Learn more about ancient giant kangaroos and the previous research claiming they were too heavy to hop. A new study finds ...

Scientists previously thought hopping was impossible for Protemnodon goliah.

Turtles today are often slow-moving, modestly sized creatures, but their ancient relatives were quite different. Long before ...

Add Yahoo as a preferred source to see more of our stories on Google. Before the famously huge megalodon, another fearsome ocean predator roamed the seas. According to a paper published earlier this ...