil Drilling. Strong winds and high...

With melting glaciers and rising seas as his backdrop, President Barack Obama will visit Alaska next week to press for urgent global climate action to combat climate change, even as he carefully calibrates his message in a state heavily dependent on oil.
Obama will become the first sitting president to visit the Alaska Arctic when he travels to Kotzebue - population around 3,000 - just north of the Arctic Circle at the end of his three-day trip. He'll kick off the visit Monday with a speech to a State Department-hosted conference on climate change and the Arctic.
The unambiguous goal of the president's trip is to use dramatic and alarming changes to Alaska's climate to instill fresh urgency into his global warming agenda. Sea ice is melting, critical permafrost is thawing and Alaska's cherished glaciers are liquefying - powerful visuals that Obama hopes will illustrate the threat to natural wonders and livelihoods and serve as a global call to action.
"This is all real," Obama said in his weekly address released Saturday. "This is happening to our fellow Americans right now."
Yet Obama has taken steps that show he's cautiously navigating the competing environmental and energy interests at play. A few weeks ago, his administration gave Royal Dutch Shell a final permit to drill into oil-bearing rock off Alaska's northwest coast for the first time in more than two decades.
"The president has made great strides in protecting the Arctic, but we are really disappointed with this decision," said Nicole Whittington-Evans, Alaska director for The Wilderness Society. "This is a point where we disagree."
For many Alaskans, though, the issue comes down to dollars and cents. Both the state government and its residents rely deeply on oil revenues to stay afloat, and falling oil prices have already created a serious budget deficit.
Brian Deese, Obama's senior adviser, sought to strike a balance between Alaska's economics needs and the president's goal to eventually phase out fossil fuels. "That's a transition that is not going to happen overnight," Deese said. In the meantime, he added, "oil and gas will remain important parts of our overall energy mix."
Ahead of Obama's visit, state Republican leaders emphasized the need for more energy development and urged Obama not to exploit the state's stunning scenery for political purposes. Sen. Dan Sullivan warned that any national or ocean monument designations "will go over like a lead balloon" among Alaska's Democrats and Republicans alike.
"What there's concern about is that he's going to use Alaska as some green screen for climate change, when he doesn't take the opportunity to dig into other issues that are important to Alaskans, important to the country," Sullivan said in an interview.
Obama has been investing time on an unfinished global climate treaty that nations hope to finalize in December, as he works to secure his environmental legacy before his presidency ends. The president has pledged a U.S. cut in greenhouse gas emissions of up to 28 percent by 2030, compared to 2005 levels, and plans to use the Alaska visit to build public pressure on other nations to commit to similarly ambitious measures.
After arriving in Anchorage on Monday afternoon, Obama plans to meet with Alaska Natives before addressing the Arctic climate resilience summit, dubbed GLACIER, which involves Arctic and non-Arctic leaders, scientists, environmental advocates and the energy industry. Secretary of State John Kerry, a key player in the climate treaty talks, also plans to speak.
In an unusual presidential photo-op, Obama will travel Tuesday to Seward, on Alaska's Kenai Peninsula, where the Exit Glacier is retreating in what environmentalists say is a dramatic sign of warming temperatures. After hiking to the glacier, Obama is to board a U.S. Coast Guard vessel to tour Kenai Fjords National Park.
His visit continues Wednesday in Dillingham, in southwest Alaska, where Obama will meet with fishermen locked in an ongoing conflict with miners over plans to build a massive gold and copper mine in Bristol Bay, home to the world's largest salmon fishery. Then he'll fly north to Kotzebue, a regional hub in the Alaska Arctic, where Obama will focus on the plight of rural, native villages where livelihoods are threatened by encroaching climate change.
While in Alaska, Obama is likely to face calls from Democrats and environmentalists to restrict Arctic drilling and to renew his request to Congress to make more of the Arctic National Wildlife Refuge, or ANWR, off-limits as well. Republicans and energy advocates planned to urge the president to clear the way for more drilling.
Aside from brief campaign stops, few presidents have spent significant time in Alaska. President Warren Harding, shortly before his death in 1923, toured nine Alaska communities in three parts of the state.
---
Reach Josh Lederman on Twitter at <a href="http://twitter.com/joshledermanAP" target="_blank" rel="noopener">http://twitter.com/joshledermanAP</a>
© 2015 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.

Obama To Press For Urgent Global Climate Action Next Week

With melting glaciers and rising seas as his backdrop, President...

Obama To Press For Urgent Global Climate Action Next Week. With melting glaciers and rising seas as his backdrop, President Barack Obama will visit Alaska next week to press for urgent global climate action to combat climate change, even as he carefully calibrates his message in a state heavily dependent on oil.
Obama will become the first sitting president to visit the Alaska Arctic when he travels to Kotzebue - population around 3,000 - just north of the Arctic Circle at the end of his three-day trip. He'll kick off the visit Monday with a speech to a State Department-hosted conference on climate change and the Arctic.
The unambiguous goal of the president's trip is to use dramatic and alarming changes to Alaska's climate to instill fresh urgency into his global warming agenda. <a href="http://www.earth.com/news/sea-stars-may-be-drowning-in-their-environment/">Sea</a> ice is melting, critical permafrost is thawing and Alaska's cherished glaciers are liquefying - powerful visuals that Obama hopes will illustrate the threat to natural wonders and livelihoods and serve as a global call to action.
"This is all real," Obama said in his weekly address released Saturday. "This is happening to our fellow Americans right now." Obama To Press For Urgent Global Climate Action Next Week
Yet Obama has taken steps that show he's cautiously navigating the competing environmental and energy interests at play. A few weeks ago, his administration gave Royal Dutch Shell a final permit to drill into oil-bearing rock off Alaska's northwest coast for the first time in more than two decades.
"The president has made great strides in protecting the Arctic, but we are really disappointed with this decision," said Nicole Whittington-Evans, Alaska director for The Wilderness Society. "This is a point where we disagree."
For many Alaskans, though, the issue comes down to dollars and cents. Both the state government and its residents rely deeply on oil revenues to stay afloat, and falling oil prices have already created a serious budget deficit.
Brian Deese, Obama's senior adviser, sought to strike a balance between Alaska's economics needs and the president's goal to eventually phase out fossil fuels. "That's a transition that is not going to happen overnight," Deese said. In the meantime, he added, "oil and gas will remain important parts of our overall energy mix."
Ahead of Obama's visit, state Republican leaders emphasized the need for more energy development and urged Obama not to exploit the state's stunning scenery for political purposes. Sen. Dan Sullivan warned that any national or ocean monument designations "will go over like a lead balloon" among Alaska's Democrats and Republicans alike.
"What there's concern about is that he's going to use Alaska as some green screen for climate change, when he doesn't take the opportunity to dig into other issues that are important to Alaskans, important to the country," Sullivan said in an interview.
Obama has been investing time on an unfinished global climate treaty that nations hope to finalize in December, as he works to secure his environmental legacy before his presidency ends. The president has pledged a U.S. cut in greenhouse gas emissions of up to 28 percent by 2030, compared to 2005 levels, and plans to use the Alaska visit to build public pressure on other nations to commit to similarly ambitious measures.
After arriving in Anchorage on Monday afternoon, Obama plans to meet with Alaska Natives before addressing the Arctic climate resilience summit, dubbed GLACIER, which involves Arctic and non-Arctic leaders, scientists, environmental advocates and the energy industry. Secretary of State John Kerry, a key player in the climate treaty talks, also plans to speak.
In an unusual presidential photo-op, Obama will travel Tuesday to Seward, on Alaska's Kenai Peninsula, where the Exit Glacier is retreating in what environmentalists say is a dramatic sign of warming temperatures. After hiking to the glacier, Obama is to board a U.S. Coast Guard vessel to tour Kenai Fjords National Park.
His visit continues Wednesday in Dillingham, in southwest Alaska, where Obama will meet with fishermen locked in an ongoing conflict with miners over plans to build a massive gold and copper mine in Bristol Bay, home to the world's largest salmon fishery. Then he'll fly north to Kotzebue, a regional hub in the Alaska Arctic, where Obama will focus on the plight of rural, native villages where livelihoods are threatened by encroaching climate change.
While in Alaska, Obama is likely to face calls from Democrats and environmentalists to restrict Arctic drilling and to renew his request to Congress to make more of the Arctic National Wildlife Refuge, or ANWR, off-limits as well. Republicans and energy advocates planned to urge the president to clear the way for more drilling.
Aside from brief campaign stops, few presidents have spent significant time in Alaska. President Warren Harding, shortly before his death in 1923, toured nine Alaska communities in three parts of the state.
---
Reach Josh Lederman on Twitter at <a href="http://twitter.com/joshledermanAP" target="_blank" rel="noopener noreferrer">http://twitter.com/joshledermanAP</a>
© 2015 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.

Obama To Press For Urgent Global Climate Action Next Week....

Severe Weather Is Threatening The World's Temperate Forests. Longer, more severe, and hotter droughts and a myriad of other threats, including diseases and more extensive and severe wildfires, are threatening to transform some of the world's temperate forests, a new study published in Science has found. Without informed management, some forests could convert to shrublands or grasslands within the coming decades.

"While we have been trying to manage for resilience of 20th century conditions, we realize now that we must prepare for transformations and attempt to ease these conversions," said Constance Millar, lead author and forest ecologist with the <a href="http://www.earth.com/news/usda-suspends-national-honey-bee-report/">USDA</a> Forest Service's Pacific Southwest Research Station. Severe Weather Is Threatening The World's Temperate Forests

Many forests are remarkably resilient, re-growing after years of logging. Yet, the researchers note from review of the enormous body of work on the subject, climate change and rising global temperatures are giving rise to "hotter" droughts -- droughts that exhibit a level of severity beyond that witnessed in the past century. During a hotter drought, high air temperatures overheat leaves and also increase the stress on trees by drawing the moisture from their tissues at faster rates than normal. Snow that would normally act as emergency water storage for trees during the dry season instead falls as rain.

Combined, these factors may cause abnormally high levels of forest mortality during hotter droughts.

"Some temperate forests already appear to be showing chronic effects of warming temperatures, such as slow increases in tree deaths," said Nathan Stephenson, coauthor and ecologist with the U.S. Geological Survey. "But the emergence of megadisturbances, forest diebacks beyond the range of what we've normally seen over the last century, could be a game-changer for how we plan for the future."

Chronic stress from drought and warming temperatures also expose temperate forests to insect and disease outbreaks. And as temperatures rise in many regions, fires grow in frequency and severity causing losses in private property, natural resources and lives.

Losing temperate forests to worsening droughts, megafires and insect and disease outbreaks could lead to widespread losses of forest ecosystem services like national park recreational areas, the researchers caution. Forests also play an important role in storing atmospheric carbon dioxide and watershed protection, for example. The scientists encourage future studies identifying forests most vulnerable to the effects of mega-disturbances. In some cases, forest managers may be able to preserve ecosystem services like carbon storage as temperate forests transition to new ecological states.

---

<a href="http://www.fs.fed.us/psw/" target="_blank" rel="noopener noreferrer">US Forest Service</a>

Toxic Algae Driving Down Home Prices On Lake Champlain. The two cottages on the shore of Lake Champlain will someday be passed down to her children but Enid Letourneau worries the algae that turns the shoreline pea-soup green each August means they won't amount to much of an inheritance.
"Would you go swimming in that? Would you let your grandchildren go swimming in there?" Letourneau said, pointing to the water around her dock this week. Toxic Algae Driving Down Home Prices On Lake Champlain
The unsightly algae smells so bad it burns her throat, she said - forcing her to keep the windows shut on a summer afternoon.


[caption id="attachment_2384195" align="alignleft" width="150"]<a href="http://cff1.greenatom.net/uploads/2015/08/29115823/algae-lake-champlain_2big_ap.jpg"><img class="size-thumbnail wp-image-2384195" src="http://cff1.greenatom.net/uploads/2015/08/29115823/algae-lake-champlain_2big_ap-150x150.jpg" alt="Credit: AP" width="150" height="150" /></a> Credit: AP[/caption]
The algae, which can be toxic to humans and dogs, prompted the town of Georgia to reduce the property values $50,000 each on 34 mostly summer camps on St. Albans Bay, including the two Letourneau and her husband own.
Letourneau figures the town didn't have a choice after nearby St. Albans Town docked the values of some other lakefront homes - but she's not happy about it.
"I was kind of looking forward to being able to leave something for my children," she said. "Maybe they'll clean it up but I don't have a lot of hope."
The toxic algae blooms that kill aquatic life and degrade the water quality on Lake Champlain have grown, fed by phosphorus-laden runoff of rain and snowmelt from farms, roads and parking lots and discharges from municipal wastewater treatment plants.
The U.S. Environmental Protection Agency this month set a new pollution reduction goal for the Vermont side of the Lake Champlain and state officials said they were already working on long-term plans to meet those goals by keeping pollutants from rivers and streams that feed the lake. EPA scientists have been working with state counterparts for years on the best way to reduce phosphorous runoff into the lake that has been increasing despite decades of efforts and tens of millions of dollars spent.
Algae can be a serious safety issue: Last summer, a bloom on Lake Erie left 400,000 people in Ohio and Michigan without safe tap water for two days. The toxin it produces can cause vomiting, diarrhea or liver damage in extreme cases.
On Lake Champlain, the Letourneaus have owned property on the lake for about 40 years and used to always swim the bay, Letourneau said. Owners of other properties, mostly seasonal camps ranging in price from $77,000 to around $221,000, said they'll take the tax break and deal with the algae as necessary.
Bob McGrath, of Burlington, said he hates to get into the water to move his dock around and if he has to he usually waits for the wind to blow the other direction to move the algae to the other side of the bay. If he and his wife want to swim, they'll boat to nearby islands outside of the bay.
Camp owner Martin Manahan said his children do the same, taking jet skis and a boat into the middle of the bay or open lake.
The lost tax revenue - about $8,000 - "is not going to make us or break us" because of other property valuations and a tax increase, said Assistant Select Board Chairman Matt Crawford.
But Town Administrator Michael McCarthy worries that the lost revenue could be an omen of things to come.Toxic Algae Driving Down Home Prices On Lake Champlain
"If we don't fix it and find a fix to it, there's nothing else that can happen except it will get larger," he said. "That's my worry."
© 2015 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.

Toxic Algae Driving Down Home Prices On Lake Champlain

Toxic Algae Driving Down Home Prices On Lake Champlain. The...

Obama To Press For Urgent Global Climate Action Next Week. With melting glaciers and rising seas as his backdrop, President Barack Obama will visit <a href="http://www.earth.com/news/group-of-alaskan-islands-may-belong-to-a-single-massive-volcano/">Alaska</a> next week to press for urgent global climate action to combat climate change, even as he carefully calibrates his message in a state heavily dependent on oil.
Obama will become the first sitting president to visit the Alaska Arctic when he travels to Kotzebue - population around 3,000 - just north of the Arctic Circle at the end of his three-day trip. He'll kick off the visit Monday with a speech to a State Department-hosted conference on climate change and the Arctic.
The unambiguous goal of the president's trip is to use dramatic and alarming changes to Alaska's climate to instill fresh urgency into his global warming agenda. Sea ice is melting, critical permafrost is thawing and Alaska's cherished glaciers are liquefying - powerful visuals that Obama hopes will illustrate the threat to natural wonders and livelihoods and serve as a global call to action.
"This is all real," Obama said in his weekly address released Saturday. "This is happening to our fellow Americans right now."
Yet Obama has taken steps that show he's cautiously navigating the competing environmental and energy interests at play. A few weeks ago, his administration gave Royal Dutch Shell a final permit to drill into oil-bearing rock off Alaska's northwest coast for the first time in more than two decades.
"The president has made great strides in protecting the Arctic, but we are really disappointed with this decision," said Nicole Whittington-Evans, Alaska director for The Wilderness Society. "This is a point where we disagree."
For many Alaskans, though, the issue comes down to dollars and cents. Both the state government and its residents rely deeply on oil revenues to stay afloat, and falling oil prices have already created a serious budget deficit.
Brian Deese, Obama's senior adviser, sought to strike a balance between Alaska's economics needs and the president's goal to eventually phase out fossil fuels. "That's a transition that is not going to happen overnight," Deese said. In the meantime, he added, "oil and gas will remain important parts of our overall energy mix."
Ahead of Obama's visit, state Republican leaders emphasized the need for more energy development and urged Obama not to exploit the state's stunning scenery for political purposes. Sen. Dan Sullivan warned that any national or ocean monument designations "will go over like a lead balloon" among Alaska's Democrats and Republicans alike.
"What there's concern about is that he's going to use Alaska as some green screen for climate change, when he doesn't take the opportunity to dig into other issues that are important to Alaskans, important to the country," Sullivan said in an interview.
Obama has been investing time on an unfinished global climate treaty that nations hope to finalize in December, as he works to secure his environmental legacy before his presidency ends. The president has pledged a U.S. cut in greenhouse gas emissions of up to 28 percent by 2030, compared to 2005 levels, and plans to use the Alaska visit to build public pressure on other nations to commit to similarly ambitious measures.
After arriving in Anchorage on Monday afternoon, Obama plans to meet with Alaska Natives before addressing the Arctic climate resilience summit, dubbed GLACIER, which involves Arctic and non-Arctic leaders, scientists, environmental advocates and the energy industry. Secretary of State John Kerry, a key player in the climate treaty talks, also plans to speak.
In an unusual presidential photo-op, Obama will travel Tuesday to Seward, on Alaska's Kenai Peninsula, where the Exit Glacier is retreating in what environmentalists say is a dramatic sign of warming temperatures. After hiking to the glacier, Obama is to board a U.S. Coast Guard vessel to tour Kenai Fjords National Park.
His visit continues Wednesday in Dillingham, in southwest Alaska, where Obama will meet with fishermen locked in an ongoing conflict with miners over plans to build a massive gold and copper mine in Bristol Bay, home to the world's largest salmon fishery. Then he'll fly north to Kotzebue, a regional hub in the Alaska Arctic, where Obama will focus on the plight of rural, native villages where livelihoods are threatened by encroaching climate change.
While in Alaska, Obama is likely to face calls from Democrats and environmentalists to restrict Arctic drilling and to renew his request to Congress to make more of the Arctic National Wildlife Refuge, or ANWR, off-limits as well. Republicans and energy advocates planned to urge the president to clear the way for more drilling.
Aside from brief campaign stops, few presidents have spent significant time in Alaska. President Warren Harding, shortly before his death in 1923, toured nine Alaska communities in three parts of the state.
---
Reach Josh Lederman on Twitter at <a href="http://twitter.com/joshledermanAP" target="_blank" rel="noopener noreferrer">http://twitter.com/joshledermanAP</a>
© 2015 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.

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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



---



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

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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



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...

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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Satellites reveal how Earth's systems are interconnected

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



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



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



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



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



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



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



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Tiger sharks are shifting poleward as temperatures rise

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

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



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



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



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



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



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



Video Credit: ESA&nbsp;



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



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Melt ponds on the Greenland Ice Sheet

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



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



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



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



Video Credit: ESA



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



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Tracking changes in Earth's water cycle

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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

[sendtonews key="6SdlLLbt0t-1988946-12187" type="single"] Today’s Video of the Day from NTU...

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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



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NASA monitors giant dust storms on Mars

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



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



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



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



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



Video Credit: ESA&nbsp;



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



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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



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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



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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



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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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