These sorts of interactions very likely occurred between disparate human groups in our distant past. There’s strong evidence that separated groups of people, and even distinct species of humans, ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The living mammal family tree is full of diverse species–big blue ...

Every mammal that is found on our planet is descended from one common ancestor, thought to have lived around 180 million years ago. Although there is a lot we do not yet know about this animal, ...