The Pentagon and the Energy Department have airlifted a small nuclear reactor from California to Utah, demonstrating what they say is potential for the U.S. to quickly deploy nuclear power for military and civilian use.

Legal experts say a criminal investigation announced into whether negligence played a role in a deadly California avalanche could hinge on key decisions by guides leading the ill-fated ski trip.

The Trump administration says it supports a strict Biden-era rule that forces cities to replace most lead water pipes within 10 years.

Giant tortoises have returned to Floreana Island in Ecuador's Galapagos archipelago as conservationists release 158 juvenile hybrids to restore the ecosystem.

El Nino warps weather worldwide.

A video of Reggae, a 33-year-old Atlantic harbor seal at the New England Aquarium, hugging and fetching a rubber duck has drawn attention on social media.

The Environmental Protection Agency on Friday weakened limits on mercury and other toxic emissions from coal-fired power plants.

Safely disposing of household batteries is good for the home and good for the environment.

A new AP-NORC poll shows more Americans say extreme cold has affected their lives after frigid weather engulfed much of North America at the beginning of 2026.

The Trump administration’s revocation of a scientific finding that climate change is a danger to public health is likely to affect communities of color the most.

Officials are working to lower the risks of more deadly slides in the area where an avalanche struck in California’s Sierra Nevada.

The recovery of skiers killed in the deadliest U.S. avalanche in almost 45 years is dragging out because of what experts say is a prime rule for rescuers: Don’t make yourself a victim.

The six women killed in an avalanche in California’s Sierra Nevada were among a group of eight close friends and experienced backcountry skiers on a trip together.

Hawaii lawmakers are weighing tougher ways to deal with feral chickens, as residents complain about noise, mess, and growing flocks.

Experts say a weekslong “snow drought” in Norther California's Sierra Nevada helped set the stage for Tuesday's deadly avalanche, after several feet of new snow fell on an earlier layer that had hardened.

A new study shows hot, dry and windy weather that fuels extreme wildfires has nearly tripled worldwide in 45 years.

Fur coats are plentiful on the streets of Cortina, especially during these Winter Games.

A coalition of authorities is deploying technology to try to locate the wreck of a fishing boat that sank last month off Massachusetts, killing all seven aboard.

The backcountry trip near Lake Tahoe where eight skiers were killed after an avalanche was led by a tour outfit that promises global mountain adventures including skiing and rock climbing in the wilderness.

Some Republican legislators are pushing to limit state environmental regulations.

Animal behaviorists partnering with the Palm Beach Zoo & Conservation Society in Florida traveled to Africa in August to help an endangered white rhino with a life-threatening, parasitic eye infection.

A coalition of health and environmental groups is suing the Environmental Protection Agency, challenging the rescinding of a scientific finding that has been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change.

Authorities say the bodies of eight backcountry skiers have been found and one remains missing after an avalanche near Lake Tahoe in California.

Team USA skiers Lindsey Vonn and Mikaela Shiffrin, along with Italy’s Federica Brignone, are among the many skiers who have expressed concern during these Olympic Games about the accelerating melt of the world’s glaciers.

A marine researcher says he has video evidence of the first recorded shark in the Antarctic Ocean.

Authorities say six backcountry skiers are alive and 10 others are missing after an avalanche in Northern California that occurred during a powerful winter storm moving through the state.

Conservation and historical organizations are suing the Trump administration over National Park Service policies that the groups say erase history and science from America’s national parks.

California is being walloped by a powerful winter storm carrying thunderstorms, strong winds and heavy snow in the mountains.

An injured seabird sought help by pecking on a German hospital’s emergency room door.

Despite seeing thunderstorms on Sunday, the rain barely made a dent in the drought across Northeast Florida and Southeast Georgia, and officials are urging residents to do their part to help reduce the risk of wildfires.

Singapore is piloting the world’s first sustainable aviation fuel levy.

A strong storm system has brought tornado watches and damage in parts of the Southeast just as the Northeast starts to warm up.

It is Carnival season in New Orleans.

The seven Western states that depend on the Colorado River have missed a deadline for the second time to agree on a plan addressing record drought and water shortages.

The U.S.’s ocean regulator plans to make industry-friendly changes to a longstanding rule designed to protect vanishing whales.

The Trump administration is urging other nations to press a tiny Pacific island country to withdraw a United Nations draft resolution supporting strong action to prevent climate change, including reparations for damage caused by any nation that fails to take actiom.

Cocoa prices have fallen nearly 70% since last Valentine’s Day, but that won’t make heart-shaped boxes of chocolate or even chocolate Easter bunnies more affordable this year.

In the wetlands of coastal southeast Louisiana, conservation groups are wrapping up a four-year project to plant 30,000 trees.

California photographer and conservationist Krystle Hickman is on a quest to document hundreds of species of native bees, which are under threat by climate change and habitat loss, some of it caused by the more recognizable and agriculturally valued honey bee.

Thailand has begun using a birth control vaccine on elephants in the wild to try curb a growing problem where human and animal populations encroach on each other.

The Trump administration has revoked a scientific finding that climate change is a danger to public health, an idea that President Donald Trump called “a scam.”.

California’s top prosecutor is opening a civil rights investigation into how delayed evacuations impacted a historically Black community ravaged by one of the January 2025 Los Angeles-area wildfires.

The Environmental Protection Agency says it is ending credits to automakers who install automatic start-stop ignition systems in their vehicles.

President Donald Trump has nominated for director of the National Park Service an executive from a hospitality company that has extensive contracts with the agency he would lead.

A new study says genetic testing can speed the return of the American chestnut tree that once dominated Eastern U.S. forests.

The Environmental Protection Agency has revoked a key scientific finding that supported U.S. regulations on greenhouse gas emissions.

Last year, an explosion at U.S. Steel’s Clairton Coke Works outside Pittsburgh killed two U.S. Steel workers and injured 11 others, including contractors.

Everyday lifestyle choices can add up to significant climate impact when even a small share of the population makes them.

The build-out of electric vehicle charging in the U.S. has not stopped since President Donald Trump returned to office.

Portuguese Interior Minister Maria Lúcia Amaral has resigned amid criticism of her government's response to recent winter storms.

Authorities in Madagascar say at least 31 people have died after Tropical Cyclone Gezani hit the large Indian Ocean island.

Temperatures in northern Europe have been so low that Estonians can now drive across a 12 1/2-mile stretch of frozen sea.

The White House says the Trump administration will revoke a scientific finding that long has been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change.

Except for California, most Western states are experiencing the worst snow drought in decades, not because of dry conditions but really warm temperatures that change snow to rain.

A new study from the University of Florida has revealed that two invasive species of termites in Florida have begun to spread farther than experts previously predicted.

Olympic fans came to Cortina with heavy winter coats and gloves.

A coalition of nations and environmental groups is lobbying the International Maritime Organization to create regulations around black carbon, or soot, that spews from ships and blankets parts of glaciers and snow.

Italian Premier Giorgia Meloni has condemned recent anti-Olympics protests in Milan.

President Donald Trump has signed an executive order reopening a huge swath of the Atlantic to commercial fishing.

Nearly two weeks after a massive storm left much of Mississippi covered in ice, some people are still without power.

The Trump administration says its emergency orders keeping coal-fired plants running helped prevent blackouts during the recent cold snap.

The magic behind millions of romantic Valentines Day bouquets happens in a cargo warehouse at a South Florida airport.

FEMA is resuming staff cuts that were paused during January's severe winter storm, according to two FEMA managers.

Energy Star, the program that helps guide consumers to more energy-efficient appliances and electronics, has survived President Donald Trump’s attempt to kill it.

Ramón Pucha ventures into the Ecuadorian Amazon jungle to collect seeds from endangered plant species.

Farmers in Louisiana are going toe-to-toe with some nasty enemies: apple snails that clog crawfish traps while laying millions of bubblegum-colored eggs and tiny bugs called delphacids that can wipe out half a rice field while spreading plant disease.

The Milan Cortina Winter Olympics are highlighting the contrast between the two host cities.

Trump administration officials traveled to Los Angeles to outline the president’s plan to override state and local rules and speed up the permitting process for reconstruction of tens of thousands of homes destroyed by last year’s wildfires.

A new study out in the journal Science Advances finds that chronic exposure to wildfire smoke has contributed to tens of thousands of deaths each year in the United States.

Firefighters came to the rescue of a swan found stuck in a frozen Connecticut river this week.

The healthiest and most climate-conscious food is local, and organic, and in-season.

Are you spending more time inside this winter? Consumer Reports says improving indoor air quality can make a real difference. CR experts share simple ways to reduce indoor pollution plus the top-performing air purifiers from CR’s exclusive lab tests.

Both directions of State Road 20 in Putnam County were closed early Wednesday due to “extremely heavy smoke in the area,” prompting Robert H. Jenkins Jr. Elementary and Interlachen Jr.–Sr. High School to close for the day, according to the sheriff’s office.

Staging future Winter Games as early as January and the Paralympic Winter Games in February is a possibility because of warmer temperatures, the International Olympic Committee says.

Kenya is rolling out tax breaks to encourage use of electric vehicles.

Mexican long-nosed bats have a taste for agave nectar, fueling their migration from Mexico to the U.S. each summer.

The frigid weather gripping much of America is not unprecedented, but it feels that way.

China has significantly increased its coal power capacity, reviving concerns about its climate-changing carbon emissions.

MAHA activists who want to hold corporations accountable for harming Americans’ health have found an unlikely ally in a Republican-led Environmental Protection Agency that has traditionally supported big businesses and less regulation.

People in North Carolina are digging out from a foot or more of snow and Florida farmers need their frozen plants to thaw before they can assess the damage.

A federal judge has ruled that an offshore wind project aimed at powering 600,000 New York homes can resume construction.

A 250-year-old live oak, a landmark in an Atlantic Beach neighborhood, was recently cut down, leaving neighbors saddened and concerned about preserving the city’s historic trees.

Punxsutawney Phil, the legendary groundhog that lives in a tree stump in rural Pennsylvania, has issued the most highly anticipated weather forecast of the season: six more weeks of winter.

Forecasters warned that dangerous extra-cold conditions will persist for a huge swath of the U.S. from the Gulf Coast into New England.

Researchers at Washington State University and the Alaska Department of Fish and Game are using collar cams to study a remote population of grizzly bears on Alaska's North Slope.

A former Sierra Club Foundation employee is suing the nonprofit, alleging that normal workplace interactions got twisted into an unfair harassment complaint to force him out after he called out racial discrimination internally.

Meteorologists sometimes warn of a winter storm that could “bomb out” or become a bomb cyclone.

A “bomb cyclone” is starting to bring heavy snow to the Southeast and is ushering in frigid temperature to much of East Coast Saturday.

Wildlife officials say a large exotic lizard was found buried in the snow in Rhode Island.

Florida won’t be getting hit with massive blankets of snow and ice like the rest of the U.S., but even frosty windshields and a few flurries can feel like Antarctica to people with permanent sandal tans.

Frustrations are bubbling up for the tens of thousands that have been without power for nearly a week in the U.S. South as a new storm looms.

Scientists on a research vessel off the California coast are marveling at a rare find — a waved albatross was spotted soaring over the Pacific.

The Florida Fish and Wildlife Conservation Commission is investigating the reported deaths of dozens of vultures at Blue Spring State Park, according to an FWC spokesperson.

Researchers say human-induced climate change worsened recent torrential rains and floods in southern Africa.

The Trump administration is taking a step toward rolling back a rule that limits smokestack emissions that burden downwind areas in neighboring states.

A federal judge has refused to block a winter oil and gas exploration project in the National Petroleum Reserve-Alaska that opponents said was improperly analyzed by the federal government.

King Charles III is clearly thinking about his legacy.

Winter's brutal grip on the U.S. East will continue in the coming days, with subfreezing temperatures reaching into Florida and a potential blizzard threatening the Atlantic coast.

Getting outdoors to enjoy simple pleasures is unlikely to be front of mind for people in a 1,300-mile stretch of the United States where a massive weekend storm brought deep snow and bitter cold.

A court has ordered the Dutch government to draw up a plan to protect residents of the Caribbean island of Bonaire from the devastating effects of climate change.