In a remarkable medical breakthrough, engineers have developed a light-activated pacemaker so tiny that doctors can inject it into the body through a syringe. Remarkably, the device simply dissolves after it’s no longer needed.&nbsp;



Designed for newborns, the pacemaker could transform temporary heart care after congenital defect surgeries.



<h2 class="wp-block-heading" id="h-controlling-the-heart-with-light">Controlling the heart with light</h2>



The new pacemaker is smaller than a grain of rice. It's wirelessly activated through pulses of light which are delivered by a soft, wearable device mounted on the patient’s chest.



The external controller detects abnormal rhythms and sends light through the body to activate the pacemaker and restore heartbeat. The study demonstrates the device’s effectiveness across animal and human donor hearts.&nbsp;



The development of the pacemaker was led by John A. Rogers, a professor of material science, biomedical engineering, and neurological surgery at <a href="https://www.northwestern.edu/" target="_blank" rel="noreferrer noopener">Northwestern University</a>.&nbsp;



“We have developed what is, to our knowledge, the world’s smallest pacemaker,” said Professor Rogers.



“There’s a crucial need for temporary pacemakers in the context of pediatric heart surgeries, and that’s a use case where size miniaturization is incredibly important. In terms of the device load on the body - the smaller, the better.”



<h2 class="wp-block-heading" id="h-solution-designed-for-newborns">Solution designed for newborns</h2>



Though the light-activated pacemaker can function in patients of all sizes, its miniaturized design was motivated by the needs of <a href="https://www.earth.com/news/infant-speech-is-driven-by-heart-rate-activity/" target="_blank" rel="noreferrer noopener">infants</a>. 



Igor Efimov is a co-leader of the study and experimental cardiologist at Northwestern.&nbsp;



“About 1% of children are born with congenital heart defects. The good news is that these children only need temporary pacing after a <a href="https://www.earth.com/news/worlds-smallest-robot-could-transform-minimally-invasive-surgery/" target="_blank" rel="noreferrer noopener">surgery</a>. In about seven days or so, most patients’ hearts will self-repair. But those seven days are absolutely critical," said Efimov.



Traditional pacemakers require surgery and have wires sticking out of the chest to connect to an external device. When they are no longer needed, the wires are removed - risking bleeding, tissue damage, or even death.



“Wires literally protrude from the body, attached to a pacemaker outside the body,” Efimov explained. “When the pacemaker is no longer needed, a physician pulls it out. The wires can become enveloped in scar tissue. That’s actually how Neil Armstrong died.”



The new injectable pacemaker addresses these risks. All of its components are biocompatible and bioresorbable, meaning they safely dissolve in the body’s fluids without needing surgical removal. Once the device has served its purpose, it simply disappears.



<h2 class="wp-block-heading" id="h-refining-the-light-activated-pacemaker">Refining the light-activated pacemaker</h2>



This innovation builds on <a href="https://www.nature.com/articles/s41587-021-00948-x" target="_blank" rel="noreferrer noopener">earlier work</a> by Rogers and Efimov, who developed a quarter-sized dissolvable pacemaker in 2021. Surgeons asked for a smaller version to allow easier placement and suit the smallest patients.&nbsp;



The original device used near-field communication (NFC), but its antenna limited how small the device could be made. To overcome this, the team replaced the NFC system with a novel light-based mechanism.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2025/04/pacemaker_light-activated_worlds-smallest_heart-health_Northwestern_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2025/04/pacemaker_light-activated_worlds-smallest_heart-health_Northwestern_1s.webp" alt="The tiny pacemaker sits next to a single grain of rice on a fingertip. The device is so small that it can be non-invasively injected into the body via a syringe. Credit: John A. Rogers/Northwestern University" class="wp-image-1964846"/></a><figcaption class="wp-element-caption">The tiny pacemaker sits next to a single grain of rice on a fingertip. The device is so small that it can be non-invasively injected into the body via a syringe. Click image to enlarge. Credit: John A. Rogers/Northwestern University</figcaption></figure>



“Instead of using the radio frequency scheme for wireless control, we developed a light-based scheme for turning the pacemaker on and delivering stimulation pulses to the surface of the heart. This is one feature that allowed us to dramatically reduce the size,” said Professor Rogers.



<h2 class="wp-block-heading" id="h-powered-by-the-body-s-own-fluids">Powered by the body’s own fluids</h2>



The engineers also reimagined how to power the tiny pacemaker. Rather than requiring a battery or external power source, the device uses a simple galvanic cell - a chemical battery formed by two different metals as electrodes.&nbsp;



When the device is inside the body, surrounding biofluids act as the electrolyte, allowing electrical current to flow and stimulate the heart.



“A very tiny light-activated switch on the opposite side from the battery allows us to turn the device from its ‘off’ state to an ‘on’ state upon delivery of light that passes through the patient’s body from the skin-mounted patch,” explained Professor Rogers.



<h2 class="wp-block-heading" id="h-reducing-trauma-and-risk">Reducing trauma and risk</h2>



Using infrared light, which can safely penetrate deep into the body, the wearable controller detects when a patient’s heart rate falls too low. It then triggers a light-emitting diode (LED) to flash on and off at the desired pacing rhythm.&nbsp;



“Infrared light penetrates very well through the body,” Efimov said. “If you put a flashlight against your palm, you will see the light glow through the other side of your hand. It turns out that our bodies are great conductors of light.”



Despite its microscopic size - just 1.8 mm wide, 3.5 mm long, and 1 mm thick - the pacemaker delivers stimulation on par with traditional devices. “The heart requires a tiny amount of electrical stimulation,” Rogers said.&nbsp;



“By minimizing the size, we dramatically simplify the implantation procedures, we reduce trauma and risk to the patient, and, with the dissolvable nature of the device, we eliminate any need for secondary surgical extraction procedures.”



<h2 class="wp-block-heading" id="h-a-new-era-of-heart-care">A new era of heart care</h2>



Because these light-activated pacemakers are so small and wireless, doctors could one day deploy multiple units on different parts of the heart to create more advanced pacing systems. 



Each device could be controlled independently using different light wavelengths, enabling personalized and precisely timed stimulation across the heart’s surface.



“We can deploy a number of such small pacemakers onto the outside of the heart and control each one,” Efimov said. “Then we can achieve improved synchronized functional care.”



Professor Rogers noted that because it’s so small, the pacemaker can be integrated with almost any kind of implantable device.



“We also demonstrated integration of collections of these devices across the frameworks that serve as transcatheter aortic valve replacements to address complications that can occur during a patient’s recovery process," said Rogers.



<h2 class="wp-block-heading" id="h-future-of-bioelectronic-medicine">Future of bioelectronic medicine</h2>



While this breakthrough has clear implications for pediatric heart care, the technology could pave the way for a new generation of bioelectronic medicine.&nbsp;



These tiny, dissolvable devices could one day be adapted to promote nerve and bone regeneration, manage <a href="https://www.earth.com/news/mindfulness-meditation-is-a-powerful-weapon-against-chronic-pain/" target="_blank" rel="noreferrer noopener">pain</a>, support wound healing, and more.



Northwestern engineers shrank the device and removed risks by making it dissolve after use. In doing so, they’ve created a tool that could reshape how doctors care for the heart - from the tiniest patients to adults.



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Click here to <a href="https://youtu.be/j_0hZ8cUwgo" target="_blank" rel="noreferrer noopener">watch a video interview...</a>



The study is published in the journal <a href="https://www.nature.com/articles/s41586-025-08726-4" target="_blank" rel="noreferrer noopener">Nature</a>.



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World's smallest pacemaker is set to revolutionize heart health

In a remarkable medical breakthrough, engineers have developed a light-activated pacemaker so tiny that doctors can inject it into the body through a syringe. Remarkably, the device simply dissolves after it’s no longer needed.&nbsp; Designed for newborns, the pacemaker could transform temporary heart care after congenital defect surgeries. Controlling the heart with light The new pacemaker is smaller than a grain of rice. It's wirelessly activated through pulses of light which are delivered by a soft, wearable device mounted on the patient’s chest. The external controller detects...

An investigation by <a href="https://www.washingtonpost.com/">The Washington Post</a> has revealed that the original draft of a Department of Defense (DOD) document was very straightforward in its references to climate change. By the time the official report was submitted to Congress over a year later, however, the term “climate change” had been omitted 22 times.

<a href="https://reliefweb.int/report/world/department-defense-climate-related-risk-dod-infrastructure-initial-vulnerability">The Climate-Related Risk to DoD Infrastructure Initial Vulnerability Assessment Survey</a> was published in January 2018. Climate change was replaced all but one time with related terms such as “extreme weather,” and was alluded to with phrases such as “planning for and managing risk and uncertainty.”

The document is based on data gathered in the first-ever study to poll officials at different military bases about the impacts of <a href="https://www.earth.com/news/humans-driving-climate-change/">climate change</a>.

John Conger served as a Pentagon official under President Obama and was involved in the initiation of the web-based survey. Conger told The Washington Post that altering the text changes “the feeling of urgency in the report, but not its fundamental conclusion - that our military installations are clearly experiencing climate impacts.”

Out of around 3,500 military sites analyzed in the study, over 700 experienced negative effects from drought, wind, and “non-storm surge related flooding.” 

Although one of the primary focuses of the survey was to assess the threat of sea-level rise at coastal military sites, the subject was never directly addressed in the official Pentagon report.

Vice Admiral Dennis McGinn is a member of the Center for Climate and Security Advisory Board and served as Assistant Secretary of the Navy for Energy, Installations and Environment under President Obama.

“The wordsmithing, not saying ‘climate,’ I could live with that,” Admiral McGinn told the Washington Post. “But taking out … maps of critical areas of flooding, that’s pretty fundamental. And the Arctic, that’s huge, for a lot of reasons, not just for Department of Defense, but for the Coast Guard, and commercial shipping business.”

The censorship of climate change content is nothing new under the Trump administration. Just a year after President Trump took office, “climate change” and “global warming” began disappearing from government websites, including those belonging to the Environmental Protection Agency (EPA).

There has been growing concern about how the deletion of these terms as well as entire pages related to the issue of climate change may affect critical policies. 

The <a href="https://envirodatagov.org/">Environmental Data &amp; Governance Initiative</a> (EDGI) has closely monitored the removal of climate change content from government agency websites. 

The group emphasized that the EPA is restricting access to valuable information for state and local governments and policymakers by overhauling climate change web pages. For example, a website describing Obama's Clean Power Plan was taken down by the EPA.

EDGI <a href="https://envirodatagov.org/wp-content/uploads/2018/01/Part-3-Changing-the-Digital-Climate.pdf">reported</a>: “Months before the EPA’s proposed repeal of the rule, the website was removed and its URL began redirecting to a single page about President’s Trump Executive Order on Energy Independence, which called for a review of the Plan.”

According to EDGI, the alteration of climate change content in federal documents and web pages “extends a longer campaign to ‘manufacture doubt’ on human-caused climate change.”

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Govt report revised to drastically cut mention of climate change

An investigation by The Washington Post has revealed that the...

Days after Hawaii's Kilauea <a href="https://www.earth.com/news/hawaiis-kilauea-volcano-erupts/">volcano erupted</a> on the Big Island, over 1,700 people are still displaced and unsure when they will find out if their homes are in the path of destruction. Some residents of Leilani Estates, one of two subdivisions evacuated, were allowed to return to their homes today to retrieve pets, medicine, and other important belongings.

Richard Rapoza is a spokesperson for the <a href="http://dod.hawaii.gov/hiema/">Hawaii Emergency Management Agency</a>. He told <a href="https://weather.com/">The Weather Channel</a> that the residents “need to get in and out as quickly as possible.” 

Rapoza explained that the slow-moving walls of hot lava are in a relatively confined area. “The biggest danger is exposure to the gas,” he said, warning that masks sold in stores are not effective enough to protect people from the harmful effects of the toxic gas in the area, which contains extremely high levels of sulfur dioxide (SO2).

Emergency personnel are wearing devices that monitor SO2 levels, along with specialized gas masks and equipment. Authorities are warning sightseers to stay away from the region altogether.

Last Thursday’s eruption has been followed by an average of one earthquake per hour, the largest of which was a 6.9 magnitude quake on Friday. According to <a href="https://www.cnn.com/">CNN</a> meteorologist Judson Jones, there were also quakes in the days before the volcano exploded, triggered by magma shifting underground.

Molten lava and toxic gas have been pouring out of a total of ten large cracks, or fissures, that continue to open up on the eastern side of the volcano. Walls of fiery lava are scorching the ground and burning everything in their path, including 26 homes and nine buildings.  

It is unclear when the volcanic activity will end, and experts are warning that it could continue for weeks. Hawaii's Civil Defense Administrator Talmadge Magno said on Sunday, “There's no sign of this slowing down.” 

<a href="https://www.usgs.gov">U.S. Geological Survey</a> volcanologist Wendy Stovall explained that there is more magma present in the system. “As long as that supply is there, the eruption will continue,” said Stovall.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: <a href="https://www.usgs.gov/media/images/view-new-fissure-luana-street-leilani-estates">USGS</a>

Kilauea volcano continues to threaten homes and neighborhoods

Days after Hawaii's Kilauea volcano erupted on the Big Island,...

The Kilauea volcano on Hawaii’s Big Island erupted late Thursday afternoon with lava spewing into residential areas and cutting through the forest. Video footage of the event shows fiery lava flows spewing debris and clouds of ash and smoke. 

Volcanoes are common in <a href="https://www.earth.com/news/hawaii-banning-sunscreens-kill-coral/">Hawaii</a> and Kilauea is one of the most active volcanoes in the world. 

Earlier throughout the week, hundreds of earthquakes were reported in the area of the volcano, the largest being a 5.0 which prompted mandatory evacuations in residential areas near Kilauea. 

Since Monday, hundreds of earthquakes (most at a 2.0) were recorded in the area due to the collapse of a crater floor near the Kilauea. 

The tremors, though mostly small, were a major nuisance to residents nearby. 

“It has now become unnerving," Carol Shepard, a Big Island resident told <a href="https://www.cnn.com/2018/05/04/us/kilauea-volcano-hawaii-earthquakes/index.html">CNN</a>. “It'd be like the house would shake. It'd be like somebody that weighs 300 pounds came in my living room, and jumped up and down.” 

Evacuations were issued for residents of Leilani Estates and Lanipuna Gardens and around 1500 people left their homes as part of the orders. 

The eruption occurred in the lower East Rift Zone of the Kilauea Volcano, according to the <a href="https://volcanoes.usgs.gov/volcanoes/kilauea/status.html">United States Geological Survey (USGS).</a>

The USGS also reported that although the flows are no longer active, there remain concerns about sulfur dioxide, and sulfur gas has been observed in the area near the fissure. 

Exposure to sulfur dioxide can be life threatening and high levels of the toxic gas have been detected.

Evacuees will wait to return until it’s deemed safe, and the volatile nature of the eruption has many wondering if there is more to come in the next few days. 

“This stuff could go on for a couple days, weeks or months,” Leilani Estates residents Maja Stenback told the <a href="https://www.washingtonpost.com/news/morning-mix/wp/2018/05/04/hawaiis-kilauea-volcano-finally-erupts-evacuations-underway-as-lava-threatens-communities/?utm_term=.213fe88448b6">Washington Post</a>. “Just the thought of everything now being gone — it’s just not real yet. Maybe the next time we go there the house might be under 30 feet of lava.”

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Image Credit: Kevan Kamibayashi / <a href="https://www.usgs.gov/">U.S. Geological Survey</a>

Thousands evacuated after Hawaii’s Kilauea volcano erupts

The Kilauea volcano on Hawaii’s Big Island erupted late Thursday...

According to a new report by the <a href="http://who.int/">World Health Organization (WHO)</a>, over 90 percent of humans on Earth are breathing in highly polluted air. In addition, 90 percent of deaths caused by <a href="https://www.earth.com/news/half-americans-air-pollution/">air pollution</a> occur in developing countries.

The WHO collected data from over 4,300 cities in 108 countries, adding more than 1,000 cities to its ambient air quality database since the WHO’s last report two years ago. The WHO now has the world’s biggest database of outdoor air pollution.

Air pollution has been linked to cardiovascular disease, lung cancers, stroke, and respiratory issues. 

“Air pollution threatens us all, but the poorest and most marginalized people bear the brunt of the burden,” said Tedros Adhanom Ghebreyesus, a chief of the WHO in <a href="http://www.who.int/news-room/detail/02-05-2018-9-out-of-10-people-worldwide-breathe-polluted-air-but-more-countries-are-taking-action">a statement</a>.

In 2016 the WHO estimated that air pollution was responsible for the deaths of 4.2 million people, that number has now increased to seven million annually. 

The gap in air quality between affluent and developing countries is only made worse by the fact that more than 40 percent of the world’s population doesn’t have access to clean cooking fuels, which is one of the biggest contributors to household pollution. 

“It is unacceptable that over three billion people -- most of them women and children -- are still breathing deadly smoke every day from using polluting stoves and fuels in their homes,” said Tedros. 

Besides cooking fuels, exposure to outdoor pollution from public transportation, industrial operations, and motor vehicles reportedly kills 4.2 million people every year. 

The majority of these deaths occur in what the WHO calls the Eastern Mediterranean Region, which encompasses the Middle East and North Africa as well as Southeast Asia. 

Air pollution in cities in these regions is sometimes five times more than the WHO’s pollution limits. 

Even though people are gaining access to cleaner fuels and more is being done to reduce pollution, the WHO says it is not enough to keep up with the growing population. 

“Many of the world’s megacities exceed WHO’s guideline levels for air quality by more than 5 times, representing a major risk to people’s health,” said Maria Neira, Director of the Department of Public Health, Social and Environmental Determinants of Health at the WHO. “We are seeing an acceleration of political interest in this global public health challenge. The increase in cities recording air pollution data reflects a commitment to air quality assessment and monitoring. Most of this increase has occurred in high-income countries, but we hope to see a similar scale-up of monitoring efforts worldwide.” 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

WHO report: 90 percent of people breathe highly polluted air

According to a new report by the World Health Organization...

<a href="https://www.epa.gov/">Environmental Protection Agency</a> (EPA) Administrator Scott Pruitt has announced a controversial new rule that places heavy restrictions on which scientific research will be used to inform policies. The proposal has raised concerns that decades of environmental studies, which formed the foundation of <a href="https://www.earth.com/news/epa-clean-air-policies/">clean air</a> and water regulations, could be disregarded.

If the legislation is passed, EPA policies will be based only on scientific studies with data that is reproducible and can be made public. This has sparked outrage from scientists who explain that many crucial public health studies cannot be replicated because it would mean exposing people to harmful contaminants. 

Furthermore, making all data public would compromise the confidentiality of study participants by releasing sensitive information.

Gina McCarthy is a former EPA administrator who now directs the Center for Health and the Global Environment at Harvard University.

 “The best studies follow individuals over time, so that you can control all the factors except for the ones you’re measuring,” McCarthy told the <a href="https://www.washingtonpost.com/">Washington Post</a>. “But it means following people’s personal history, their medical history. And nobody would want somebody to expose all of their private information.”

Earlier this week, 985 scientists aligned with the Union of Concerned Scientists signed a <a href="https://s3.amazonaws.com/ucs-documents/science-and-democracy/secret-science-letter-4-23-2018.pdf">letter</a> to Pruitt, urging him to stop pursuing the new restrictions.

“EPA can only adequately protect our air and water and keep us safe from harmful chemicals if it takes full advantage of the wealth of scientific research that is available to the agency,” the letter states.


Before President Trump put him in charge of the EPA, Scott Pruitt sued the agency 13 times as Oklahoma's attorney general to block clean air and water policies. Like Trump, the EPA administrator has been very vocal about his doubt for climate science.

While the EPA is describing its proposed rule as a push for transparency, critics are warning that the outcome will be anything but transparent.

The letter composed by the Union of Concerned Scientists suggests that the real motivation behind the legislation is to make it easier for “political interference in science-based decision making.”

“The result will be policies and practices that will ignore significant risks to the health of every American.”

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Pruitt proposes new rule to limit what research the EPA can use

Environmental Protection Agency (EPA) Administrator Scott Pruitt has announced a...

<a href="https://www.earth.com/plants/calonema-echidnachila/">DNA</a> is typically thought of as having the familiar double-helix shape, and almost all living shapes on Earth have DNA in their cells.

But in an exciting new discovery, researchers have identified an elusive new structure of DNA called the “i-motif” for the first time in living cells.

The study was conducted by researchers from the <a href="https://www.garvan.org.au/">Garvan Institute of Medical Research</a> and published in the journal Nature Chemistry.

The double-helix chemical structure of DNA was first discovered in 1953 by scientists James Watson and Francis Crick.

Now, the double helix is not the only form of DNA as the i-motif has more of a twisted knot shape. The knot shape has been observed in other studies, but never before in living cells.

“When most of us think of DNA, we think of the double helix,” Daniel Christ, a leader of the research said in a statement. “This new research reminds us that totally different DNA structures exist – and could well be important for our cells.”

While the researchers are still not sure what the i-motif’s purpose is, the finding may help with interpreting DNA sequences. 

To confirm the presence of i-motifs in living cells, the researchers created tiny probes made of antibodies that were engineered to bind to the knotted shapes.  The researchers dyed the probes with a fluorescent color in order to locate the antibodies within the cell. 

I-motifs were found in every type of human cell the researchers used in the study. 

The researchers also noticed that the green spots, the i-motifs, disappeared and reappeared in the cells. 

“We think the coming and going of the i-motifs is a clue to what they do,” said Mahdi Zeraati, the lead author of the study. “It seems likely that they are there to help switch genes on or off, and to affect whether a gene is actively read or not.”

The research opens new doors to future studies on i-motifs that will hopefully reveal more about the structure and its purpose. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Scientists discover new form of DNA in human cells

DNA is typically thought of as having the familiar double-helix...

Extreme drought conditions and high winds are fueling the rapid spread of <a href="https://www.earth.com/news/wildfires-southern-california/">wildfires</a> in western Oklahoma. Two people have lost their lives and dozens of homes have been destroyed as the fires continue to grow.

The largest of the wildfires, the Rhea Fire, has now burned close to 300,000 acres and is only around 10 percent contained. Across several communities in Dewey County, 50 homes and hundreds of buildings have been consumed by the massive fire.

An official from Woods County, Oklahoma, told the <a href="https://www.ap.org/en-us/">Associated Press</a> that the number of cattle killed in the state is at least in the hundreds. Pastures have been demolished by the fires, creating an urgent need for hay to feed the surviving cattle.

The National Weather Service issued a Red Flag Fire Warning for parts of western Oklahoma on Wednesday, and a state of emergency was declared for 52 counties.

Shawna Hartman, a spokesperson for the Oklahoma Forestry Service, told <a href="https://www.buzzfeed.com/news">BuzzFeed News</a> that the weather conditions have now reached “historic” levels after no rain has fallen in the region for 150 days. 

BuzzFeed is also reporting that 18 percent of Oklahoma is experiencing exceptional drought, which is the most severe classification of drought, and these areas have been hit the hardest by the wildfires. Dry vegetation is facilitating the rapid spread of fire along with low humidity and high winds. 

Fire danger warnings are in place for parts of Kansas, New Mexico, Texas, and Colorado as well, where the current weather conditions are conducive to fires starting and spreading very quickly.

Rain is in the forecast for western Oklahoma beginning Friday, and may provide some much-needed relief for hundreds of firefighters and members of the National Guard who are tirelessly battling the fires.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: <a href="https://www.flickr.com/photos/pierre_markuse/26623971797/in/album-72157665823633997/">Pierre Markuse/ Flickr</a>/ESA Copernicus Sentinel-2A

Explosive wildfires continue to rage across western Oklahoma

Extreme drought conditions and high winds are fueling the rapid...

The Federal Emergency Management Agency (FEMA) released its four-year action plan on Thursday without a single mention of <a href="https://www.earth.com/news/humans-driving-climate-change/">climate change</a> or global warming. In fact, the <a href="https://www.fema.gov/strategic-plan">strategic plan</a> excludes any and all terminology that relates to climate science, such as extreme weather or sea-level rise.

The FEMA 2018-2022 Strategic Plan briefly alludes to the challenges of climate change, stating that as “natural and manmade hazards become increasingly complex and difficult to predict, the need for forward leaning action is greater than ever before.” The document also refers frequently to “pre-disaster mitigation.”

The first goal that is outlined in the plan is “building a culture of preparedness,” in which the agency notes that we must learn from past disasters. There is a growing collection of scientific evidence that shows extreme weather events are becoming more frequent, more intense, and lasting longer because of climate change. 

In 2017, “there were 16 weather and climate disaster events with losses exceeding $1 billion each across the United States,” according to the <a href="http://www.noaa.gov/">National Oceanic and Atmospheric Administration</a> (NOAA).

Even if climate change was not the direct cause of the devastating 2017 hurricane season, for example, scientists have explained how global warming increased the intensity of the storms. Warmer ocean temperatures provide the energy that hurricanes need to continue moving and gaining strength.

FEMA's new plan states: “Disaster costs are expected to continue to increase due to rising natural hazard risk, decaying critical infrastructure, and economic pressures that limit investments in risk resilience.” Yet, there is no reference to what may be driving an increased risk in natural hazards.

The last FEMA plan, which was issued when Barack Obama was president, directly addressed the issue of climate change when discussing risk assessment. 

The document stated: “FEMA will also ensure that future risks, including those influenced by climate change, are effectively integrated into the Agency’s risk assessment resources and processes.”

This is not the first agency under President Trump, who is vocal about his doubt for climate science, to remove climate change terminology from official documents. Last year, the Environmental Protection Agency, the Department of Energy, the Department of Agriculture, and the Department of Health and Human Services all removed such language from their websites.

--

By <a href="http://ceexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

FEMA’s four year action plan completely excludes climate change

The Federal Emergency Management Agency (FEMA) released its four-year action...

The North Pole nearly reached its melting point over the weekend after a massive storm generated a heat surge in the Greenland Sea. During what should be the coldest part of the year, experts have estimated that the temperature reached over 50 degrees warmer than usual in some regions of the <a href="https://www.earth.com/news/arctics-mammal-global-warming/">Arctic</a>.

According to the U.S. Global Forecast System model, the temperature spiked as high as 35 degrees Fahrenheit at the North Pole. Zack Labe, a climate scientist and PhD student at the <a href="https://uci.edu/">University of California at Irvine</a>, said that the warm air intrusion penetrated right through the heart of the Central Arctic.

Warm air intrusions, which occur when relatively mild air is carried north by mid-latitude storms, were once a rare event in the Arctic. An <a href="https://www.researchgate.net/publication/318328090_Increasing_frequency_and_duration_of_Arctic_winter_warming_events">investigation</a> led by Robert Graham at the <a href="http://www.npolar.no/en/">Norwegian Polar Institute</a> found that Arctic warming has become much more frequent and intense in the last few decades.

Graham pointed out that extreme warming events have now occurred four out of the last five winters in the Arctic. He explained that this heightened frequency is directly related to thinning sea ice.

“As the sea ice is melting and thinning, it is becoming more vulnerable to these winter storms,” said Graham. “The thinner ice drifts more quickly and can break up into smaller pieces. The strong winds from the south can push the ice further north into the Central Arctic, exposing the open water and releasing heat to the atmosphere from the ocean.”

Scientists were recently shocked to find an area of open water north of Greenland where the some of the oldest and thickest Arctic sea ice used to be.

In the Arctic, temperatures are rising twice as fast as the global average. The entire area of the globe north of 80 degrees latitude reached an average of 36 degrees hotter than usual this month - the highest mean temperature ever recorded in the Arctic region.

In an interview, Zack Labe referenced a dataset from the Danish Meteorological Institute that dates back to 1958. “No other warm intrusions were very close to this,” he said. “I was taken by surprise how expansive this warm intrusion was.”

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

North Pole temps rise above freezing in the middle of winter

The North Pole nearly reached its melting point over the...

From <a href="https://www.earth.com/news/national-parks-trump-ghost-teddy-roosevelt/">slashing</a> national parks and monuments to doubting the <a href="https://www.earth.com/news/global-warming-trump-tweets/">facts</a> of climate change, President Donald Trump has been at odds with the science community ever since he took office.

Now, the <a href="https://www.washingtonpost.com/news/the-switch/wp/2018/02/11/the-trump-administration-wants-to-turn-the-international-space-station-into-a-commercially-run-venture/?utm_term=.4c4e1eb3c9de">Washington Post</a> is reporting that the Trump administration aims to cut funding for the International Space Station (ISS) and privatize the orbiting laboratory.

According NASA documents obtained by Washington Post, federal funding for the ISS would end in 2024, and the government would then turn it over to the private sector. According to one document:

“The decision to end direct federal support for the ISS in 2025 does not imply that the platform itself will be deorbited at that time — it is possible that industry could continue to operate certain elements or capabilities of the ISS as part of a future commercial platform. NASA will expand international and commercial partnerships over the next seven years in order to ensure continued human access to and presence in low Earth orbit.”

The plans to flip the International Space Station to the private sector will almost certainly be met with opposition from both sides of the aisle. While the science community will no doubt cite the priceless information collected by the ISS, conservative politicians have already referenced the significant cost already spent on the laboratory.

Republican Senator Ted Cruz said the decision was made by “numbskulls” at the Office of Management and Budget.

“As a fiscal conservative, you know one of the dumbest things you can to is cancel programs after billions in investment when there is still serious usable life ahead,” Senator Cruz said.

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By <a href="mailto:rarnold@earth.com">Rory Arnold</a>, <a href="http://earth.com">Earth.com</a> Staff Writer

Trump admin wants to privatize the International Space Station

From slashing national parks and monuments to doubting the facts...

The Trump administration plans to slash the Department of Energy’s renewable energy programs by 72 percent, according to a new report from the <a href="https://www.washingtonpost.com/business/economy/white-house-seeks-72-percent-cut-to-clean-energy-research-underscoring-administrations-preference-for-fossil-fuelsv/2018/01/31/c2c69350-05f3-11e8-b48c-b07fea957bd5_story.html?utm_term=.93a53e7d7343">Washington Post</a>.

The administration’s new budget for the 2019 fiscal year is will be released next month, and further underscores their commitment to fossil fuels and blatant disregard for the effects of climate change.

Just last night, during his State of the Union address, Trump made mention of what he called “beautiful clean coal,” despite the dirty nature of the rock itself and the damage it causes to the environment. 

As we reported <a href="https://www.earth.com/news/trump-confuses-climate-change/">last week</a>, during an interview with Piers Morgan, Trump confused climate change facts in an embarrassing commentary. “There is a cooling, and there’s a heating,” Trump said. “I mean, look, it used to not be climate change, it used to be global warming. That wasn’t working too well because it was getting too cold all over the place.”

Then there was his now-infamous tweet during a January cold spell:

“In the East, it could be the COLDEST New Year’s Eve on record. Perhaps we could use a little bit of that good old Global Warming that our Country, but not other countries, was going to pay TRILLIONS OF DOLLARS to protect against,” <a href="https://twitter.com/realdonaldtrump/status/946531657229701120">Trump tweeted</a>. “Bundle up!”

Of course, by this point, few environmentalists are surprised by the president’s lack of information or concern for the health of the Earth. The good news is that Congress will likely revise the the proposed budget to offset some of the deep cuts to renewable energy research. 

In addition, new research has found that the power of <a href="https://www.earth.com/news/divestment-fossil-fuels/">divestment</a> from fossil fuels could help reduce greenhouse gas emissions in the absence of governmental regulation.

--

By <a href="mailto:rarnold@earth.com">Rory Arnold</a>, <a href="http://earth.com/staff">Earth.com</a> Staff Writer

Source: <a href="https://www.washingtonpost.com/business/economy/white-house-seeks-72-percent-cut-to-clean-energy-research-underscoring-administrations-preference-for-fossil-fuelsv/2018/01/31/c2c69350-05f3-11e8-b48c-b07fea957bd5_story.html?utm_term=.93a53e7d7343">Washington Post</a>

Trump admin aims to cut clean energy research by 72 percent

The Trump administration plans to slash the Department of Energy’s...

In an interview with Piers Morgan for British television station <a href="https://www.itv.com/">ITV</a>, President Donald Trump once again reminds the world that he does not take climate change seriously. 

When asked about the existence of <a href="https://www.earth.com/news/humans-driving-climate-change/">climate change</a>, the President said: “There is a cooling, and there’s a heating. I mean, look, it used to not be climate change, it used to be global warming. That wasn’t working too well because it was getting too cold all over the place.”

President Trump, who often accuses the media of sharing fake news, does not seem to have his own facts straight on the subject of climate change, which is a regional or global change in climate patterns that is largely attributed to carbon dioxide emissions. 

While the President suggests that climate change and global warming are interchangeable terms, they are not. According to the <a href="http://www.noaa.gov/">National Oceanic and Atmospheric Administration</a> (NOAA), “global warming is one symptom of the much larger problem of human-caused climate change.”

Another reality that the President seems to be confused about is that Arctic sea ice reached record lows in 2016 and 2017. Trump said in the interview: “The ice caps were going to melt, they were going to be gone by now, but now they’re setting records. They’re at a record level.”

Last month, the Trump administration removed climate change from the country's National Security Strategy (NSS), claiming that it does not pose a threat to the United States. Prior to this, President Trump’s withdrawal from the Paris Accord shocked leaders and activists across the globe.

President Trump told Piers Morgan that the Paris Agreement would have been a disaster for the United States. However, the President did admit that there could be a way back for the United States.

“I believe in clean air. I believe in crystal-clear, beautiful… I believe in just having good cleanliness in all. Now, with that being said, if somebody said go back into the Paris accord, it would have to be a completely different deal because we had a horrible deal,” said Trump.

President Trump: The Piers Morgan Interview was produced by ITV Studios Daytime and also by Morgan's company, Ferret Productions.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Trump confuses climate change facts in new interview

In an interview with Piers Morgan for British television station...

Scientists are transforming chocolate into a functional food by infusing it with probiotics and prebiotics, aiming to create a treat that satisfies cravings while supporting gut health. 



The challenge lies in maintaining chocolate's beloved texture and flavor while adding health benefits.



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Probiotics - beneficial microbes that balance gut bacteria and aid digestion - are typically fragile and can be destroyed by stomach acid or processing. 



Prebiotics act as food for these microbes, helping them thrive. Together, they form "synbiotics," a powerful health combination.



Researchers Smriti Gaur and Shubhi Singh from India's Jaypee Institute of Information Technology took an innovative approach, using natural prebiotics like corn and honey instead of complex processing methods. 



They created five chocolate varieties: a control and four synbiotic versions containing different combinations of prebiotics, probiotics (Lactobacillus strains), and flavor enhancers (cinnamon or orange).



Laboratory simulations of human digestion showed the probiotics remained viable for over five hours, suggesting they could survive long enough to benefit gut health.



Taste tests were positive, with researchers particularly enjoying the orange-flavored variety, describing it as having "vibrant citrus notes" complementing the "rich cocoa" with a "luxurious" texture.



This research represents just the beginning. With further refinement of strains, textures, and flavors, chocolate could evolve beyond mere indulgence to become a functional food that nourishes while it delights.



The study is published in the journal <a href="https://pubs.acs.org/doi/10.1021/acsfoodscitech.4c00741" target="_blank" rel="noreferrer noopener">ACS Food Science &amp; Technology</a>.

Is chocolate the next nutritional powerhouse?

Scientists are transforming chocolate into a functional food by infusing...

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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



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

Nushagak Bay in southwest Alaska

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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;



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



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

Flu viruses are more flexible than expected

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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;



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

Lake Trasimeno in Central Italy

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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;



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



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

Detecting mercury contamination with the tap of a finger

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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



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



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

How does salt makes things taste better?

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

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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



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



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

Santiago, Chile in South America

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

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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;



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



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

Interactive map of the universe includes 200,000 galaxies

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



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



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



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



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



Video Credit: ESA&nbsp;&nbsp;



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



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

Lesotho: Africa's "Kingdom in the Sky"

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Today's Video of the Day from 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;



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



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

The city of Dublin on Ireland's east coast

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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



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



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

The province of Zaragoza in northeast Spain

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



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



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



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



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



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



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



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



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



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



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

The rapid retreat of the Columbia Glacier

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Today’s Video of the Day from 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



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



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

The Pyrenees Mountains in southwest Europe

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

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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)



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



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

Two distant planets may be "water worlds"

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

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



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



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



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



Video Credit: NASA Goddard&nbsp;



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



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

Satellites reveal how Earth's systems are interconnected

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

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



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



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



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



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



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



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



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...

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



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



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



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



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



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



Video Credit: ESA&nbsp;



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



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

Melt ponds on the Greenland Ice Sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes a new map of Mars that is providing insight into the planet’s watery past. The map also reveals where future missions could safely land on Mars.&nbsp;



The map has been created over the last decade using observations of water-rich rocks and mineral deposits. The images were captured by ESA’s Mars Express and NASA’s Mars Reconnaissance Orbiter.



"A big surprise is the prevalence of these minerals, with the map revealing hundreds of thousands of water-affected locations in the oldest parts of the planet," says ESA. "The new data will help answer exciting questions about Mars’ climate history, whether water was globally persistent or confined to short, intense episodes, and whether the conditions were ever suitable for life."



"Specifically, the map shows the locations and abundances of aqueous minerals. These are from rocks that have been chemically altered by the action of water in the past, and have typically been transformed into clays and salts."



According to John Carter of the Institut d’Astrophysique Spatiale (IAS), our collective understanding of Mars has been oversimplified. He explained that planetary scientists have tended to think that only a few types of clay minerals on Mars were created during its wet period, then as the water gradually dried up, salts were produced across the planet.



The new map shows that the composition of Mars is much more complicated than what we thought. For example, while many salts formed after Martian clays, there are some salts that are presumed to be older than some of the clays.&nbsp;



“The evolution from lots of water to no water is not as clear cut as we thought, the water didn’t just stop overnight. We see a huge diversity of geological contexts, so that no one process or simple timeline can explain the evolution of the mineralogy of Mars. That’s the first result of our study. The second is that if you exclude life processes on Earth, Mars exhibits a diversity of mineralogy in geological settings just as Earth does,” said Carter.



Video Credit: ESA



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



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

The history of Mars is much more complex than we thought

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Today's Video of the Day from the <a href="https://www.stowers.org/">Stowers Institute for Medical Research</a> describes how cavefish adapted to a sedentary lifestyle over tens of thousands of years. 



The experts found that the muscle metabolism of cavefish has been genetically reprogrammed over time. As a result, the animals have experienced major changes in their morphology and behavior. Despite these changes, however, the cavefish remain healthy and fit.



The research may provide new clues about the evolutionary consequences of prolonged physical inactivity in humans.&nbsp;



“It’s no surprise that people are moving less and less as technology has advanced,” said Rohner. “With cavefish, we have a unique system where we can study what might happen if people remained couch potatoes over very, very long periods of time.”



Video Credit: Stowers Institute for Medical Research



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



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

Cavefish are healthy despite their sedentary lifestyle

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> some of the most incredible waves in the world, as seen by Landsat satellites.



"With more than 370,000 miles of coastline on Earth, there are plenty of places where epic waves build up, curl over, and hurtle toward the shore.- much to the thrill of surfers," says NASA. "There are some places where these waves are so magnificent that they can be seen from space."



"With the broad perspective of satellites, we can see how these iconic waves develop into the world’s tallest, longest, fastest, and heaviest."



Video Credit: NASA Earth Observatory&nbsp;



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



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

Satellites capture the world's biggest and fastest waves

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