The dinosaurs were not in decline before the asteroid hit, a new study finds. Instead, poor fossilization conditions and unexposed late Cretaceous rock layers mean they're either not preserved or…

There are more than 50 theories for the function of this 12-sided, pentagonal-faced bronze object — but archaeologists have never quite figured it out.

Researchers have found evidence of a titanic tussle between a terror bird and a large caiman in Colombia's ancient La Venta wetlands.