At first glance, this mammal looks like a horse gone terribly wrong. But, in reality, Chalicotherium is far from a botched ...

Bats have been found to evolve into bigger sizes in exactly the same way in separate locations, in a very rare example of parallel evolution. The findings come from a study of several bats—some very ...

Evolution is a complicated thing. Much of modern evolutionary biology seeks to reconcile the seeming randomness of the forces behind the process — how mutations occur, for example — with the ...

Introduction to the show's theme: the "arms race" between predator and prey as a driving force in evolution. Example where a microbe is predator, humans are prey Russian prisons have spawned a deadly ...