The Met Office has issued a dire warning: global warming is accelerating beyond control, pushing Earth off-track from meeting the 1.5°C (2.7°F) target set in the Paris Agreement. 



The latest data shows a rapid rise in carbon dioxide (CO2) levels and record-breaking temperatures - raising serious concerns about the future of our planet.



Scientists warn that without immediate and drastic action, we are heading toward a climate crisis that will be difficult to reverse.



<h2 class="wp-block-heading" id="h-record-breaking-year-for-global-warming">Record-breaking year for global warming</h2>



The year 2024 officially became the hottest on record, with global average <a href="https://www.earth.com/news/un-the-world-is-on-track-for-a-catastrophic-level-of-global-warming/" target="_blank" rel="noreferrer noopener">temperatures</a> exceeding 1.5°C above pre-industrial levels for the first time. This milestone highlights the increasing intensity of climate change and the urgent need for action. 



<blockquote class="wp-block-quote">
"Last week, it was confirmed that 2024 was the warmest year on record, with annual average temperatures higher than 1.5°C above pre-industrial levels for the first time," stated Professor Richard Betts, who led the <a href="https://www.metoffice.gov.uk" target="_blank" rel="noreferrer noopener">Met Office</a>’s forecast.
</blockquote>



Although this single year does not yet represent a complete failure to meet the Paris Agreement’s target - since long-term warming trends are the true measure of success - scientists warn that this marks a dangerous turning point.



While 2025 may be slightly cooler due to natural climate variations, the overall warming trend will continue unless CO2 emissions decrease dramatically.



The data aligns with findings from the Copernicus Climate Change Service (C3S), which reported that global temperatures in 2024 were 0.12°C (0.22°F) higher than in 2023, the previous record-holding year. This confirms that humanity is now dangerously close to breaching the Paris Agreement’s long-term warming limit.



<h2 class="wp-block-heading" id="h-very-large-rise-in-co2-levels">Very large rise in CO2 levels </h2>



Perhaps even more concerning than <a href="https://www.earth.com/news/2024-confirmed-as-earths-hottest-year-in-recorded-history/" target="_blank" rel="noreferrer noopener">rising temperatures</a> is the unprecedented increase in atmospheric CO2 levels. 



Measurements taken at Mauna Loa, Hawaii, revealed that CO2 concentrations rose by 3.58 parts per million (ppm) in 2024 - the fastest annual increase since records began in 1958. This increase far exceeded the Met Office’s prediction of 2.84 ppm, highlighting that emissions are outpacing even the worst-case scenarios.



Satellite data further confirmed a "very large rise" in CO2 levels globally. This increase is partly attributed to the El Niño phenomenon, which created widespread hot and dry conditions, reducing the ability of forests and ecosystems to absorb CO2. 



However, human activities - particularly the burning of fossil fuels - remain the primary driver of rising <a href="https://www.earth.com/news/rapid-surge-in-global-warming-may-have-an-unexpected-source/" target="_blank" rel="noreferrer noopener">emissions</a> and global warming.



To meet the 1.5°C goal, the Intergovernmental Panel on Climate Change (<a href="https://www.ipcc.ch" target="_blank" rel="noreferrer noopener">IPCC</a>) has stated that CO2 emissions must be reduced by 1.8 ppm per year. Instead, we are seeing an accelerating rise, making it increasingly difficult to stay within safe climate limits.



<h2 class="wp-block-heading" id="h-role-of-natural-climate-patterns">Role of natural climate patterns</h2>



Looking ahead, scientists predict that CO2 levels will continue to rise in 2025, though at a slightly slower rate. 



The Met Office estimates an increase of 2.26 ± 0.56 ppm, which is lower than the extreme rise seen in 2024. This expected decrease is linked to the transition from El Niño to La Niña conditions, which will help ecosystems absorb more CO2.



<blockquote class="wp-block-quote">
"La Niña conditions are expected to cause forests and other ecosystems to soak up more carbon than last year, temporarily slowing the atmospheric CO2 rise," explained Professor Richard Betts.
</blockquote>



While this temporary relief may slightly reduce the speed of warming, it is not nearly enough to counteract the long-term accumulation of greenhouse gases. As Betts warns, stabilizing global temperatures will require emissions to not only stop increasing but to reverse entirely.



<blockquote class="wp-block-quote">
"Stopping global warming needs the build-up of greenhouse gases in the air to come to a complete halt and then start to reduce. Large, rapid emissions cuts could limit the extent to which global <a href="https://www.earth.com/news/ancient-climate-shift-sheds-light-on-future-global-warming/" target="_blank" rel="noreferrer noopener">warming</a> exceeds 1.5°C. But this needs urgent action internationally," said Betts.
</blockquote>



<h2 class="wp-block-heading" id="h-long-term-global-warming-and-temperature-rise">Long-term global warming and temperature rise</h2>



Although natural climate variations like El Niño contribute to short-term temperature fluctuations, scientists overwhelmingly agree that human activities are the main force behind long-term global warming. 



The continued burning of coal, oil, and gas is releasing vast amounts of CO2 into the atmosphere, pushing the planet toward more extreme and unpredictable weather events.



<blockquote class="wp-block-quote">
"This record needs to be a reality check. The climate is heating to levels we've spent years trying to avoid because countries are still burning huge amounts of oil, gas and coal," noted Dr. Friederike Otto, a climate policy expert from <a href="https://www.imperial.ac.uk" target="_blank" rel="noreferrer noopener">Imperial College London</a>.
</blockquote>



This statement highlights the failure of global leaders to take sufficient action to reduce emissions. While renewable energy sources like wind and solar are expanding, they are not replacing fossil fuels quickly enough to prevent further warming.



<h2 class="wp-block-heading" id="h-dire-consequences-of-inaction">Dire consequences of inaction</h2>



If global warming continues at its current pace, the consequences will be severe. 



Rising temperatures contribute to more frequent and intense natural disasters, including heatwaves, wildfires, hurricanes, and flooding. In 2024 alone, extreme weather events linked to climate change caused devastation worldwide.



For example, the ongoing wildfires in Los Angeles serve as a grim reminder of what the future could hold if global temperatures continue to rise unchecked. Higher temperatures dry out vegetation, creating the perfect conditions for large, uncontrollable fires.



The rise of global warming also threatens food security, water supplies, and human health. Crops struggle to grow in extreme heat, while changing weather patterns lead to droughts and flooding.



Additionally, air pollution from fossil fuel combustion contributes to respiratory illnesses and premature deaths.



<h2 class="wp-block-heading" id="h-what-needs-to-happen-now">What needs to happen now?</h2>



Scientists warn that immediate action is necessary to cut greenhouse gas emissions. The shift to renewable energy is happening, but it must accelerate significantly. 



Governments, businesses, and individuals all have a crucial role to play in addressing climate change. Countries must phase out fossil fuels while expanding clean energy sources.



Protecting and restoring forests, wetlands, and oceans will help absorb more CO2. Reducing energy waste in industries, buildings, and transportation can lower emissions. 



Governments must enforce stricter regulations, support sustainable development, and invest in green technology. Public awareness is essential, as people must understand their impact and choose more sustainable lifestyles.



The world is running out of time to prevent catastrophic global <a href="https://www.earth.com/news/co2-has-regulated-earths-climate-for-millions-of-years/" target="_blank" rel="noreferrer noopener">warming</a>. The warnings from scientists are louder than ever, and the evidence is undeniable. The question remains - will humanity rise to the challenge before it’s too late?



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Global warming is accelerating beyond control as CO2 levels rise

The Met Office has issued a dire warning: global warming is accelerating beyond control, pushing Earth off-track from meeting the 1.5°C (2.7°F) target set in the Paris Agreement. The latest data shows a rapid rise in carbon dioxide (CO2) levels and record-breaking temperatures - raising serious concerns about the future of our planet. Scientists warn that without immediate and drastic action, we are heading toward a climate crisis that will be difficult to reverse. Record-breaking year for global warming The year 2024 officially became the hottest on...

Most People Are Unaware Of Dangerous Mercury Levels In Some Fish. It's midday and the white bucket balanced on the rocky shore at Mountha Uppasay's feet holds five or six white bass, moving sluggishly in the water she scooped from the Des Moines River.
She and her husband, who are immigrants from Laos, have been fishing since shortly after dawn and plan to catch enough to make a tasty stew to share with their children and grandchildren. Asked about possible health issues with the fish, Uppasay flashes a surprised look and says, "They're all safe." Most People Are Unaware Of Dangerous Mercury Levels In Some Fish
She's right, to a point. The bass are nutritious, but they probably contain dangerous mercury levels, a toxic substance especially harmful to pregnant women and children that collects in varying levels in most fish throughout the country. Limiting consumption, particularly for those in the higher risk groups, is recommended.
Uppasay's lack of awareness appears to be shared by many anglers who fish in rivers and lakes near urban areas, and it illustrates how many government-issued health warnings about fish fail to reach those who most need to hear them: low-income families and immigrants, some of whom fish daily or weekly for their family meals.
Most health advisories are posted directly on packages, like tobacco and alcohol, or displayed on billboard or TV ads. Iowa, like most states, posts information on its websites, and that's where the warnings stop.
"People are starving for information," said Joanna Burger, an ecologist at Rutgers University who has worked in several states to help minimize the problem. "People want the information, but they want to be given it in a way to make their own risk decisions."
Mercury, which occurs naturally in fish, seeps into waterways everywhere, with some local hotspots scattered across the country linked to coal-burning power plants, old mines or industries.
Studies show that up to 10 percent of women of child-bearing age have mercury levels that exceed federal standards. Mercury can be devastating for the neurological development of fetuses and children. For adults, longer-term problems include vision loss and difficulty walking.
The U.S. Environmental Protection Agency says adults can eat as much as they want of some fish, but for many species the agency recommends only a serving or two a week, less for pregnant women or children. The stricter limits are suggested for predator species like white bass - fish that eat other fish - and older, larger fish more likely to exceed 0.47 parts of mercury per million.
Environmental officials agree that immigrants and low-income people dominate many urban riverbanks and lakes where fish are likely to have higher levels.
Tong Vang, who works as a community liaison in Minnesota, said Southeast Asians in the upper Midwest are especially devoted to fishing and have an affinity for white bass, a fish similar to kinds they ate in their homeland.
Vang said he thinks many in the community have not heard the warnings or don't take them seriously.
"Some people are stubborn," Vang said.
Though mercury levels can vary, some of the most popular fish in a region can be the riskiest.
In Pennsylvania, fishermen line the banks of the Susquehanna River near York, where a top attraction is flathead catfish that can grow to 50 pounds or more.
Michael Helfrich, leader of a conservation group on the Lower Susquehanna, said he sees many immigrants casting lines.
"They don't understand that bigger is not better," he said.
On Alabama's Coosa River, volunteers have been interviewing anglers to learn how often they fish and what they catch. In an area with double-digit poverty levels, people rely on largemouth spotted bass and catfish, both predator fish, and other varieties for dinner.
"A lot of people have no idea that there is any kind of contamination in fish," said Justinn Overton, executive director of the Coosa Riverkeeper conservation group. "It just breaks my heart. The river is part of our community in Alabama."
Experts don't want to discourage people from eating fish, which contains omega-3 fatty acids that are beneficial for the heart. Still, they believe governments should do more to inform anglers about simple ways to lessen dangers. Popular low-risk fish that can be eaten frequently include sunfish, crappie and perch.
In California, especially San Francisco Bay and parts of the Sacramento River, health information is being posted in fishing areas. Parks officials in Akron, Ohio, are explaining guidelines at Asian community events and circulating advisories in four languages.
"We want people to come to the park. We want people to fish," but to understand health guidelines, said parks director Mike Johnson.
But word hasn't arrived yet for many Hmong immigrants who frequent the Des Moines River.
On this steamy summer day, several dozen anglers toss lines into the water while their families relax on blankets shaded by trees behind them.
Boun Lovan, who works for a marble installation company, said he fishes for white bass and walleye two or three times a week. For him and his family, the more he catches, the better.
"A lot of people like fish better than red meat," he said.
---
Follow Scott McFetridge at: <a href="https://twitter.com/smcfetridge" target="_blank" rel="noopener noreferrer">https://twitter.com/smcfetridge</a> .
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Most People Are Unaware Of Dangerous Mercury Levels In Some Fish

Most People Are Unaware Of Dangerous Mercury Levels In Some...

Environmental Activists Rappel Off Oregon Bridge To Stop Shell Oil Icebreaker. Environmental activists rappelled off Portland's tallest bridge early Wednesday in an effort to stop a Shell Oil icebreaker from leaving the city.
Thirteen protesters dangled from the St. Johns Bridge while another 13 remained on the bridge as lookouts. Greenpeace USA executive director Annie Leonard said the activists have enough water and food to last for days, and can hoist themselves to allow other marine traffic to pass. Environmental Activists Rappel Off <a href="http://www.earth.com/news/unequal-treatment-protestors/">Oregon</a> Bridge To Stop Shell Oil Icebreaker
The Royal Dutch Shell PLC icebreaker Fennica arrived in Portland for repairs last week. The vessel was damaged earlier this month in the Aleutian Islands when it struck an underwater obstruction, tearing a gash in its hull.
The icebreaker is a vital part of Shell's exploration and spill-response plan off Alaska's northwest coast. It protects Shell's fleet from ice and carries equipment that can stop gushing oil.
Opponents of Arctic drilling worry that the area's remoteness and rough conditions will hamper cleanup efforts should a spill occur.
"These climbers hanging on the bridge really are at this point the last thing standing between Shell's plan to drill in the Arctic and the Arctic," Leonard said.
Shell spokesman Curtis Smith said in an email the Fennica will return to Alaska once final preparations are complete.
"As for the activities of the day, we respect the choice that anyone might make to protest based on Shell's Arctic aspirations; we just ask that they do so safely and within the boundaries of the law," Smith wrote.
Environmental groups had wanted the Obama administration to reject permits sought by Shell to drill in the Chukchi Sea because of the absence of the icebreaker.
The government, however, gave Shell approval to begin limited exploratory oil drilling, with conditions. Shell can only drill the top sections of wells because the company doesn't have critical emergency response equipment on site to cap a well in case of a leak. That equipment is aboard the Fennica.
Activists hope any delay will give the Obama administration time to reconsider granting the final permit. They also want to use up days in the short window for summer drilling.
"Shell's under enormous pressure to get this thing back up there," Leonard said.
Supporters of arctic drilling say it can be conducted safely with existing technologies and that future production will help sustain the country's energy needs and limit reliance on imports.
The U.S. Geological Survey estimates the <a href="http://www.earth.com/video/the-complex-behavior-of-melting-ice-sheets/">Arctic</a> offshore reserves in the Chukchi and Beaufort seas at 26 billion barrels of recoverable oil.
Sgt. Pete Simpson, a Portland Police Bureau spokesman, said officers were monitoring the protest and no arrests had been made. The bridge remained open to vehicles, but pedestrians were told to stay off.
---
Follow Steven DuBois at <a href="http://twitter.com/pdxdub" target="_blank" rel="noopener noreferrer">http://twitter.com/pdxdub</a>
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Environmental Activists Rappel Off Oregon Bridge

Environmental Activists Rappel Off Oregon Bridge To Stop Shell Oil...

Environmentalists Protest Pacific Partnership Trade Pact In Maui. About 400 protesters blew conch shells on a Hawaii beach to demonstrate against a trade agreement being negotiated by ministers from 12 Pacific Rim nations.
The demonstrators blew into their shells in unison on Wednesday on the sand in front of the Westin Maui resort on Kaanapali Beach, where ministers were meeting this week to discuss the Trans Pacific Partnership trade pact. Environmentalists Protest <a href="http://www.earth.com/image/noumea-in-the-south-pacific-archipelago-of-new-caledonia/">Pacific</a> Partnership Trade Pact In Maui
Protest organizers say the trade agreement would benefit a few major corporations while sacrificing protections for public health, the environment, local jobs and indigenous rights.
"It's pilau, pilau, pilau," said veteran Hawaii activist Walter Ritte, using the Hawaiian word for rotten.
A former agriculture minister from Japan, Masahiko Yamada, shared how he had been fighting the agreement back home for the past five years. He led the crowd in chants of "Stop TPP" and "gambaro" or "Let's do it" in <a href="https://www.bing.com/search?q=japan&amp;cvid=261a931f8ca74a3589fbee7b4abb828b&amp;FORM=ANAB01&amp;PC=HCTS">Japanese</a>.
The agreement would lower tariffs and other trade barriers while setting labor and environmental standards for its participants. The Obama administration said the pact would boost U.S. economic growth and help keep high-quality jobs in the country by increasing exports.
The protesters blew conch shells because to Native Hawaiians have used the shell's sound to let people know something important was to occur, said event organizer Trinette Furtado.
"Today is a call to attention, to join together against this attempt to put profits over people," Furtado said in a statement.
Organizers believe they set a new world record for the number of people blowing conch shells at one time. They documented the event to submit to the Guinness Book of World Records.
Marti Townsend, director of the Sierra Club of Hawaii, said the state has some of the strongest environmental laws in the world, but they would be "gutted" if the agreement is adopted.
"We are calling on elected leaders around the world, all 12 countries, to recognize that the public interest in this situation is higher than the corporate interest," Townsend said.
The 12 nations negotiating the pact are: the United States, Australia, Brunei, Canada, Chile, Japan, Malaysia, Mexico, New Zealand, Peru, Singapore and Vietnam.
© 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.

Environmentalists Protest Pacific Partnership Trade Pact In Maui

Environmentalists Protest Pacific Partnership Trade Pact In Maui. About 400...

Researchers Tag Sources Of Soot To Find Where They Land. Source of soot that is warming Tibetan Plateau ID'd

Using a climate model that can tag sources of soot from different global regions and can track where it lands on the Tibetan Plateau, <a href="http://www.earth.com/news/research-confirms-that-covid-19-enters-the-brain/">researchers</a> have determined which areas around the plateau contribute the most soot -- and where. The model can also suggest the most effective way to reduce soot on the plateau, easing the amount of warming the region undergoes. Researchers Tag Sources Of Soot To Find Where They Land

The work, which appeared in Atmospheric Chemistry and <a href="https://www.bing.com/search?q=physics&amp;cvid=416ff4430548467e99f3bf31692e12ba&amp;FORM=ANAB01&amp;PC=HCTS">Physics</a> in June, shows that soot pollution on and above the Himalayan-Tibetan Plateau area warms the region enough to contribute to earlier snowmelt and shrinking glaciers. A major source of water, such changes could affect the people living there. The study might help policy makers target pollution reduction efforts by pinpointing the sources that make the biggest difference when cut.

"If we really want to address the issue of soot on the Tibetan Plateau," said Yun Qian, a study co-author at the Department of Energy's Pacific Northwest National Laboratory, "we need to know where we should start."

Overall, the work shows that, of worldwide sources, India's wildfires, cooking fuel and fossil fuel burning contribute the most soot to the mountain range and plateau region, followed by fossil fuel burning in China and other East Asian countries.

However, the work also zooms in on regions of the plateau. In this close up, India contributes the greatest amount of soot to the most regions, especially the Himalayas and the central Plateau. China contributes the most soot to the northeast Plateau. Finally, sources in central Asia, the Middle East and Tibet are only important to the northwest Plateau.

The researchers identified where the soot went and also determined how much warming it caused there. In addition to confirming previous work that soot causes net warming over the entire Himalayan-Tibetan Plateau region, one area stood out. Soot increased the amount of warming on the snowy northwest Plateau in the spring by more than 10 times the annual average of the entire plateau.

"Soot on snow in the northwest plateau causes more warming than all other sources in the area," said corresponding author Hailong Wang, an atmospheric scientist at PNNL. "It's bigger than the effect of greenhouse gases and soot in the atmosphere. The strong heating caused by soot on snow and in the atmosphere can change air circulation over the Plateau, leading to a broader impact on climate."

Third pole

Often called the Third Pole due to how much ice and snow accumulates there, the Himalayas and Tibetan Plateau are the source of major rivers in nearby countries and changes to them can affect the largest populations in China and India. The mass of frozen water also contributes to the global climate, which is changing as Earth's temperature rises.

Although earlier work showed soot's warming effect over the whole region, the researchers wanted to pinpoint what kind of sources contribute. The team looked specifically at fossil fuel sources, biofuel and biomass sources of soot. For example, people in the surrounding countries use much wood, grass and agricultural wastes to cook with, which the team categorized as biofuel.

To track the soot, the team developed a new way to tag the soot particles emitted from individual sources within a climate model. The method had advantages over other source-attribution methods, which either don't completely isolate contributions from particular sources or require running the model many times to turn the sources off and on one at a time. Researchers Tag Sources Of Soot To Find Where They Land

Essentially, the team "dyed" 16 sources of soot in a well-known climate model called the Community Atmosphere Model version 5, also known as CAM5. After running the model, the team compared the model's results to actual soot data taken from seven sites in the Tibetan Plateau/Himalayan region and to satellite data of snow cover to see how well it represented soot and snowfall. The model performed well, and taking into consideration the strengths and weaknesses of the model, the team focused on the soot.

While the soot tracker showed where the soot fell or where it hovered in the air above ground, the tracker also showed the path the soot took to its ending position.

"We got a vertical and horizontal view of the pathways," said Wang. "Not only where the soot came from, but also how the air moves it, and how much got removed on its path."

Soot scooting boogie

By zooming in on the plateau, the scientists got a great bit of detail, more than would have shown up on a global map. In the close up, the majority of soot that arrives in the Himalayas and the central Plateau comes from biofuel and fossil fuel burning in India; soot arriving in the northeast Plateau in all seasons and the southeast Plateau in the summer come from fossil fuel and biomass burning in China. In the northwest Plateau, emissions from central Asia and the <a href="https://www.bing.com/search?q=middle+east&amp;cvid=1c23f33f3bff4e318037eb52db1114ee&amp;FORM=ANAB01&amp;PC=HCTS">Middle East</a> also contribute significantly.

Running the computer model in this way not only showed which source sent the most soot over, but also can determine which source would make the biggest impact if emissions are cut. The soot destination that changed the most was the northwest Plateau by cuts in central Asia's fossil fuel burning. Cuts in South Asia can effectively reduce the soot level on the entire plateau, especially in the Himalayas.

"The model can be used to test how efficient it would be to cut any particular amount of worldwide emissions," said Wang. "For example, if we wanted to cut global emissions by an eighth, our results can tell us where to cut from to make the biggest reduction on the Tibetan Plateau."

The authors suggest this type of research could be helpful to policymakers interested in reducing the effects of climate change at the Third Pole.
###
This work was supported by the Department of Energy's Office of Science, China Scholarship Fund, National Basic Research Program of China. Computing experiments used DOE's Lawrence Berkeley National Laboratory's NERSC computing resources, a DOE Office of Science user facility.

Reference: R. Zhang, H. Wang, Y. Qian, P. J. Rasch, R. C. Easter, P.-L. Ma, B. Singh, J. Huang, and Q. Fu. Quantifying sources, transport, deposition, and radiative forcing of black carbon over the Himalayas and Tibetan Plateau, Atmos. Chem. Phys. 15, 6205-6223, June 8, 2015, doi:10.5194/acp-15-6205-2015.

Interdisciplinary teams at Pacific Northwest National Laboratory address many of America's most pressing issues in energy, the environment and national security through advances in basic and applied science. Founded in 1965, PNNL employs 4,300 staff and has an annual budget of more than $1 billion. It is managed by Battelle for the U.S. Department of Energy's Office of Science. As the single largest supporter of basic research in the physical sciences in the United States, the Office of Science is working to address some of the most pressing challenges of our time. For more information on PNNL, visit the PNNL News Center, or follow PNNL on Facebook, Google+, LinkedIn and Twitter.

---

<a href="http://www.pnnl.gov/news" target="_blank" rel="noopener noreferrer">Pacific Northwest National Laboratory</a>

Researchers Tag Sources Of Soot To Find Where They Land

Researchers Tag Sources Of Soot To Find Where They Land....

Filthy Rio Waters Threatens 2016 Olympics. The filthy Rio waters where Olympians will compete in swimming and boating events next summer in South America's first games are rife with human sewage and present a serious health risk for athletes, as well as for visitors to the iconic beaches of Rio de Janeiro.
An Associated Press investigation found dangerously high levels of viruses and bacteria from sewage in venues where athletes will compete in the 2016 Olympic and Paralympic water sports. Filthy Rio Waters Threatens 2016 Olympics
In the first independent comprehensive testing for both viruses and bacteria at the Olympic sites, the AP conducted four rounds of tests starting in March. The results have alarmed international experts and dismayed competitors training in Rio, some of whom have already have fallen ill with fevers, vomiting and diarrhea.
These ailments could knock an athlete out for days, potentially curtailing Olympics dreams and the years of hard training behind them.
"This is by far the worst water quality we've ever seen in our sailing careers," said Ivan Bulaja, a coach for the Austrian team, which has spent months training on the Guanabara Bay. "I am quite sure if you swim in this water and it goes into your mouth or nose that quite a lot of bad things are coming inside your body."
Sailor David Hussl has already fallen ill.
"I've had high temperatures and problems with my stomach," Hussl said. "It's always one day completely in bed and then usually not sailing for two or three days."
Water pollution has long plagued Brazil's urban areas, where most sewage isn't collected, let alone treated. In Rio, much of the waste runs through open-air ditches to fetid streams and rivers that feed the Olympic water sites and blight the city's picture postcard beaches.
Dr. Richard Budgett, the medical director for the International Olympic Committee, said after seeing the AP findings that the IOC and Brazilian authorities should stick to their program of testing only for bacteria to determine whether the water is safe for athletes, as that is the accepted norm globally.
"We've had reassurances from the World Health Organization and others that there is no significant risk to athlete health," he told the AP on the sidelines of an IOC meeting in Malaysia.
He went on to say that "there will be people pushing for all sorts of other tests, but we follow the expert advice and official advice on how to monitor water effectively."
Many water and health experts in the U.S. and Europe are pushing regulatory agencies to include viral testing in determining water quality because the majority of illnesses from recreational water activities are related to viruses, not bacteria.
Brazilian authorities pledged that a major overhaul of the city's waterways would be among the Olympics' most significant legacies. But the stench of raw sewage still greets travelers arriving at Rio's international airport. Prime beaches remain deserted because the surf is thick with putrid sludge, and periodic die-offs leave the Olympic lake littered with rotting fish.
More than 10,000 athletes hailing from over 200 countries are expected to compete in the Aug. 5-21, 2016, games. Nearly 1,400 of them will come into contact with waters contaminated by rampant sewage pollution, as they sail in the Guanabara Bay; swim off of Copacabana Beach; and canoe and row on the brackish waters of the Rodrigo de Freitas Lake. And starting next week, hundreds of athletes will take to the waters in Olympic trial events.
Brazilian officials insist the waters will be safe, but the AP testing over five months found not one venue fit for swimming or boating, according to international experts, who say it's too late for a cleanup.
"What you have there is basically raw sewage," said John Griffith, a marine biologist at the independent Southern California Coastal Water Research Project. Griffith examined the protocols, methodology and results of the AP tests. "It's all the water from the toilets and the showers and whatever people put down their sinks, all mixed up, and it's going out into the beach waters."
In the U.S., Griffith said, areas with such levels of contamination "would be shut down immediately."
Brazilian officials who oversee water quality at the Olympic sites said they are not monitoring for viruses.
But Leonardo Daemon, coordinator of water quality monitoring for the state's environmental agency, said officials are strictly following Brazilian regulations on water quality, which are all based on bacteria levels.
"What would be the standard that should be followed for the quantity of virus? Because the presence or absence of virus in the water ... needs to have a standard, a limit," he said. "You don't have a standard for the quantity of virus in relation to human health when it comes to contact with water."
Fernando Spilki, a top Brazilian virologist, carried out four rounds of viral and bacterial water testing for the AP, collecting samples at three Olympic sites.
Spilki's testing looked for three different types of human adenovirus that are typical "markers" of human sewage in <a href="http://www.earth.com/news/forest-degradation-is-more-destructive-than-deforestation-in-the-brazilian-amazon/">Brazil</a>. In addition, he tested for enteroviruses, the most common cause of upper respiratory tract infections in the young, which can also lead to brain and heart ailments. He also tested for rotavirus, the main cause of gastroenteritis globally.
The test results consistently found high counts of active and infectious human adenoviruses, which cause explosive diarrhea, violent vomiting, respiratory trouble and other illnesses.
The concentrations of the human adenoviruses were roughly equivalent to that seen in raw sewage - even at one of the least-polluted areas tested, Copacabana Beach, where marathon and triathlon swimming will take place and where many of the expected 350,000 foreign tourists may take a dip.
The AP found another Olympic site thought to have been largely cleaned up in recent years, the Rodrigo de Freitas Lake, is among the games' most polluted waters. Results ranged from 14 million adenoviruses per liter to 1.7 billion per liter.
By comparison, water quality experts who monitor beaches in Southern California become alarmed by viral counts spiking to 1,000 per liter.
"Everybody runs the risk of infection in these polluted waters," said Dr. Carlos Terra, a hepatologist and head of a Rio-based association of doctors specializing in liver disease. Terra said approximately 60 percent of Brazilian adults have been exposed to hepatitis A, primarily because of exposure to sewage.
Kristina Mena, an associate professor of public health at the University of <a href="https://www.bing.com/search?q=texas+&amp;qs=n&amp;form=QBRE&amp;sp=-1&amp;pq=texas+&amp;sc=8-6&amp;sk=&amp;cvid=1C126CEDCC714CC58F925C155940BB64">Texas</a> Health Science Center at Houston and an expert in water risk assessment, examined the AP data and estimated international athletes at all water venues would have a 99 percent chance of being infected by the pathogens if they ingested just three teaspoons of water, although this doesn't automatically mean a person would fall ill. That depends on immunity and many other factors.
Brazilians are exposed from childhood and build up immunities. But foreign athletes and tourists won't have that protection.
Dr. Alberto Chebabo, who heads Rio's Infectious Diseases Society, warned that all foreigners heading to Rio for the Olympics, whether athletes or tourists, should get vaccinated against hepatitis A. The U.S. Centers for Disease Control and Prevention also recommends travelers to Brazil get vaccinated for typhoid.
---
Associated Press sports writer Stephen Wade and senior producer Yesica Fisch contributed to this report from Rio, sports writer Stephen Wilson contributed from Kuala Lumpur, Malaysia.
---
Brad Brooks on Twitter: <a href="http://www.twitter.com/bradleybrooks" target="_blank" rel="noopener noreferrer">www.twitter.com/bradleybrooks</a>
Jenny Barchfield on Twitter: <a href="http://www.twitter.com/jennybarchfield" target="_blank" rel="noopener noreferrer">www.twitter.com/jennybarchfield</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.

Filthy Rio Waters Threatens 2016 Olympics

Filthy Rio Waters Threatens 2016 Olympics. The filthy Rio waters...

Scientists Study Negative Effects Of Climate Change On Antarctic Fish. Scientists at University of California Davis and San Francisco State University have discovered that the combination of elevated levels of carbon dioxide and an increase in ocean water temperature has a significant impact on survival and development of the Antarctic dragonfish (Gymnodraco acuticeps). The research article was published today in the journal Conservation Physiology. Scientists Study Negative Effects Of Climate Change On Antarctic Fish

The study, which was the first to investigate the response to warming and increased pCO2 (partial pressure of carbon dioxide) in a developing <a href="http://www.earth.com/video/the-complex-behavior-of-melting-ice-sheets/">Antarctic</a> fish, assessed the effects of near-future ocean warming and acidification on early embryos of the naked dragonfish, a shallow benthic spawner exclusive to the circumpolar Antarctic. As the formation of their embryos takes longer than many species (up to ten months), this makes them particularly vulnerable to a change in chemical and physical conditions.

The survival and metabolism of the dragonfish embryo was measured over time in two different temperatures and three pCO2 levels over a three-week period, which allowed the researchers to assess potential vulnerability of developing dragonfish to future ocean scenarios. The results showed that a near-future increase in ocean temperature as well as acidification have the potential to significantly alter the physiology and development of Antarctic fish. One of the article's authors, Assistant Professor Anne Todgham, explained that "temperature will probably be the main driver of change, but increases in pCO2 will also alter embryonic physiology, with responses dependent on water temperature."

Professor Todgham went on to say: "Dragonfish embryos exhibited a synergistic increase in mortality when elevated temperature was coupled with increased pCO2 over the course of the three week experiment. While we predictably found that temperature increased embryonic development, altered development due to increased pCO2 was unexpected." These unique findings show that single stressors alone may not be sufficient to predict the effects on early development of fish, as the negative effects of increased pCO2 may only manifest at increased temperatures. They also show that fish may differ from other marine invertebrate embryos in how they respond to pCO2.

The faster development of the embryos in warmer and more acidic waters could be bad news for the dragonfish. Hatching earlier, at the start of the dark winter months when limited food resources are available, has the potential to limit growth during critical periods of development. Furthermore, impacts to survival would reduce numbers of embryos that hatch and could impact dragonfish abundance.

---

<a href="http://www3.oup.co.uk/jnls" target="_blank" rel="noopener noreferrer">Oxford University Press</a>

Scientists Study Negative Effects Of Climate Change On Antarctic Fish

Scientists Study Negative Effects Of Climate Change On Antarctic Fish....

California Rain Debt Equal to Average Full Year of Precipitation. A new NASA study has concluded California rain debt is about 20 inches of precipitation between 2012 and 2015 -- the average amount expected to fall in the state in a single year. The deficit was driven primarily by a lack of air currents moving inland from the <a href="http://www.earth.com/news/deep-pacific-little-ice-age/">Pacific Ocean</a> that are rich in water vapor.California Rain Debt Equal to Average Full Year of Precipitation

In an average year, 20 to 50 percent of California's precipitation comes from relatively few, but extreme events called atmospheric rivers that move from over the Pacific Ocean to the California coast.

"When they say that an atmospheric river makes landfall, it's almost like a hurricane, without the winds. They cause extreme precipitation," said study lead author Andrey Savtchenko at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Savtchenko and his colleagues examined data from 17 years of satellite observations and 36 years of combined observations and model data to understand how precipitation has varied in California since 1979. The results were published Thursday in the Journal of Geophysical Research: Atmospheres, a journal of the American Geophysical Union.

The state as a whole can expect an average of about 20 inches of precipitation each year, with regional differences. But, the total amount can vary as much as 30 percent from year to year, according to the study.

In non-drought periods, wet years often alternate with dry years to balance out in the short term. However, from 2012 to 2014, California accumulated a deficit of almost 13 inches, and the 2014-2015 wet season increased the debt another seven inches, for a total 20 inches accumulated deficit during the course of three dry years.

The majority of that precipitation loss is attributed to a high-pressure system in the atmosphere over the eastern Pacific Ocean that has interfered with the formation of atmospheric rivers since 2011.

Atmospheric rivers occur all over the world. They are narrow, concentrated tendrils of water vapor that travel through the atmosphere similar to, and sometimes with, the winds of a jet stream. Like a jet stream, they typically travel from west to east. The ones destined for California originate over the tropical Pacific, where warm ocean water evaporates a lot of moisture into the air. The moisture-rich atmospheric rivers, informally known as the Pineapple Express, then break northward toward North America.

Earlier this year, a NASA research aircraft participated in the CalWater 2015 field campaign to improve understanding of when and how atmospheric rivers reach California.

Some of the water vapor rains out over the ocean, but the show really begins when an atmospheric river reaches land. Two reached California around Dec. 1 and 10, 2014, and brought more than three inches of rain, according to NASA's Tropical Rainfall Measuring Mission (TRMM) multi-satellite dataset. The inland terrains, particularly mountains, force the moist air to higher altitudes where lower pressure causes it to expand and cool. The cooler air condenses the concentrated pool of water vapor into torrential rains, or snowfall as happens over the Sierra Nevada Mountains, where water is stored in the snowpack until the spring melt just before the growing season.

The current drought isn't the first for California. Savtchenko and his colleagues recreated a climate record for 1979 to the present using the Modern-Era Retrospective Analysis for Research and Applications, or MERRA. Their efforts show that a 27.5-inch deficit of rain and snow occurred in the state between 1986 and 1994.

"Drought has happened here before. It will happen again, and some research groups have presented evidence it will happen more frequently as the planet warms," Savtchenko said. "But, even if the climate doesn't change, are our demands for fresh water sustainable?"

The current drought has been notably severe because, since the late 1980s, California's population, industry and agriculture have experienced tremendous growth, with a correlating growth in their demand for water. Human consumption has depleted California's reservoirs and groundwater reserves, as shown by data from NASA's Gravity Recovery and Climate Experiment (GRACE) mission, leading to mandatory water rationing.

"The history of the American West is written in great decade-long droughts followed by multi-year wet periods," said climatologist Bill Patzert at <a href="https://www.bing.com/search?q=nasa&amp;cvid=8af11f62c44e411ba8f1a9a6dc7b003e&amp;FORM=ANAB01&amp;PC=HCTS">NASA's</a> Jet Propulsion Laboratory in Pasadena, California. He was not involved in the research. "Savtchenko and his team have shown how variable California rainfall is."

According to Patzert, this study added nuance to how scientists may interpret the atmospheric conditions that cause atmospheric rivers and an El Niño's capacity to bust the drought. Since March, rising sea surface temperatures in the central equatorial Pacific have indicated the formation of El Niño conditions. El Niño conditions are often associated with higher rainfall to the western United States, but it's not guaranteed.

Savtchenko and his colleagues show that El Niño contributes only six percent to California's precipitation variability and is one factor among other, more random effects that influence how much rainfall the state receives. While it's more likely El Niño increases precipitation in California, it's still possible it will have no, or even a drying, effect.

A strong El Niño that lasts through the rainy months, from November to March, is more likely to increase the amount of rain that reaches California, and Savtchenko noted the current El Niño is quickly strengthening.

The National Oceanic and Atmospheric Administration (NOAA), which monitors El Niño events, ranks it as the third strongest in the past 65 years for May and June. Still, it will likely take several years of higher-than-normal rain and snowfall to recover from the current drought.

"If this El Niño holds through winter, California's chances to recoup some of the precipitation increase. Unfortunately, so do the chances of floods and landslides," Savtchenko said. "Most likely the effects would be felt in late 2015-2016."

For more information about NASA's Precipitation Measurement missions, visit:

<a href="http://pmm.nasa.gov/" target="_blank" rel="noopener noreferrer">http://pmm.nasa.gov</a>

California Rain Debt Equal to Average Full Year of Precipitation

California Rain Debt Equal to Average Full Year of Precipitation....

Butterflies Hold Clues To Cheaper Solar Energy. The humble butterfly could hold the key to unlocking new techniques to make solar energy cheaper and more efficient, pioneering new research has shown.

A team of experts from the University of Exeter has examined new techniques for generating photovoltaic (PV) energy - or ways in which to convert light into power.

They showed that by mimicking the v-shaped posture adopted by <a href="http://www.earth.com/news/broccoli-and-cabbage-reduce-the-risk-of-heart-attack/">Cabbage</a> White butterflies to heat up their flight muscles before take-off, the amount of power produced by solar panels can increase by almost 50 per cent.

Crucially, by replicating this 'wing-like' structure, the power-to-weight ratio of the overall solar energy structure is increased 17-fold, making it vastly more efficient.Butterflies Hold Clues To Cheaper Solar Energy

The research by the team from both the Environment and Sustainability Institute (ESI) and the Centre for Ecology and Conservation, based at the University of Exeter's Penryn Campus in Cornwall, is published in the leading scientific journal, Scientific Reports.

Professor Tapas Mallick, lead author of the research said: "Biomimicry in engineering is not new. However, this truly multidisciplinary research shows pathways to develop low cost solar power that have not been done before."

The Cabbage White butterflies are known to take flight before other butterflies on cloudy days - which limit how quickly the insects can use the energy from the sun to heat their flight muscles.

This ability is thought to be due to the v-shaped posturing, known as reflectance basking, they adopt on such days to maximise the concentration of solar energy onto their thorax, which allows for flight.

Furthermore, specific sub-structures of the butterflies' wings allow the light from the sun to be reflected most efficiently, ensuring that the flight muscles are warmed to an optimal temperature as quickly as possible.

The team of scientists therefore investigated how to replicate the wings to develop a new, lightweight reflective material that could be used in solar energy production.

The team found that the optimal angle by which the butterfly should hold its wings to increase temperature to its body was around 17 degrees, which increased the temperature by 7.3 degrees Centigrade compared to when held flat.

They also showed that by replicating the simple mono-layer of scale cells found in the butterfly wings in solar energy producers, the could vastly improve the power-to-weight rations of future solar concentrators, making them significantly lighter and so more efficient.

Professor Richard ffrench-Constant, who conducts world-leading research into butterfly mimicry at the University of Exeter, said: "This proves that the lowly Cabbage White is not just a pest of your cabbages but actually an insect that is an expert at harvesting solar energy."

The paper, White butterflies as solar photovoltaic concentrators, by Katie Shanks, Dr Senthilarasu Sundaram, Professor Richard ffrench-Constant and Professor Tapas Mallick from the University of Exeter, is available online.

---

<a href="http://www.exeter.ac.uk/" target="_blank" rel="noopener noreferrer">University of Exeter</a>

Butterflies Hold Clues To Cheaper Solar Energy

Butterflies Hold Clues To Cheaper Solar Energy. The humble butterfly...

Triathletes Ignore Warnings And Swim In Polluted Rio Copacabana Beach Waters. Triathletes swam in waters off Copacabana Beach Friday ahead of weekend Olympic test events, despite published warnings that water in the area was "unfit" for swimming.
The website of the Rio de Janeiro environmental agency said the water, which has been declared unfit ten previous times this year, was unsafe based on the results of a Monday water test.
Officials publicly insisted athletes were safe and stuck to the competition schedule. Later in the day, Rodrigo Garcia, the sports director for the local Olympic organizing committee, said that new, unpublished water test results show that the area is suitable for the competition, but provided no details on the results. The Rio environmental agency didn't respond to requests for comment.
The situation prompted new concern about Rio's polluted waters. On Thursday, The Associated Press released the results of a five-month investigation that showed that Olympic venues are rife with disease-causing viruses and bacteria.
The AP study showed that the spot where athletes were entering the water on Copacabana Beach had a minimal reading of over 2 million human adenovirus per liter - that's 2,000 times the reading that water experts in the U.S. say would be considered highly alarming if seen on beaches in the U.S. or Europe. At the high end, Copacabana registered 49 million adenoviruses per liter in the AP study.
Human adenovirus multiply in the intestinal and respiratory tracts of people. These are viruses that are known to cause respiratory and digestive illnesses, including explosive diarrhea and vomiting, but can also lead to more serious heart, brain and other diseases.
More than 150 athletes are competing in an Olympic qualifier and Paratriathlon event beginning Saturday. Teams gathered on Copacabana Beach said the International Triathlon Union (ITU) gave them guarantees the water was safe.
"The information we have is that it's safe to swim," said Amanda Duke, team manager for the U.S. paratriathlon team.
But officials with the group may consider pushing for expanded testing of Rio's waters, said Shin Otsuka, executive board member of ITU. Currently, tests evaluate bacteria, but not viruses.
"The ITU has contracted with the local organizing committee to conduct the water-quality tests, and we trust the results," Shin Otsuka, executive board member of the International Triathlon Union, said through an interpreter. "The outcome of the testing has met the standards."
But "we are aware that at other bays and lakes (in Rio) that the virus situation is terrible," Otsuka said.
Athletes said that the conditions of the water appeared better than they were expecting. But water experts and the government's own pollution monitoring officials all note that sewage pollution typically isn't something that can be seen by the naked eye.
Because conditions of ocean waters tend to be volatile, it is difficult to determine just how much of a risk athletes faced swimming in the water on Friday, said David Zee, an oceanography professor at Rio's state university.
"The fluctuation depends on the tide. Every 12 hours we have a high tide and a low tide. For sure during high tide the water quality is much better than in the low tide," he said. Other factors such as winds, temperature and whether or not it rained recently can also affect water quality.
But "if the test was done and the water was considered unfit, without a doubt there's a certain risk."
The Rio de Janeiro state government and the state environmental agency in press releases blasted the AP report as being alarmist and said it was unfair to judge Rio's waters based on viral counts, limits of which are not designated in <a href="https://www.bing.com/search?q=brazil&amp;cvid=5d2e5966f2a1468683f33df519d199e2&amp;FORM=ANAB01&amp;PC=HCTS">Brazilian</a> legislation. They are also not set limits in the U.S. or the EU. The agency also questioned the qualifications of the laboratory where the AP samples were analyzed.
Zee, the oceanography professor, rejected the government's response, saying that in Brazil "it's natural that the authorities react saying that `everything is fine,' but everything is not fine." Triathletes Ignore Warnings And Swim In Polluted Rio Copacabana Beach Waters
Zee, who has long researched pollution in Guanabara Bay, added that the AP testing "was done in a trustworthy lab."
The area that was ruled unfit by the Rio environmental agency for swimming earlier this week was based levels of fecal coliforms, which are single-celled organisms that live in the intestines of humans and animals. Fecal coliforms can suggest the presence of cholera, dysentery, hepatitis A and typhoid.
Costa Rican triathlete Leonardo Chacon said he doesn't do anything differently to protect his body before going into the water in Rio, but plans to take anti-parasitic pills after he leaves to make sure he doesn't get sick. Those pills would not protect him against viruses.
With the Olympics a year away, he felt the risk was worth it.
"We know we are exposed to viruses, maybe to health problems later, but in my case, I have invested so much to prepare myself for this and I want this to happen because I can't recuperate this investment any other way other than competing and winning the points that I need to win."
---
Associated Press writers Jenny Barchfield and Brad Brooks contributed to this report.
---
Follow Brad Brooks on Twitter: <a href="http://www.twitter.com/bradleybrooks" target="_blank" rel="noopener noreferrer">http://www.twitter.com/bradleybrooks</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.

Triathletes Ignore Warnings And Swim In Polluted Rio Copacabana Beach Waters

Triathletes Ignore Warnings And Swim In Polluted Rio Copacabana Beach...

Alaska's Scorched Landscape Proves Global Warming's Far-Reaching Effects. Some researchers say Alaska's especially hot wildfire season is proof of global warming's far reaching effects.

Alaska was on pace for a record-breaking year of wildfires, but an uptick in precipitation has cooled things.

Even if<a href="http://www.earth.com/image/fires-have-scorched-half-of-australias-fraser-island/"> fires</a> have died down in recent days, the evidence of the state's combustible summer is still readily apparent -- even from space.
<div class="ad_slot"></div>
A newly acquired false-color photo take by Operational Land Imager, the camera on NASA's Landsat 8 satellite, shows the damage done by the Tanana fires in central <a href="https://www.bing.com/search?q=alaska&amp;cvid=7a27a516b1e6498aa1f2dbab79615480&amp;FORM=ANAB01&amp;PC=HCTS">Alaska</a>.

Though recently quelled by rain, the Tanana fires burned for much of June, forcing the town's 300 residents to evacuate. As evidenced by the aerial image, the fires burned 496,000 acres. The flames' scar can be seen in brown. Alaska's Scorched Landscape Proves Global Warming's Far-Reaching Effects

No other group of fires accounted for so much damage. Of the nearly five million acres burned by wildfires in Alaska so far in 2015, the Tanana fires account for 10 percent of the damage.

Some researchers say Alaska's especially hot wildfire season is evidence of global warming's far reaching effects.

"Earlier in the spring, the state faced a record-breaking heat wave," NASA <a class="tpstyle" href="http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=86311&amp;src=eorss-nh" target="_blank" rel="noopener noreferrer">officials wrote</a>in a blog post. "On average, Alaska has warmed by 3.4 degrees Fahrenheit (1.8 degrees Celsius) since the 1950s, about twice the national average."

Not only are the increasingly intense fires the result of global warming, researchers say, but they also may be facilitating the release of large amounts of sequestered carbon -- further exacerbating the greenhouse gas effect.

---

Credit: UPI

Alaska's Scorched Landscape Proves Global Warming's Far-Reaching Effects

Alaska's Scorched Landscape Proves Global Warming's Far-Reaching Effects. Some researchers...

City Trees In California Are Being Neglected During Drought. As Californians and the communities they live in cut back water use and let lawns turn brown, arborists and state officials are worrying about a potentially dangerous ripple effect: City trees going neglected and becoming diseased or even falling.

With cities ordered to reduce water use by 25 percent during the state's four-year drought, many residents are turning off sprinklers - not realizing that trees can be permanently damaged by a sudden reduction in the amount of water they receive.

"You don't want to be cutting back the water to the trees," said Ruben Green, an arborist with Evergreen Arborist Consultants in Los Angeles. "The tree can't adjust."

[caption id="attachment_2383329" align="alignleft" width="150"]<a href="http://cff1.greenatom.net/uploads/2015/08/01152016/trees-city-california-drought_2big_ap.jpg"><img class="size-thumbnail wp-image-2383329" src="http://cff1.greenatom.net/uploads/2015/08/01152016/trees-city-california-drought_2big_ap-150x150.jpg" alt="Volunteer attempting to save a city tree in California. Credit: AP" width="150" height="150" /></a> Volunteer attempting to save a city tree in California. Credit: AP[/caption]

Across the state, 12 million trees died over the past year due to lack of water, according to the U.S. Forest Service. While the bulk of those deaths occurred outside urban areas, conservationists and officials are now focusing on cities, where mandated water reductions are becoming visible in drying limbs and scorched leaves.

Fears that parched trees could pose a danger were heightened this week when a 75-year-old, 75-foot-tall pine tree fell on a group of kids from a camp at a Southern California children's museum, leaving a boy and girl hospitalized with serious injuries. An independent arborist and another from the city of Pasadena are conducting an investigation into the cause, which has not been determined to be drought-related.

Green visited the site of Tuesday's tree collapse and said it appeared unlikely the drought was to blame because the area around the tree looked well irrigated and its root system appeared compromised - a sign of rot, decay or injury, not necessarily the drought.

Still, the collapse highlighted concerns about the health of urban trees. Los Angeles alone has more than 25 square miles of parks and some 327,000 trees.

[caption id="attachment_2383330" align="alignleft" width="150"]<a href="http://cff1.greenatom.net/uploads/2015/08/01152023/trees-city-california-drought_3big_ap.jpg"><img class="size-thumbnail wp-image-2383330" src="http://cff1.greenatom.net/uploads/2015/08/01152023/trees-city-california-drought_3big_ap-150x150.jpg" alt="Dead city tree in California. Credit: AP" width="150" height="150" /></a> Dead city tree in California. Credit: AP[/caption]

Green and other arborists said they have seen an increase in the number of diseased trees in the city. As they get less water, they become more prone to illness caused by pests. In addition to bark beetles, Green has seen a newer pest drilling tunnels in the trunks of "dozens and dozens of trees."

Arborists say the number of falling trees and limbs does not appear to have risen in Los Angeles, but there are concerns that could be next. They also are worried that if a strong El Nino brings a wet California winter, already distressed trees will collapse when a storm hits.

"We're really right on the brink of starting to face more serious issues," said Cindy Blain, executive director of California ReLeaf, a nonprofit network of urban and community foresting groups around the state. "This is a critical time."

A new six-person crew removes potentially hazardous trees from Los Angeles parks. So far this year, it has moved out 550 trees - surpassing the 300 removed in an average year.

"They are starting to fail due to the drought, and we want to make sure these trees don't potentially pose a hazard to the public," said Laura Baurenfeind, principal forester with the city parks department.

Turf areas in city parks are being watered three times a week, down from at least five when drought regulations were not in place. To help nearby trees compensate, the city and nonprofits are installing makeshift basins to filter water to trees.

Meanwhile, a public education campaign is underway. California ReLeaf has partnered with Save Our Water, a coalition of the California Department of Water Resources and Association of California Water Agencies, to better inform residents about proper tree care during the drought.

Blain said many of the people she's spoken with say they have forgotten about their trees or gotten worried and began watering at the tree's base. Trees should be watered from the edge of their canopy.

If a tree goes too long without enough water, it will become unable to soak up liquid at all.

Like many Californians, Bruce Birkett has reduced lawn watering at his childhood home in Los Angeles in response to the drought. Recently, though, he's watched in grief as the giant cedar in the front yard became brittle and brown. City trees are going neglected and becoming diseased or even falling.

"That was hard," he said, "watching this lovely tree looking poor."

---

Follow Christine Armario on Twitter: http://www.twitter.com/cearmario .

© 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.

City Trees In California Are Being Neglected During Drought

City Trees In California Are Being Neglected During Drought. As...

City Trees In California Are Being Neglected During Drought. As Californians and the communities they live in cut back water use and let lawns turn brown, arborists and state officials are worrying about a potentially dangerous ripple effect: City trees going neglected and becoming diseased or even falling.

With cities ordered to reduce water use by 25 percent during the state's four-year drought, many residents are turning off sprinklers - not realizing that trees can be permanently damaged by a sudden reduction in the amount of water they receive.

"You don't want to be cutting back the water to the trees," said Ruben Green, an arborist with Evergreen Arborist Consultants in Los Angeles. "The tree can't adjust."

[caption id="attachment_2383329" align="alignleft" width="150"]<a href="http://cff1.greenatom.net/uploads/2015/08/01152016/trees-city-california-drought_2big_ap.jpg"><img class="size-thumbnail wp-image-2383329" src="http://cff1.greenatom.net/uploads/2015/08/01152016/trees-city-california-drought_2big_ap-150x150.jpg" alt="Volunteer attempting to save a city tree in California. Credit: AP" width="150" height="150" /></a> Volunteer attempting to save a city tree in California. Credit: AP[/caption]

Across the state, 12 million trees died over the past year due to lack of water, according to the U.S. Forest Service. While the bulk of those deaths occurred outside urban areas, conservationists and officials are now focusing on cities, where mandated water reductions are becoming visible in drying limbs and scorched leaves.

Fears that parched trees could pose a danger were heightened this week when a 75-year-old, 75-foot-tall pine tree fell on a group of kids from a camp at a Southern California children's museum, leaving a boy and girl hospitalized with serious injuries. An independent arborist and another from the city of Pasadena are conducting an investigation into the cause, which has not been determined to be drought-related.

Green visited the site of Tuesday's tree collapse and said it appeared unlikely the drought was to blame because the area around the tree looked well irrigated and its root system appeared compromised - a sign of rot, decay or injury, not necessarily the drought.

Still, the collapse highlighted concerns about the health of urban trees. Los Angeles alone has more than 25 square miles of parks and some 327,000 trees.

[caption id="attachment_2383330" align="alignleft" width="150"]<a href="http://cff1.greenatom.net/uploads/2015/08/01152023/trees-city-california-drought_3big_ap.jpg"><img class="size-thumbnail wp-image-2383330" src="http://cff1.greenatom.net/uploads/2015/08/01152023/trees-city-california-drought_3big_ap-150x150.jpg" alt="Dead city tree in California. Credit: AP" width="150" height="150" /></a> Dead city tree in California. Credit: AP[/caption]

Green and other arborists said they have seen an increase in the number of diseased trees in the city. As they get less water, they become more prone to illness caused by pests. In addition to bark beetles, Green has seen a newer pest drilling tunnels in the trunks of "dozens and dozens of trees."

Arborists say the number of falling trees and limbs does not appear to have risen in Los Angeles, but there are concerns that could be next. They also are worried that if a strong El Nino brings a wet California winter, already distressed trees will collapse when a storm hits.

"We're really right on the brink of starting to face more serious issues," said Cindy Blain, executive director of California ReLeaf, a nonprofit network of urban and community foresting groups around the state. "This is a critical time."

A new six-person crew removes potentially hazardous trees from Los Angeles parks. So far this year, it has moved out 550 trees - surpassing the 300 removed in an average year.

"They are starting to fail due to the drought, and we want to make sure these trees don't potentially pose a hazard to the public," said Laura Baurenfeind, principal forester with the city parks department.

Turf areas in city parks are being watered three times a week, down from at least five when drought regulations were not in place. To help nearby trees compensate, the city and nonprofits are installing makeshift basins to filter water to trees.

Meanwhile, a public education campaign is underway. California ReLeaf has partnered with Save Our Water, a coalition of the California Department of Water Resources and Association of California Water Agencies, to better inform residents about proper tree care during the drought.

Blain said many of the people she's spoken with say they have forgotten about their trees or gotten worried and began watering at the tree's base. Trees should be watered from the edge of their canopy.

If a tree goes too long without enough water, it will become unable to soak up liquid at all.

Like many Californians, Bruce Birkett has reduced lawn watering at his childhood home in Los Angeles in response to the drought. Recently, though, he's watched in grief as the giant cedar in the front yard became brittle and brown.

"That was hard," he said, "watching this lovely tree looking poor."

---

Follow Christine Armario on Twitter: http://www.twitter.com/cearmario .

© 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



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



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Designing crops that can beat the heat

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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Remote sensing will revolutionize the way we monitor trees

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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Lesotho: Africa's "Kingdom in the Sky"

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



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



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



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



Video Credit: NASA Goddard



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



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Wetlands are a major source of methane emissions

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



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



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



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



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



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



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



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



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



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



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The rapid retreat of the Columbia Glacier

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



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



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



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



Video/ Image Credit: NASA Goddard



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



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2022 illustrated the consequences of a warming climate

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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Satellites reveal how Earth's systems are interconnected

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

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



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



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



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



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



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



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



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Tiger sharks are shifting poleward as temperatures rise

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

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



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



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



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



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



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



Video Credit: ESA&nbsp;



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



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Melt ponds on the Greenland Ice Sheet

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



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



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



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



Video Credit: ESA



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



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Tracking changes in Earth's water cycle

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



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



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



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



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



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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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Mysterious "spoke season" captured on Saturn

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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



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Plants help remove heavy metals from contaminated soil

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



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



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



Video Credit: American Chemical Society&nbsp;



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



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Weeds are becoming increasingly resistant to herbicides

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



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



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



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



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



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



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



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NASA monitors giant dust storms on Mars

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



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



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



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



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



Video Credit: ESA&nbsp;



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



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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



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

Kangerlussuaq Glacier on the Greenland ice sheet

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



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



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



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



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



Video Credit: ESA



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



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

Ocean heat influences regional climate

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



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



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



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



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



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



Image/ Video Credit: ESA



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

Monitoring the dynamic shape of the sea surface

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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

[sendtonews key="u0TYxxqfF7-2186404-12187" type="single"] Today’s Video of the Day from NASA’s...