Most major blood groups were identified early in the 20th century. Many discovered since, like the Er system first described ...

Antarctic icefish have clear blood, no hemoglobin, and antifreeze proteins that let them survive freezing seas.

The largest animal that has ever lived is not a dinosaur from Yore but a living mammal that still crosses our oceans. The ...

A new way of analysing fossils has revealed more about animals and environments of ancient times, when humans were evolving.

Now, if you're not familiar with the dogs of Chernobyl, they're comprised of a collection of one-time family pets that had to ...