5,700 years ago, woolly mammoths crossed a remote tundra island off Alaska.
Why did vertebrates conquer both the land and the air before the depths of the sea?
A feud between the revolutionary group MOVE and Philadelphia officials reached a bloody culmination.
Inspired by dinosaurs, Alex goes on a journey to stabilize collagen and create leather...with eggs.
Long-extinct dinosaurs may still haunt us—possibly driving us to age faster than any vertebrate.
Only twice in Earth's history have supermountains risen, and both times reshaped life forever.