If a pig embryo infused with human cells truly became something close enough to count as a member of the human species, then ...

What muscles feet have, how your brain controls them, and how humans evolved all play a part in why people can’t easily move ...

A new pterosaur species was recently discovered in the vomit of a dino. But that's just the start of revelations from ...

A spherical sea sponge discovered in Antarctica, Carnivorous cladorhizid, is a carnivore, trapping and devouring live animals ...

From queen-slaying ants to brawling kangaroos, these species reveal just how savage survival can be in the natural world ...

Silent wings, razor-sharp talons, and killer precision—these apex aerial predators rule the skies. Here are the world’s ...