The color change, driven by hormones, seems aimed at preventing males from accidentally mating with each other.

Tampa International Airport’s forgotten finds are now being featured in a National Geographic reality series. The production ...

Nile crocodiles are generally considered to be much more aggressive than American alligators or American crocodiles,” says Adam Rosenblatt, an expert on crocodilians and postdoctoral associate at the ...

In a monastery beside a 16th-century basilica in Pátzcuaro, Mexico, Dominican nuns move between rows of aquarium tanks, ...

An American skied down the world's highest peak. Adventurer Jim Morrison is the first person to ski down Everest's most challenging route, a narrow and steep gully on the infamous North Face.