Melting permafrost in the Arctic is releasing toxic mercury into the water system, potentially impacting the food chain, scientists say.

Alabama's Mobile-Tensaw Delta is a lush, vibrant and surprisingly intact more than 400-square-mile (1,036-square-kilometer) expanse of cypress swamps, oxbow lakes, marshland, hardwood stands and rivers

Climate change is leading to flooding even without big storms.

National polls found that Americans on both sides of the political aisle rank climate change initiatives as a far lower policy priority than other ballot issues.

Earth experienced its two warmest days on record globally, and it's becoming likely that 2024 will end up as the warmest year on record, according to a new report.

Ocean temperatures in the Great Barrier Reef reached the highest they’ve been in 400 years over the past decade, research published Wednesday in the journal Nature found

Tick populations could see a "boom" in traditionally cooler regions should global temperatures continue to rise.

Tick populations could see a "boom" in traditionally cooler regions should global temperatures continue to rise.

Climate and environmental advocacy groups say Minnesota Gov. Tim Walz has a record of pushing for policies to mitigate climate change in his state.

Fossils in the Arctic reflect glacial melting that was possibly not due to human interference, research shows.

The Arctic was once ice-free, and it could happen again -- which would exponentially increase the severity of catastrophic sea level rise, according to new research.

ABC News speaks with UN General Assembly President Dennis Francis about world conflicts, the danger of climate change and his message for the Oval Office's next occupant.

The days of the perfect-looking yard -- often lawns that guzzle copious amounts of water to stay green -- may soon be gone.

ABC News’ Stephanie Ramos speaks with Dr. Debra Hendrickson who warns about the health of children in her book, “The Air They Breathe: A Pediatrician on the Frontlines of Climate Change.”

The planet reached the hottest day on record for the second day in a row, according to preliminary data from Copernicus, Europe's climate change service.

A type of tropical cactus native to the Florida Keys has become the first species in the country to become extinct due to rising sea levels, researchers said.

The rapid decline of the species could signify a similar fate for other plants.

Scientists are discovering more ways global warming is affecting the planet.

The days are getting longer as global temperatures continue to rise, new research shows.

The glaciers on a major Alaskan icefield are melting twice as fast than recorded over a decade ago, with researchers this week saying the rate of ice loss is "incredibly worrying."

Juneau Icefield lies 2,000 feet north of Juneau and extends through the border with British Columbia and is the fifth-largest icefield in North America.

ABC News reports on the dwindling clean water supply in one of the world’s largest cities, forcing many residents to resort to drastic measures.

President Joe Biden and former President Donald Trump are set to take the stage Thursday night in a studio at CNN's Atlanta headquarters.

A new study is adding to the growing body of research showing how much more severe wildfires have become in recent decades.

The vandals were seen spraying orange powder on the prehistoric monument.

Populations of the iconic Joshua tree may be showing signs of recovery after several rounds of unprecedented rain on the West Coast.

A unique population of polar bears is at risk of extinction should ice-free periods continue to get longer, researchers have determined.

Eight climate protesters were arrested after being tackled on the field during the Congressional Baseball Game, U.S. Capitol Police said in a statement.

New climate warnings were announced Wednesday, including that the planet experiencing its warmest May on record -- bringing the tally to twelve record-breaking months.

A new United Nations report warns global temperatures will likely surpass the 2.7-degree increase agreed to in the Paris Climate Accord within the next five years.

Massachusetts could soon become the new leader in climate and environment technology.

On Thursday, Gov. Scott let Vermont's Climate Superfund Act become law without signature.

Images taken in Antarctica and the Galapagos islands are currently scattered throughout the merchandise displays at Prada's New York flagship store.

The health effects from extreme heat will soon take an even bigger toll on disadvantaged communities, according to a new report.

ABC News' chief climate correspondent explains how climate change can impact your mental health.

Sue Wicks traded in her sneakers for waders when she became an oyster farmer at 50. Now, she is adding sugar kelp to her farm to help promote biodiversity and improve water quality in Moriches Bay.

In 2023, at least 7.7 million people in 82 countries and territories were living in internal displacement as a result of climate disasters.

With high heats, experts are calling for "urgent action to reduce carbon emissions" after a recent study.

A closer look at tree rings is adding to the growing list of evidence that shows unprecedented temperatures measured on Earth over the past year.

The disproportionate impacts of climate change on the poorest communities are already affecting pockets of the U.S.

The power to make everlasting change for environmental conservation lies within us all.

ABC News chief meteorologist Ginger Zee and her team show you what it takes to produce an Earth Day special.

The first official Arbor Day was celebrated on April 10, 1872, when prizes were offered to communities and individuals who could plant the most trees in a single day.

As EV demand slows, advocates say eFuels could make cars that are already on the road greener.

Residents in some places across the U.S. often don’t understand emergency alerts because the instructions are not in their native languages.

The Arbor Day Foundation has been helping restore hundreds of trees to locations that were affected by severe storms.

Relatively untouched ideas are gaining momentum as potential short-term solutions to lower Earth's temperature.

ABC News' Ginger Zee shows us how coming together can slow climate change, from inside Earthships in New Mexico to California to see controversial new technologies that could cool the Earth.

ABC News' Ginger Zee looks at controversial methods to cool the Earth – like reflecting sunlight – that are gaining support as global temperatures continue to rise.

On Thursday, the Environmental Protection Agency announced a suite of new rules aimed at dramatically reducing pollution from coal and natural gas fired power plants.