Europe recently downgraded the protected status of wolves, sparking concern among conservationists who warn this may undo decades of progress and lead to the species becoming threatened again.

On Tuesday, scientists held an event organized by House Democrats in which they stood in front of posters outlining their work — and the federal cuts that now threaten it.

In an unprecedented move, India held the water treaty in abeyance after blaming Pakistan for a deadly attack in April. Pakistan denies involvement in the attack and accuses India of "weaponizing water."

A beluga whale at Chicago's Shedd Aquarium is the first to successfully recover from general anesthesia in captivity after a surgery to remove a network of cysts.

One hundred years ago, the small town of Dayton, Tenn., became the unlikely stage for one of the most sensational trials in American history, over the teaching of Darwin's theory of evolution.

Level up your knowledge of mosquito bite prevention with our quiz. It's full of surprising, science-backed tactics that may save you from getting eaten alive this summer.

Marine mammal researchers are investigating how sea lions were affected by the longest toxic algal bloom on record off the coast of Southern California. Some sea lions are being released back into the wild.

There was a circle in Maria Burns' yard where grass wouldn't grow and trees died. She knew what it was: An old natural gas well, plugged when she was a little girl, starting to leak again.

The deadly floods in Central Texas were caused by extremely heavy rain. Climate change is causing even more rain to fall during the heaviest storms.

A study from Uganda's Budongo Forest draws on decades of data suggesting chimpanzees understand the specific medicinal properties of certain plants and will go out of their way to treat the maladies of their peers.