There's a reason enemies struggle to take out U.S. tanks. Their armor systems blend science fiction with battlefield realism, ...

Ancient human figurines have been found. Some of the oldest known paintings in the world are in the Cave of the Castle, in Cantabria in the north of Spain. Thought to be more than 40,000 years old ...

New research shows 8,000-pound sloths once dug caves, adapted to oceans, and roamed widely—until climate and humans brought their downfall.

A striking discovery in northern Argentina has reignited curiosity about the origins and cultural practices of ancient ...