New research suggests that a species of unicorn-like horned rhinos went extinct much later than previously thought.
The discovery actually says something important about modern humans' migration out of Africa.
Scientists say it could have been a matter of culture.
The newly discovered species may be an ancient relative of giraffes.
Apparently, chewing is just slowing us all down.
Scientists say this prehistoric reptile was unlike any other on the supercontinent Pangea.
The prehistoric carnivore may have had venom-delivering chompers.
"It may slightly increase the odds of finding a royal tomb, but the uncertainty is what is exciting," Cowgill said in the