A federal judge has ordered the Trump administration to immediately stop construction of a border wall at Big Bend National Park. The project through the national park in southern Texas faced fierce b...

"It’s possible that the pilot flying your plane could have a deranged fetish of dressing up like an animal," Tuberville said.

A type of tiger cat, the animal is slender, spotted and smaller than a house cat. It lives in the Bolivian cloud forest.

A species on the brink of extinction needed two desperate interventions—removing an apex predator and breeding foxes in captivity—to climb back from the edge of oblivion.

It's one of the first successful legal challenges to the administration’s “energy emergency” agenda.

ALT: Bugs Bunny: 'What a Maroon!'

Interior department given three months to decide whether wolves can be removed from endangered species list

Recent discoveries have revealed that breast cancer cells are more flexible than previously thought. Some can change from a differentiated state, when a mature cell has taken on a specific function, b...

Scientists painted one turbine blade black in Norway and found a striking drop in bird collisions, including white-tailed eagles.

The Interior Department says the tree work is "routine maintenance." But park advocates are on high alert.