In its 4.5 billion year history, Earth has undergone five mass extinctions and we are potentially in a sixth era of mass death. Today’s crocodylians are the surviving members of a lineage called ...

Some species seem to live fast and die young. Others, though, “appear not to age,” says João Pedro de Magalhães, a molecular ...

A look into our evolutionary past, when early humans were prey to deadly creatures across the world—before we ruled the animal kingdom.