Designers of feline-focused tablet apps are learning a lot about how pets play.

And they ask for help when they don’t.

A U.S. district court in Montana ordered the agency to reconsider its bid for wolverines as a threatened species.

Some right whales disappear for years, only to reemerge in strange places with a baby.

Immunity to a last-resort antibiotic can develop in bacteria that haven’t been exposed to that antibiotic.

The insects have a kind of stereovision that works in a completely different way than ours.

It’s often said that the ocean releases them from the constraints of life on land. It’s actually the opposite.