Scientists have searched for alien life for years, but space is huge, and technology has limits, making it hard to find answers. Traditionally, researchers have focused on finding planets similar to Earth, believing that conditions mirroring our own would be the best place to look for life.



However, a new study suggests that an entirely different type of planet could provide clearer <a href="https://www.earth.com/news/new-super-earth-hd-20794-found-just-20-light-years-away-is-best-target-yet-for-alien-life/" target="_blank" rel="noreferrer noopener">evidence of living organisms</a>.



Instead of focusing on Earth-like planets, scientists have identified a unique biosignature gas that could reveal life in environments that are vastly different from our own.



This discovery shifts the search toward larger, ocean-covered planets with thick hydrogen atmospheres, known as hycean planets, where certain microbes could potentially thrive.



<h2 class="wp-block-heading" id="h-gases-could-be-key-indicators">Gases could be key indicators</h2>



The recent study, led by researchers from the <a href="https://www.ucr.edu/" target="_blank" rel="noreferrer noopener">University of California, Riverside</a>, explored the unexpected gases that may signify life on exoplanets.



The research was focused on methyl halides, compounds made of a carbon and three hydrogen atoms bonded to a halogen, such as chlorine or bromine. 



On Earth, these gases are produced by bacteria, marine algae, fungi, and certain plants.



<h2 class="wp-block-heading" id="h-hycean-planets-and-extraterrestrial-life">Hycean planets and extraterrestrial life</h2>



Detecting these biosignatures presents challenges. Exoplanets similar to Earth are too small and dim for the James Webb Space Telescope (<a href="https://science.nasa.gov/mission/webb/" target="_blank" rel="noreferrer noopener">JWST</a>) to observe effectively. 



Instead, researchers suggest targeting hycean planets, which are larger and in orbit around small red stars.



These bodies are covered in deep oceans, and enveloped in thick hydrogen atmospheres. Though humans cannot survive on these <a href="https://www.earth.com/news/if-aliens-could-detect-earth-what-would-they-see/" target="_blank" rel="noreferrer noopener">planets</a>, some microbes might.



“Unlike an Earth-like planet, where atmospheric noise and telescope limitations make it difficult to detect biosignatures, hycean planets offer a much clearer signal,” explained Eddie Schwieterman, <a href="https://www.ucr.edu" target="_blank" rel="noreferrer noopener">UCR</a> astrobiologist and co-author of the paper .



<h2 class="wp-block-heading" id="h-practical-approach-to-finding-life">Practical approach to finding life</h2>



Scientists believe looking for methyl halides on hycean planets is a practical strategy, given current technology.



“Oxygen is currently difficult or impossible to detect on an Earth-like planet. However, methyl halides on hycean worlds offer a unique opportunity for detection with existing technology,” said Michaela Leung, UCR planetary scientist and first author of the paper.



Finding these gases could also be more efficient than searching for other <a href="https://www.earth.com/news/finding-alien-life-may-be-as-simple-as-watching-microbes-move/" target="_blank" rel="noreferrer noopener">biosignatures</a>.



“One of the great benefits of looking for methyl halides is you could potentially find them in as few as 13 hours with James Webb. That is similar or lower, by a lot, to how much telescope time you’d need to find gases like oxygen or methane,” Leung said. 



“Less time with the telescope means it’s less expensive.”



<h2 class="wp-block-heading" id="h-detecting-life-from-vast-distances">Detecting life from vast distances</h2>



Methyl halides exist on Earth in small amounts, but hycean planets could have atmospheric conditions that allow these gases to accumulate. This makes detection easier from vast distances.



“These microbes, if we found them, would be anaerobic. They’d be adapted to a very different type of environment, and we can’t really conceive of what that looks like, except to say that these gases are a plausible output from their metabolism,” Schwieterman said.



The study builds on previous research into biosignature gases, including dimethyl sulfide. 



Methyl halides stand out due to their strong absorption of infrared light and their ability to accumulate in hydrogen-rich <a href="https://www.earth.com/news/four-small-planets-discovered-orbiting-the-nearest-single-star-to-earth-barnards-star/" target="_blank" rel="noreferrer noopener">atmospheres</a>.



While JWST is currently the most powerful tool for this search, future missions could enhance detection. 



The proposed <a href="https://eu-life.eu/about/mission-values" target="_blank" rel="noreferrer noopener">European LIFE mission</a>, expected to launch in the 2040s, may confirm these biosignatures in less than a day.



“If we start finding methyl halides on multiple planets, it would suggest that microbial life is common across the universe,” Leung said. 



“That would reshape our understanding of life’s distribution and the processes that lead to the origins of life.”



<h2 class="wp-block-heading" id="h-expanding-the-search-for-extraterrestrial-life">Expanding the search for extraterrestrial life</h2>



Researchers plan to extend their investigations to other planetary types and biosignature gases. 



They have already studied gases from extreme environments on Earth, such as the Salton Sea, which emits halogenated compounds like chloroform.



“We want to get measurements of other things produced in extreme <a href="https://www.earth.com/news/dark-oxygen-in-the-deep-sea-may-hold-clues-about-alien-life/" target="_blank" rel="noreferrer noopener">environments</a> on Earth, which could be more common elsewhere,” Schwieterman said.



Direct sampling of exoplanet atmospheres remains out of reach, but advances in telescope technology and observational techniques could change that.



“Humans are not going to visit an exoplanet anytime soon,” Schwieterman said. “But knowing where to look, and what to look for, could be the first step in finding life beyond Earth.”



The study is published in <a href="https://iopscience.iop.org/article/10.3847/2041-8213/adb558" target="_blank" rel="noreferrer noopener">The Astrophysical Journal Letters</a>. 



Image Credit: NASA, ESA, CSA, Joseph Olmsted/STScI



-----



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



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



-----

Weird planets may be the best place to look for strange alien life, according to new research

Scientists have searched for alien life for years, but space is huge, and technology has limits, making it hard to find answers. Traditionally, researchers have focused on finding planets similar to Earth, believing that conditions mirroring our own would be the best place to look for life. However, a new study suggests that an entirely different type of planet could provide clearer evidence of living organisms. Instead of focusing on Earth-like planets, scientists have identified a unique biosignature gas that could reveal life in environments that are...

Decades of foothill forest growth erased due to severe drought. During the summer of 2015, survey flights conducted by the United States Forest Service (USFS) showed vast areas of dead and dying trees in the Sierra Nevada foothills and lower-elevation mountain areas of <a href="http://www.earth.com/image/wildfire-smoke-has-spread-across-much-of-california/">California</a>. Aircraft flew over four million acres of forested land and found that roughly 20 percent of stands had a distinct reddish-brownish coloration instead of a bright green, healthy leaf canopy. The toll was more than 10 million dead trees, region-wide.

To put this pattern of foothill forest decline into historical perspective, investigators at NASA’s Ames Research Center in California’s Silicon Valley published a study in April 2016 in the Journal of Earth Science &amp; Climatic Change. The paper documented NASA's unique three-decade record of vegetation cover change from the Landsat satellite and analyzed a series of detailed yearly maps to compare previous controls on forest growth rates and effects of recent fluctuations in water availability since the mid-1980s. Operating since the 1970s, the Landsat Earth-observing mission is operated jointly by NASA and the U.S. Geological Survey.

"NASA's satellite record offers abundant evidence that extensive tree die-back from the historically low water years of 2013 to 2015, combined with numerous large stand-replacing wildfires in the Sierra region, has essentially reversed the impressive accumulation of live tree density state-wide that we were tracking since the early 1980s,” said the study's lead author, Christopher Potter of Ames.

Three decades of foothill forest growth was erased by the drought's impacts over much of the lower-elevation Sierra Nevada mountain region in the past couple years.

The U.S. Weather Service defines drought as a deficiency in precipitation over an extended period resulting in water shortages that cause adverse impacts on vegetation, animals and people. The calendar year 2013 was the driest on record, with a total of just 30 percent of average statewide precipitation. A record low snowpack level in 2015 in the Sierra Nevada Mountains was unprecedented in comparison to the past 500 years – typical snow water levels in 2015 were detected at just five percent of the historical average.

Ames scientists began by examining Landsat satellite imagery at nearly all of the high tree die-back sites in the southern Sierra region flown by the USFS. The first outcome confirmed that changes in drought-sensitive satellite indices from the years 2011 to 2015 closely matched patterns of tree die-back across the USFS aerial survey locations in the southern Sierra region. But there was much more to learn; the satellite data record was analyzed further to put the 2013-2015 drought into historical context, particularly with respect to noticeable increases in forest canopy browning due to summer water limitations.

According to the satellite data, areas most severely impacted by constant water shortages were located just southwest of Yosemite, Kings Canyon, and Sequoia National Parks, and in the Sierra and Sequoia National Forests. The Landsat satellite data values at dying tree locations nearly resembled those from charred forest stands burned in the 2013 Rim Fire near Yosemite and the 2015 Rough Fire near Kings Canyon National Park.

This won’t be the end of the analysis of these regions. Potter says that Landsat images are provided by NASA at no cost to researchers every two weeks. “Our continued analysis of this unique, reliable satellite data over the next several years at these same Sierra aerial survey locations should help inform forest and park managers about the potential for further, delayed tree die-back,” Potter said. “It will also enable us to efficiently track subsequent recovery and regrowth rates of drought-affected forest stands during more favorable precipitation years."

To view the technical paper, visit:

<a href="http://www.omicsonline.org/open-access/landsat-image-analysis-of-tree-mortality-in-the-southern-sierra-nevadaregion-of-california-during-the-20132015-drought-2157-7617-1000342.pdf" target="_blank" rel="noopener noreferrer">http://www.omicsonline.org/open-access/landsat-image-analysis-of-tree-mortality-in-the-southern-sierra-nevadaregion-of-california-during-the-20132015-drought-2157-7617-1000342.pdf </a>

Decades of foothill forest growth erased due to severe drought

Decades of foothill forest growth erased due to severe drought....

<div>

Fort McMurray fires cause air quality issues. The air quality around the entire Fort McMurray region remains very poor. The Alberta Health Services has issued warnings for the entire area with Health Quality Index of 10+ (very high risk of triggering health issues) reported in the area. As evidenced in these images from the morning and evening passes of the Terra and Aqua satellites respectively, huge amounts of smoke are still billowing into the atmosphere. The Alberta Health Services has issued an air-quality advisory for the Fort McMurray area, as well as a precautionary air-quality advisory for Edmonton and communities in the North Zone due to wildfires. Real-time air-quality data and information is available at: <a href="http://www.environment.alberta.ca/apps/aqhi/aqhi.aspx" target="_blank" rel="noopener noreferrer">http://www. environment. alberta. ca/ apps/ aqhi/ aqhi. aspx</a>.

Current fire conditions are high to extreme in northeastern Alberta. The Fort McMurray fire remains out of control and is estimated to cover 522,892 hectares (2019 sq. miles), including 2,496 hectares (almost 10 sq. miles) in Saskatchewan. A total of 17 wildfires are burning but only the Fort McMurray fire remains out of control.Fort McMurray fires cause air quality issues

The Government of Alberta website reports there are 1,989 firefighters, 88 helicopters, 253 pieces of heavy equipment and 25 air tankers currently battling the fires. Fort McMurray, Anzac, Gregoire Lake Estates, Fort McMurray First Nation and Fort McKay First Nation remain under a mandatory evacuation order.

This natural-color satellite image was collected by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua and Terra satellites on May 24, 2016. Actively burning areas, detected by MODIS's thermal bands, are outlined in red. NASA image courtesy Jeff Schmaltz, <a href="http://www.earth.com/image/hurricane-eta-caused-deadly-flooding-in-central-america/">MODIS</a> Rapid Response Team. Caption: NASA/Goddard, Lynn Jenner with information from the Alberta Government website.


</div>
<div></div>

Fort McMurray fires cause air quality issues

Fort McMurray fires cause air quality issues. The air quality...

<div>

Clouds provide clues to predict global climate change. A research group from the CERN Cloud experiment, including scientists from Carnegie Mellon University's College of Engineering and Mellon College of <a href="http://www.earth.com/video/the-science-behind-big-80s-hair/">Science</a>, have uncovered the processes behind the formation and evolution of small atmospheric particles free from the influence of pollution. Their findings are key to creating accurate models to understand and predict global climate change. The findings are published in the May 26 issue of Nature.

Clouds and aerosols-small airborne particles that can become the seeds upon which clouds form-are essential to climate predictions because they reflect sunlight back into space. Reflecting light away from Earth can have a cooling effect, masking some of the warming caused by greenhouse gases.

"The best estimate is that about one-third of the warming by greenhouse gas emissions is masked by this aerosol cooling, but the fraction could be as large as half and as little as almost nothing," says Neil Donahue, professor of chemical engineering, engineering and public policy, and chemistry at Carnegie Mellon.Clouds provide clues to predict global climate change

In order to have complete climate prediction models, scientists need to incorporate clouds and aerosols into their calculations, but understanding how new aerosol particles form and grow in the atmosphere, and how they affect clouds and climate, has been challenging.

Scientists involved with CERN's CLOUD experiment study use a large chamber to simulate the atmosphere and track the formation and growth of aerosol particles and the clouds they seed. The latest research shows that new particles can form exclusively from the oxidation of molecules emitted by trees without the presence of sulfuric acid. Sulfuric acid largely arises from fossil fuels, so the new findings provide a mechanism by which nature produces particles without pollution.

"This softens the idea that there may be many more particles in the atmosphere today due to pollution than there were in 1750, and suggests that the pristine pre-industrial climate may have had whiter clouds than presently thought," says Donahue.

The team's research has lasting climate implications.

"Earth is already more than 0.8C than it was in the pre-industrial epoch, and this is with some masking by aerosol particles. As the pollution subsides, up to another 0.8C of hidden warming could emerge," says Donahue.
###
Additional research from the CLOUD collaborators, including Engineering doctoral student Wayne Chuang, identifies how nucleated particles grow over time to the point that they can seed cloud droplets and influence climate. The growth process identified by the CMU team applies to all tiny particles in the atmosphere.

To see a video of Donahue discussing these two studies, visit: <a href="https://youtu.be/cn_gjU7AiMs" target="_blank" rel="noopener noreferrer">https:/ / youtu. be/ cn_gjU7AiMs</a>

The articles can be found at: doi:10.1038/nature17953, doi:10.1038/nature18271.

</div>

Clouds provide clues to predict global climate change

Clouds provide clues to predict global climate change. A research...

<div>

Even small offshore oil spills put seabirds at risk. Seabirds exposed to even a dime-sized amount of oil can die of hypothermia in cold-water regions, but despite repeated requests by Environment Canada, offshore oil operators are failing when it comes to self-monitoring of small oil spills, says new research out of York University.

Chronic pollution from many small offshore oil spills may have greater population-level impacts on seabirds than a single large spill, suggest researchers Gail Fraser and Vincent Racine of York U's Faculty of Environmental Studies. However, seabirds are rarely considered in the monitoring of small spills from offshore oil production projects in Newfoundland and Labrador even though Environment Canada has asked that they be included.

In an article published in the international journal, Marine Pollution Bulletin, Fraser and Racine looked at how offshore oil operators monitored and responded to small spills (less than 1,000 litres) for three production projects off the coast of Newfoundland and Labrador.

In three high-profile environmental assessments Environment Canada repeatedly requested that impacts on seabirds be monitored following small spills, but this has not happened.

"Industry self-monitoring of spills has failed to collect information that would allow researchers to understand the impact of chronic oil spills on seabirds," said Fraser, who along with Racine is calling for independent observers on the offshore platforms. "Many seabird populations are declining and understanding sources of mortality is critical to their conservation." Even small offshore oil spills put seabirds at risk

Fraser and Racine looked at reporting and monitoring of spills between 1997 and 2010. The researchers obtained operator spill reports under an Access to Information request. They found there were 220 daytime spills. Reporting on the presence or absence of seabirds was done in only 11 (five per cent) of the cases. The Canadian Wildlife Service's seabird survey protocol should be followed when a spill occurs, but none of the reports showed evidence of that. The time it takes for a small spill to dissipate was also not in the spill reports and this information is required to estimate possible interactions of oil spilled with seabirds. "The lack of information on seabirds during oil spills indicates a need for third-party observers," said Fraser.

The joint federal and provincial Newfoundland &amp; Labrador the Canada-Newfoundland Labrador Offshore Petroleum Board (C-NLOPB) is responsible for administering environmental assessment follow-up procedures, including monitoring and responses to oil spills. The C-NLOPB has repeatedly rejected calls for independent, third party observers on platforms while seemingly being incapable of enforcing Environment Canada's recommendations.

However, during the White Rose environmental assessment process the C-NLOPB publicly acknowledged "that should such circumstances arise, it is fully prepared to adopt a different regulatory approach, including consideration of full-time on-site oversight of the operations concerned." While the circumstances were not defined, Fraser argues that "A failure to collect information on seabirds during oil spills for 13 years is sufficient to demand the regulatory approach be changed to include third-party observers."
###
*Note: High res photos available, including the following.

<a href="http://news.yorku.ca/files/Oiled-Thick-billed-Murre-Cripple-Cove-Nfld-Nov.-28-2004.-Photo-credit-Ian-L.-Jones.jpg" target="_blank" rel="noopener noreferrer">http://news. yorku. ca/ files/ Oiled-Thick-billed-Murre-Cripple-Cove-Nfld-Nov. -28-2004. -Photo-credit-Ian-L. -Jones. jpg</a>

<a href="http://news.yorku.ca/files/Oiled-Thick-billed-Murre-Cripple-Cove-near-Cape-Race-Newfoundland-November-28-2004.-Photo-by-Ian-L.-Jones.jpg" target="_blank" rel="noopener noreferrer">http://news. yorku. ca/ files/ Oiled-Thick-billed-Murre-Cripple-Cove-near-Cape-Race-Newfoundland-November-28-2004. -Photo-by-Ian-L. -Jones. jpg</a>

<a href="http://news.yorku.ca/files/Oiled-Thick-Billed-Murre-Cape-Shore-Newfoundland-4-December-2004.-Photo-by-Bill-Montevecchi.jpg" target="_blank" rel="noopener noreferrer">http://news. yorku. ca/ files/ Oiled-Thick-Billed-Murre-Cape-Shore-Newfoundland-4-December-2004. -Photo-by-Bill-Montevecchi. jpg</a>

<a href="http://news.yorku.ca/files/Oiled-Common-Murre-Cape-Shore-Newfoundland-4-December-2004.-Photo-by-Bill-Montevecchi.jpg" target="_blank" rel="noopener noreferrer">http://news. yorku. ca/ files/ Oiled-Common-Murre-Cape-Shore-Newfoundland-4-December-2004. -Photo-by-Bill-Montevecchi. jpg</a>

York University is known for championing new ways of thinking that drive teaching and research excellence. Our 52,000 students receive the education they need to create big ideas that make an impact on the world. Meaningful and sometimes unexpected careers result from cross-discipline programming, innovative course design and diverse experiential learning opportunities. York students and graduates push limits, achieve goals and find solutions to the world's most pressing social challenges, empowered by a strong community that opens minds. York U is an internationally recognized research university - our 11 faculties and 24 research centres have partnerships with 200+ leading universities worldwide.

Media Contact:

Sandra McLean, York University Media Relations, 416-736-2100 ext. 22097 / <a href="mailto:sandramc@yorku.ca">sandramc@yorku.ca</a>

</div>

Even small offshore oil spills put seabirds at risk

Even small offshore oil spills put seabirds at risk. Seabirds...

Exxon and Chevron reject climate change resolutions. Shareholders at Exxon Mobil and Chevron rejected climate change resolutions backed by environmentalists that would have pushed the companies to take stronger stands in favor of limiting climate change.
Environmentalists took solace, however, that some of their ideas gained considerable support.
At Chevron Corp., a resolution asking for an annual report each year on how climate-change policies will affect the company received 41 percent of the vote. A similar resolution at Exxon got 38 percent.
Also, Exxon Mobil Corp. shareholders voted to ask directors to adopt a proxy-access rule, which would make it easier for shareholders to propose their own board candidates. Backers including the <a href="https://www.bing.com/search?q=new+york&amp;cvid=0b568deee1ee4d528f3fc616d4b0fd3a&amp;FORM=ANAB01&amp;PC=HCTS">New York</a> City comptroller said it could result in the election of independent directors who could help the company address risks like climate change.
The meetings Wednesday - Exxon's in Dallas, Chevron's in San Ramon, California - came as the companies are trying to dig out from the collapse in crude prices that began in mid-2014. Exxon earned $16.15 billion last year, its smallest profit since 2002. Chevron's annual profit plunged 76 percent to $4.59 billion and included the company's first money-losing quarter since 2002.
Crude prices have rebounded since February, boosting the shares of the top two U.S. oil companies, but they remain about half of what they were at their last peak.
Exxon is also dealing with investigations by officials in several states into what the company knew and allegedly didn't disclose about oil's role in climate change.
The company's shareholders rejected resolutions to put a climate expert on the board and support the goal of a UN meeting in Paris last year to limit global warming to 2 degrees Celsius above pre-industrial levels. Exxon and Chevron reject climate change resolutions
Patricia Daley, a Dominican sister from New Jersey and sponsor of one of the resolutions, said Exxon lacked "moral leadership."
"Our company has chosen to disregard the consensus of the scientific community, the will of the 195 nations that signed the <a href="http://www.earth.com/news/inconsistent-paris-agreement-pledges/">Paris</a> agreement," religious leaders and even other oil companies, Daley said.
Exxon CEO Rex Tillerson said his company has long recognized that climate change is a serious risk and might require action. But, he said, any policies should be implemented evenly across the world, allow market prices to pick solutions, and be flexible enough to respond to economic ups and downs and "breakthroughs in climate science."
Exxon forecasts that oil and gas will make up 60 percent of the world's energy supply in 2040 - about the same share it holds today. Its CEO said the company was balancing the need to produce more energy for growing world demand with environmental considerations.
Tillerson said there is no alternative source that can replace the ubiquity of fossil fuels. He expressed confidence that technology will provide the key to limiting carbon emissions.
"We've got to have some technological breakthroughs," he said, "but until we achieve those, to just say turn the taps off is not acceptable to humanity," he said.
The shareholders responded with robust applause.
Across the street from the meeting hall, about 60 protesters gathered and urged large shareholders such as pension funds to divest their shares. Many held signs with slogans such as "Exxon Liar Liar Earth on Fire." The mood was sedate, however, perhaps owing to the warm, muggy weather.
Exxon shares rose 59 cents to $90.26, and Chevron shares gained $1.60 to $101.79.
---
This story has been corrected to note that the climate-change resolution won 38 percent support, instead of a maximum of 25 percent support.
© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.

Exxon and Chevron reject climate change resolutions

Exxon and Chevron reject climate change resolutions. Shareholders at Exxon...

Poland starts cutting down beetle-infested trees. Authorities have started chopping down beetle-infested trees in parts of Poland's oldest forest, a move that aims to eliminate dying trees and to ensure safety for tourists, a government official said Wednesday.
The Environment Ministry's plan to fell thousands of spruce trees affected by bark beetles in the Bialowieza <a href="https://www.bing.com/search?q=forest&amp;cvid=dd9457eb831746da8f993b7b0050dfe4&amp;FORM=ANAB01&amp;PC=HCTS">Forest</a> has drawn the ire of <a href="http://www.earth.com/news/surge-in-wildfires-from-climate-change-will-increase-air-pollution/">environmental</a> groups, which argue it threatens the forest and that nature will take care of itself.
The groups have filed a protest with the European Commission, which has also expressed concern over the tree culling plan. The forest includes Europe's last primeval woodland, protected as a national park, and is on the UNESCO world heritage list. Poland starts cutting down beetle-infested trees
But Environment Minister Jan Szyszko, who took office last fall, insists his predecessors have neglected the woods and that beetle-affected, dying trees need to be removed to stop the infestation.
Ministry spokesman Jacek Krzeminski told The Associated Press that in younger parts of the woods, foresters have begun felling sick trees along tourist routes to prevent any danger to visitors. This is the very start of a larger tree culling program planned for years.
The forest covers around 60,000 hectares (148,260 acres) in eastern Poland and stretches into Belarus. It is home to hundreds of animal and plant species, including bison, lynx, moss and lichens. About 4,000 hectares (9,885 acres) are deadwood now, because of the bark beetle, Krzeminski said.
© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.

Poland starts cutting down beetle-infested trees

Poland starts cutting down beetle-infested trees. Authorities have started chopping...

<div>

Study examines the drought vulnerability of maize and wheat. Researchers led by Lixin Wang, assistant professor of earth sciences in the School of Science at <a href="http://www.earth.com/news/indiana-jones-search-lost-ark/">Indiana</a> University-Purdue University Indianapolis, have identified critical information about the environmental variables and agronomic factors that determine the drought vulnerability of maize and wheat production.

The study, "Global Synthesis of Drought Effects on Maize and Wheat Production," was published today in the journal PLOS ONE.Study examines the drought vulnerability of maize and wheat

"Our food source depends heavily on cereals, yet their agricultural production is greatly affected by drought," Wang said. "Ultimately, this information can be used to guide agricultural planning and minimize crop loss due to drought."

Together, maize and wheat contributed more than 50 percent of global cereal production in 2013, or equal to about 1,016 and 713 million tons of grain production, respectively. These numbers need to be increased by 60 percent to 110 percent by 2050 to meet the increasing needs of humans and meat- and dairy-producing animals, as well as the biofuel industry, according to statistics cited by the researchers.

But with droughts projected to intensify in most parts of Asia and beyond, it is more important than ever to fully understand how drought affects the vulnerability of maize and wheat production, in combination with other factors such as the life cycle of the cereals and soil texture, according to Wang.

Using a data-synthesis approach, the researchers collected data from peer-reviewed publications dated between 1980 and 2015 that examined maize and wheat yield responses to drought.

Based on the meta-analysis of all of the available literature data, the study results show that maize and wheat have a significantly different yield response to drought.

"Overall, we found that maize tended to experience greater yield loss due to drought, partly because maize originated from a wetter region," Wang said.

According to the study, wheat has a lower yield reduction, 20.6 percent, compared to 39.3 percent for maize at approximately 40 percent water reduction.

Maize is also highly sensitive during its reproductive phase, the researchers found. Although wheat has similar sensitivity to drought during vegetative and reproductive phases, it is considerably lower than that of maize.

The higher yield reduction in response to drought in maize is surprising, given that plants with C4 photosynthetic pathways (e.g., maize) usually have higher water-use efficiency than C3 plants (e.g., wheat) and therefore are considered less sensitive to drought due to their ability to efficiently make use of carbon dioxide and water. Higher sensitivity during the reproductive phase for maize could contribute to these unexpected results, Wang said.

Another finding was that maize is equally sensitive to drought in dryland and non-dryland regions. While no yield difference was observed among regions or in different soil texture, it was found that wheat cultivation in dryland regions is more prone to yield loss than in the non-dryland regions.

The study's results may be used as the basis to model the interactions between agronomic inputs, to quantify productivity gains and production costs for maize and wheat, and to determine optimum irrigation scheduling during critical growth periods, Wang said.

The lead author of this research is Stefani Daryanto, a postdoctoral researcher working with Wang. The other author of the paper is Pierre-Andre Jacinthe, an earth sciences associate professor in the School of Science at IUPUI.


</div>
<div></div>

Study examines the drought vulnerability of maize and wheat

Study examines the drought vulnerability of maize and wheat. Researchers...

Spring snowpack becoming more vulnerable to climate change. Spring snowpack, relied on by ski resorts and water managers throughout the Western United States, may be more vulnerable to a warming climate in coming decades, according to a new University of <a href="https://www.bing.com/search?q=utah&amp;form=EDGEAR&amp;qs=PF&amp;cvid=1afc1cfdc8b748ad86c69db28d7ec0d9&amp;cc=US&amp;setlang=en-US&amp;elv=AY3%21uAY7tbNNZGZ2yiGNjfOY30fClOq9osfcI6T5oj*hE6t5rxobamX30NRQjBmy*OP9iLS3k4wiq6hva%215doRmj9DfIWHLG9gu65Xi7ZK5Q&amp;plvar=0&amp;PC=HCTS">Utah</a> study.

The study, accepted for publication in Geophysical Research Letters, models the year-to-year variability in precipitation and temperature in Utah's Wasatch Mountains and other ranges in the West. Jason Scalzitti, a graduate student in atmospheric sciences, and professors Court Strong and Adam Kochanski found that above a threshold elevation, the amount of spring snowpack is dependent more on the amount of precipitation in a year than the temperature. In other words, whether a year is wet matters more than if it's warm. But below that threshold, temperature matters more. By the end of the century, according to the study, that threshold will move uphill by around 800 feet in the Wasatch and more in the Sierra Nevada, Cascades and parts of the Rocky Mountains.

"In the past we've thought mainly about total precipitation as an indicator of how good the ski season's going to be," says Strong. "As we move into the future, especially at elevations below the threshold, temperature increases in importance." Spring snowpack becoming more vulnerable to climate change

Zooming in on the Wasatch

Strong and his colleagues based their work on a high-resolution, regional-scale climate model called the Weather Research and Forecasting (WRF) model. Conventional climate models make calculations on grids 62 miles (100 km) on a side. For reference, less than 20 miles separate Salt Lake City, west of the Wasatch, and Park City, Utah, on the east. "You can't even see the Wasatch Range at that resolution," Strong says. Although the coarser grid of global climate models works well in flat topography, such as the <a href="http://www.earth.com/news/great-plains-rain-plow/">Great Plains</a>, the complex terrain of the Intermountain West requires a finer resolution.

The researchers employed a technique called "dynamical downscaling," telescoping the model grid into smaller and smaller grid cells in order to capture fine-scale atmospheric processes affecting local climate. In the team's final simulations, the Wasatch Range was modeled at a resolution of about 2.5 miles (4 km) to realistically capture impacts of the range's slopes, canyons, and peaks on the local precipitation pattern. They further accounted for future temperature changes in the Great Salt Lake and evaporation from urban irrigation, both of which contribute moisture to the air. The team projected regional future climate forward to the year 2100 using a business-as-usual carbon emissions scenario that assumes greenhouse gas emissions will continue to increase at the same rate as today.

Crossing the threshold

They found that at high elevations, temperatures remain cold enough throughout the spring to turn precipitation to snow and to keep the snow on the ground from melting. Amount of precipitation is the main factor determining how much snow is on the ground during the critical spring months. Going down toward the valley floors, however, temperatures rise, and even in years with high precipitation, the slopes experience more rain and more melting. Temperature becomes the primary driver of the depth of spring snowpack.

The threshold elevation between precipitation-controlled and temperature-controlled snowpack, currently sits at about 6500 feet (1980 meters) in the Wasatch, near the base elevation of the ski resorts in Park City. In future projections, however, the threshold elevation rises to 7300 feet (2230 meters).

In the simulations, modeled threshold elevations rose in mountain ranges all over the West - by about 800 feet (250 meters) in Colorado's Rockies, about 980 feet (300 meters) in California's Sierra Nevada and Washington's Cascades and more than 1400 feet (432 meters) in the middle Rockies of Idaho and Wyoming.

Impacts in peaks and valleys

Four Wasatch ski resorts, Solitude, Snowbird, Alta, and Brighton, sit well above the end-of-century 7300 foot threshold. But the rest, including venues from the 2002 Winter Olympics, sit at base elevations between 5500 and 7200 feet. The peak elevations of all resorts except one, Nordic Valley, extend up above the 7300 foot future threshold.

An overall warming trend doesn't mean that every year will be a bad year for low-elevation resorts. But below the threshold elevation, resorts will more susceptible to warm years. "Let's say we get the same amount of storms every year," says study co-author Kochanski. "Above the threshold, the resorts will probably be fine. For the others, even if we have the same precipitation, they may be in trouble because they could get more rain instead of snow, and the snowpack will diminish faster."

Although impacts to ski resorts could affect Utah's economy, another implication of diminished snowpack affects nearly all Utahns - shrinking water resources. Melting spring snowpack fills reservoirs, providing water for the residents of the Salt Lake Valley. Spring snowpack amounts are a key indicator for water managers of how much water they'll have available in reservoirs for the coming year.

"They look at that as how much water is available in the form of snow to melt and capture in the reservoirs," Strong says. "That will be down in the future. Even if we have the same amount of water coming into the system, it will be melting earlier and faster. If we want to supply that to a growing population, then we need increased storage capacity."

Strong and Kochanski say they can now use their model as a framework to continue exploring questions about future climate and snowpack variation, both by exploring the impacts of different carbon emissions scenarios and by looking at mountain ranges around the world, such as the Himalayas.
###
This work was funded by the National Science Foundation.

This release and accompanying images are available at <a href="http://unews.utah.edu/spring-snow-a-no-go/" target="_blank" rel="noopener noreferrer">http://unews. utah. edu/ spring-snow-a-no-go/ </a>

The full study, which has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, can be found here: <a href="http://onlinelibrary.wiley.com/doi/10.1002/2016GL068798/full" target="_blank" rel="noopener noreferrer">http://onlinelibrary. wiley. com/ doi/ 10. 1002/ 2016GL068798/ full</a>

Spring snowpack becoming more vulnerable to climate change

Spring snowpack becoming more vulnerable to climate change. Spring snowpack,...

Summer forecast: Well above average temperatures. Most of the continental United States is facing elevated chances of well above average temperatures this summer, according to the <a id="anch_49" href="http://www.cpc.ncep.noaa.gov/products/predictions/long_range/fxus05.html" target="_blank" rel="noopener noreferrer">latest outlook</a> from NOAA’s Climate Prediction Center.

Colored areas on the map at right show which parts of the country have the highest odds (darkest red) for well above average warmth for the June-August period. For the seasonal forecasts, “well above average” means temperatures in the warmest third of all summers in the current climatological record (1981-2010). (Larger versions as well as precipitation maps are available via links below image to the right. A separate forecast discussion for Hawaii is available <a id="anch_50" href="https://www.google.com/url?q=http://www.cpc.ncep.noaa.gov/products/predictions/long_range/fxhw40.html">here</a>.)

Nationwide, Alaska’s Aleutian <a href="http://www.earth.com/news/nutrients-in-seabird-poop-transformed-the-falkland-islands/">Islands</a> have the highest chances of an unusually warm summer, with probabilities between 60-70 percent. For the contiguous United States (i.e, the “Lower 48”), the chances for top-tier warmth are greatest in the West and the Northeast (50-60 percent), and smallest in the heart of the Great Plains, where the odds of well above average temperatures are the same as the odds of near-average or well below average temperatures (33 percent each). Summer forecast: Well above average temperatures

(For math fans, a more detailed discussion of forecast probabilities is available at the end of the post.)

Darker colors mean greater chances of a hot summer, not how much hotter it’s projected to be. In other words, we’re not predicting that summer temperatures in Maine will be farther above average than temperatures in Florida; we’re predicting that the chances for an unusually hot summer are greater in Maine than they are in Florida.

Although the tropical Pacific appears to be in the middle of a transition between El Niño and La Niña, neither phase of <a id="anch_51" href="https://www.climate.gov/enso">ENSO</a> has a significant influence on summer climate. Instead, the summer outlook is more influenced by short- and long-term ocean and atmospheric trends as well as mid-latitude sea surface temperatures in the Pacific and Atlantic Oceans.

For public health and welfare agencies or employers with outdoor laborers, summer temperature outlooks can provide advance warning of an elevated risk of dangerous summer heat. As part of the interagency <a id="anch_52" href="https://toolkit.climate.gov/nihhis">National Integrated Heat Health Information System</a> (NIHHIS), NOAA the CDC, and many other partners are providing quick online access to temperature outlooks and other heat health information and tools.  <a id="anch_53" href="http://toolkit.climate.gov/nihhis">NIHHIS</a> is built on the <a id="anch_54" href="https://toolkit.climate.gov/">U.S. Climate Resilience Toolkit</a>, an interagency website devoted to helping U.S. communities and businesses become more resilient to climate variability and change.
<h3>Fun for math fans</h3>
NOAA’s seasonal forecasts start with the assumption that for any random summer or winter, there are three possible climate outcomes--temperature or precipitation that is well above normal (upper third of the climatological record), near normal (middle third), or below normal (lower third)--and they are each equally likely. Together, all probabilities must add up to 100%, so the “default” probability for each outcome is 33.3%.

The goal of the forecast is to estimate how the actual conditions in the weeks or months before the season--like the presence of El Niño--tilt the odds toward or away from “equal chances” for all categories. If models predict that the chances of well above average temperatures are 60%, then the chances for the other two outcomes (near-average and well below average temperatures) must be split between the remaining 40% (100-60=40).

How do we divvy up the remaining fraction? Physically speaking, it makes sense to say that if the odds have tilted toward one climate outcome (say, unusual warmth) by a given amount, they’ve tilted away from the opposite outcome by an equal amount. So, by convention, forecasters divvy up the remaining fraction by holding the chances for near-normal conditions at the “default” 33.3%, and subtracting it from the remainder. What’s left (6.7%) is the probability of the least favored category.

When the odds of one climate outcome are so high (70 percent or more) that the remaining fraction is smaller than 33.3 percent, forecasters set a minimum 3.3 percent chance for the opposite outcome, and give the larger portion of the remainder to the near-normal outcome. (Otherwise, the least favored category would wind up with a negative probability, which doesn’t make mathematical or physical sense.) The Climate Prediction Center <a id="anch_55" href="http://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/shortlegend.gif">has a chart </a>showing all the possible combinations, and <a id="anch_56" href="http://www.cpc.ncep.noaa.gov/products/predictions/long_range/seasonal_info.php">their own description</a> of the forecast format.

Since only one color can be assigned to any location on the map, the most favored category decides the color, but the other categories are still possible. So, in this summer’s season outlook for the Northeast and the West Coast, for example, the full suite of probabilities is 50-60% chance of well above normal temperatures, 33.3% chance of near-normal temperatures, and 6.7-16.7% chance of well below normal temperatures.

Maps by NOAA Climate.gov team, based on data from the Climate Prediction Center. Monthly outlook maps in a variety of re-usable formats are available via the<a id="anch_57" href="http://www.climate.gov/maps-data/data-snapshots/start"> Data Snapshots</a> section of Climate.gov.

Summer forecast: Well above average temperatures

Summer forecast: Well above average temperatures. Most of the continental...

<div>

With climate change already close to an irreversible tipping point, urgent action is needed to reduce not only our mean (carbon) footprints but also the "number of feet" - that is, the growing population either already creating large footprints or aspiring to do so, argues a leading physician and environmentalist in The BMJ today. Expert urges voluntary family planning to mitigate climate change

Yet John Guillebaud, Emeritus Professor of Family Planning and Reproductive <a href="http://www.earth.com/news/mental-health-benefits-of-nature-cannot-be-prescribed/">Health</a> at University College London, says most climate change discussions focus only on technology and consumption.

He points out that 45% of the world lives in areas where total fertility rates range from 2.1 to 5, and 9% where they exceed 5. In the 48 countries designated by the United Nations as least developed, population is projected to triple by 2100.

The UN's latest median world population projection of 11.2 billion by 2100 is predicated on continuing reductions in fertility rate, he adds. Without them, the constant fertility variant projects to roughly 28 billion by 2100.

Studies invariably show that family planning is highly cost effective compared with other emission abatement strategies, he explains.

For instance, simply by having one less child, an American woman would reduce her "carbon legacy" (the summed emissions of herself and her descendants weighted by relatedness) by 9441 tonnes, he writes. This is around 20-fold (10-fold in the United Kingdom) more than would be saved by other eco-actions.

He calls on health professionals to "advocate for voluntary family planning" and says "action on population growth as well as technology and consumption is essential to ensure that climate mayhem is both minimised and mitigated."

On Sunday, 5th June, Professor Guillebaud will be involved in celebrations for the ecotimecapsule project. Initiated in 1994 at botanic gardens in Kew and Ness, the Seychelles, New South Wales, Mexico and South Africa, it aims to make a decent, truly sustainable future a reality for our grandchildren - and for all the wild species in Nature that humankind so threatens. <a href="http://www.ecotimecapsule.com/" target="_blank" rel="noopener noreferrer">http://www. ecotimecapsule. com</a>
###
Note to Editors

Analysis: Voluntary family planning to minimise and mitigate climate change

Journal: The BMJ

Link to full article: <a href="http://press.psprings.co.uk/bmj/may/familyplanning.pdf" target="_blank" rel="noopener noreferrer">http://press. psprings. co. uk/ bmj/ may/ familyplanning. pdf</a>

BMJ is a healthcare knowledge provider that aims to advance healthcare worldwide by sharing knowledge and expertise to improve experiences, outcomes and value. For a full list of BMJ products and services, please visit bmj.com

</div>

Expert urges voluntary family planning to mitigate climate change

With climate change already close to an irreversible tipping point,...

Climate negotiators concerned about US and UK elections. Climate negotiators ended their first talks after last year's landmark Paris Agreement on Thursday with some delegates expressing concern about the potential impact of upcoming votes in the U.S. and Britain.
Britons will decide next month whether to remain in the European Union while Americans will elect a new president in November.
The 28-member EU has vowed to reduce greenhouse emissions by at least 40 percent by 2030 compared to 1990, but it's unclear what happens to that target if <a href="http://www.earth.com/news/climate-change-will-cause-abrupt-shifts-in-great-britains-vegetation/">Britain</a>, the bloc's second biggest emitter, leaves the EU.
"I'm sure there will be some parties saying 'without the UK can we still reach the at least 40 percent?'" Netherlands climate envoy Michel Rentenaar said at the U.N. talks in Bonn. "I think we can, but that would be decided by the remaining 27 member states."
Elina Bardram, the EU's chief negotiator, declined to speculate on how a British exit would affect the bloc's climate policy.
"We are ... confident that the British public will vote to remain in the EU," she said.
The Paris Agreement in December requires countries to submit plans for reducing or curbing their emissions and update them every five years.
Ajmad Abdulla, chief negotiator for small island nations at risk of rising seas, said he was confident the EU would "stick with their target" regardless of the outcome in the referendum.
A bigger unknown is what happens if Donald Trump, who has expressed skepticism about man-made climate change, wins the U.S. election. In 2012, he tweeted that "the concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive."
The Obama administration has pledged to slash U.S. emissions by 26-28 percent by 2025, compared to 2005 levels. Climate negotiators concerned about US and UK elections
Mohamed Adow, a climate policy expert at Christian Aid, a Britain-based charity, said for the U.S. to backtrack on its Paris pledges would be "insulting," since key elements of the deal were designed to accommodate U.S. negotiators.
For example, the EU and others dropped demands for the targets to be legally binding so that the Obama administration could approve the deal without turning to Congress.
Nick Nuttall, a spokesman for the U.N. climate secretariat, said he couldn't imagine that any U.S. president would roll back efforts to cut emissions.
"In any political election there is a lot of talk but the reality of being in office is very different so I think we'll have to watch that space," Nuttall said.
© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.

Climate negotiators concerned about US and UK elections

Climate negotiators concerned about US and UK elections. Climate negotiators...

<div>

Underwater grass beds have ability to protect and maintain their own health. An expansive bed of underwater grass at the mouth of the Susquehanna River has proven it is able to "take a licking and keep on ticking." A recent study has found that the submersed aquatic vegetation (SAV) bed at Susquehanna Flats, which only recently made a comeback in the <a href="http://www.earth.com/news/rockfish-leave-chesapeake-bay-at-a-specific-length/">Chesapeake Bay</a>, was not only able to survive a barrage of rough storms and flooding, but it has proven a natural ability to protect and maintain itself.

"It's proof that restored SAV beds have the capability to be resilient," said study author Cassie Gurbisz of the <a href="https://www.bing.com/search?q=university+of+maryland&amp;cvid=4f035ff36c6941da97000f632dbc50c8&amp;FORM=ANAB01&amp;PC=HCTS">University of Maryland</a> Center for Environmental Science's Horn Point Laboratory. "They can stick around for a while if you give them the right conditions." Underwater grass beds have ability to protect and maintain their own health

Some 40 years ago, Tropical Storm Agnes wiped out the Susquehanna Flats SAV bed, which had already been weakened by decades of nutrient pollution. In recent years, however, the bed made an incredible comeback, and today it is one of the biggest and healthiest in the Bay, spanning some 20 square miles.

It has been projected that climate change will bring increases in the frequency and intensity of extreme storm events, which leads to the question of whether or not these ecosystems can withstand or rebound from such events. Scientists studied how the bed at Susquehanna Flats responded to the one-two punch of major storms in 2011 (Hurricane Irene and the remnants of Tropical Storm Lee) to find how resilient the underwater grasses are in the upper Chesapeake.

Sea grasses are essential to the Bay ecosystem. They pull harmful nutrients out of the water, cause sediments to settle to the bottom so sunlight can reach plants, protect the shoreline by reducing the impact of waves and currents, and provide habitat and food for a host of important organisms, including baby crabs.

The team of scientists looked at time series datasets to explore how extreme events impacted the Susquehanna Flats and to understand the factors that drove loss and resilience in this large, dense and continuous meadow of grasses. They found that the storms in 2011 did some damage to the bed at Susquehanna Flats because the rush of the water from the Susquehanna River tore up plants around the edge of the bed and deposited sediment that blocked the sunlight, limiting photosynthesis.

However, the bed was able to reduce the force of high flows sufficiently to prevent plant erosion at its inner core. In addition, although the floodwaters dumped a lot of sediment onto the SAV bed, it also dampened the waves driven by the winds. This decreased the amount of sediment that was later churned up and, as a result, increased water clarity. In fact, clear water spilled over into adjacent regions during ebb tide, further improving the bed's capacity for renewal by creating more favorable growing conditions in areas where plant loss had occurred.

"Although there was substantial SAV loss in response to a major flood event, the system was also remarkably resilient, apparently owing to strong biophysical feedback processes carried out by a large, dense, healthy SAV bed," said Gurbisz.

It's called a positive feedback process. The plant beds alter physical conditions in ways that enhance their own growth - and it may help plant beds absorb the harmful impacts of storms. For instance, the plants create clear water in the middle of the bed, which promotes more plant growth, further improving water clarity, and so on. When that clear water spills out of the plant bed into the surrounding water, more light is available for new plants to grow. Together, these processes create conditions that allow the bed to resist damage and recover more quickly from the rush of water and sediments from storms.

"The SAV bed modifies its environment in ways that improve its own growth and likely serve as mechanisms of SAV resilience to flood events," said Gurbisz.
###
The study, "Mechanisms of storm-related loss and resilience in a large submersed plant bed" by Cassie Gurbisz, Michael Kemp, and Larry Sanford of the University of Maryland Center for Environmental Science and Robert Orth of the Virginia Institute of Marine Science was published in Estuaries and Coasts.

UNIVERSITY OF MARYLAND CENTER FOR ENVIRONMENTAL SCIENCE

For 90 years, the University of Maryland Center for Environmental Science has led the way toward better management of Maryland's natural resources and the protection and restoration of the Chesapeake Bay. From a network laboratories located across the state, UMCES scientists provide sound advice to help state and national leaders manage the environment, and prepare future scientists to meet the global challenges of the 21st century.

</div>

Underwater grass beds have ability to protect and maintain their own health

Underwater grass beds have ability to protect and maintain their...

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



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



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



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



Video/ Image Credit: ESA



---



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

Nushagak Bay in southwest Alaska

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

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



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



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



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



Video/ Image Credit: American Chemical Society&nbsp;



---



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



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

Flu viruses are more flexible than expected

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

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



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



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



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



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



Video/Image Credit: ESA&nbsp;



---



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

Lake Trasimeno in Central Italy

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

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



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



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



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



Video Credit: American Chemical Society&nbsp;



---



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



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

Detecting mercury contamination with the tap of a finger

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

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



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



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



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



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



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



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



Video/ Image Credit: European Space Agency&nbsp;



---



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



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

Kainji Lake in north central Nigeria

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

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



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



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



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



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



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



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



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



Video Credit: Amanda Nguyen/University of Illinois



---



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



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

Designing crops that can beat the heat

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

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



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



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



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



Video Credit: ACS Reactions



---



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



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

How does salt makes things taste better?

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

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



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



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



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



Video/ Image Credit: ESA



---



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



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

Santiago, Chile in South America

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

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

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



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



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



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



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



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



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



Video Credit: Johns Hopkins&nbsp;



---



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



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

Interactive map of the universe includes 200,000 galaxies

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

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



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



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



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



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



Video Credit: NASA Goddard&nbsp;



---



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



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

Remote sensing will revolutionize the way we monitor trees

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

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



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



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



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



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



Video Credit: ESA&nbsp;



---



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



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

The city of Dublin on Ireland's east coast

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

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



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



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



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



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



Video/ Image Credit: ESA



---



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



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

The province of Zaragoza in northeast Spain

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

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



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



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



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



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



Video Credit: NASA Goddard



---



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



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

Wetlands are a major source of methane emissions

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

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



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



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



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



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



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



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



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



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



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



---



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



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

The rapid retreat of the Columbia Glacier

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

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



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



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



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



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



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



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



Video &amp; Image Credit: ESA



---



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



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

The Pyrenees Mountains in southwest Europe

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

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



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



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



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



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



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



Video Credit: Stowers Institute for Medical Research&nbsp;



---



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



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

How the immune system responds to injury

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

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



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



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



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



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



Video/ Image Credit: NASA Goddard



---



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



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

2022 illustrated the consequences of a warming climate

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

Earth,Like,Exoplanet,3d,Render

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



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



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



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



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



Video Credit: NASA Goddard



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



---



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



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

Two distant planets may be "water worlds"

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

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



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



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



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



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



Video Credit: NASA Goddard&nbsp;



---



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



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

Satellites reveal how Earth's systems are interconnected

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

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



---



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.

Tiger sharks are shifting poleward as temperatures rise

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

News coming your way