Before the Spanish introduced modern horses to the New World, horses roamed wild in North America, then they disappeared, but ...

Humans and wolves co-evolved, influencing each other’s development, a relationship that led to the domesticated dog. But what ...

The extinct mammals were about five times larger than a grizzly bear–and filled caves with their poop.

Given their abundance in American backyards, gardens and highway corridors these days, it may be surprising to learn that ...

Molecular clues from collagen in old bones are teaching us about the lives, movements, and demise of Ice Age megafauna like ...

Scientists have gained some guarded optimism in efforts to protect and save bats from white-nose disease. Now there's a whole ...