President Joe Biden's administration has finalized regulations that protect hundreds of thousands of small streams, wetlands and other waterways, repealing a Trump-era rule that federal courts had thrown out and that environmentalists said left waterways vulnerable to pollution.

The rule defines which "waters of the United States" are protected by the Clean Water Act. For decades, the term has been a flashpoint between environmental groups that want to broaden limits on pollution entering the nation's waters and farmers, builders and industry groups that say extending regulations too far is onerous for business.

Kiara, a six-month-old black panther born in war-torn Ukraine and victim of exotic animal trafficking, has found a new home at a wildlife refuge in France.  

The world is getting warmer, winters included. The United States, however, has experienced severe winter storms in recent years, and experts are taking a closer look at the link between these extreme cold events and climate change.

Catastrophic floods, crop-wilting droughts and record heatwaves this year have shown that climate change warnings are increasingly becoming reality and this is "just the beginning," experts say, as international efforts to cut planet-heating emissions founder.

Kuwait, one of the hottest countries on Earth, has been hit by a rare hail storm that delighted children and their parents, with images of the winter white shared widely on social media Wednesday. 

Top officials at high-stakes U.N. biodiversity negotiations have said they were confident of securing a major deal to save the natural world from destruction.

The extreme cold weather hitting North America in the run-up to Christmas holidays is due to a phenomenon called a "bomb cyclone."

For thousands of years, predictions of apocalypse have come and gone. But with dangers rising from nuclear war and climate change, does the planet need to at least begin contemplating the worst?

When the world rang in 2022, few would have expected the year to feature the U.S. president speaking of the risk of doomsday, following Russia's threats to go nuclear in its invasion of Ukraine.

Buffalo residents have hovered around space heaters, hunted for cars buried in snow drifts and looked for more victims, after 28 people died in one of the worst weather-related disasters ever to hit western New York.

The rest of the United States also was reeling from the ferocious winter storm, with at least another two dozen deaths reported in other parts of the country.

A brutal winter storm has brought Christmas Day danger and misery to millions of Americans as intense snow and frigid cold gripped parts of the eastern United States, with weather-related deaths rising to at least 32.