The giant clam yielded its 14-pound pearl only after slaying a native diver trapped when its great jaws snapped shut.
Even at an early evolutionary stage, bird-like dinosaurs occupied different niches in the same ecosystem,
Dung beetles use light from the MIlky Way to find their way
Recently identified subspecies ranges farther than first imagined: across Africa.
An archaeologist ponders the fate of Hoover Dam