Want to make some coin raising rabbits? Get yourself an island. Or not, if you want to protect the existing ecosystem.

And how it changed Park Service policy.

The 19th-century naturalist Alfred Russel Wallace created a visualization that tied different species to specific regions of the world.

A giant squid sighting has us wondering all over again: how on earth do deep-sea creatures get so large?

Biological research tracks predatory carnivores, who are increasingly veering into North American cities.