Parts of the Arctic tundra are now releasing more planet-warming gases than they absorb, an international study published ...

A brutal polar vortex is set to bury the Big Apple in snow Sunday and then deliver deadly single-digit temperatures that will ...

A photographer went to South Georgia hoping to find a yellow penguin he saw three years ago. Instead, he found an even rarer ...

An ancient fossilized forest in Montana is reemerging 600 feet higher than the present-day tree line after spending the last ...