This is the mystery of risk: What makes some humans ... as part of an assignment for National Geographic when he was kidnapped by militiamen, who beat and threatened to kill him.

This remarkably well-preserved cub could help scientists answer questions about sabertooth anatomy, hunting, and even coat ...

Foot, boot and sock believed to belong to Sandy Irvine, who disappeared in a 1924 expedition, according to National Geographic.

Moreover, the magnetic field's intensity in the southern hemisphere was ten times weaker than in the north. This kind of ...