Nature World: Patagonia in South America was once the home of Ice Age giants, like huge sloths, bears and saber-toothed cats. Suddenly, they all died at exactly the same time--around 12,300 years ago.
A new study published in the journal Science Advances revealed that the species were killed off as a result of human activities and rapid climate change.
Molecular biologist Alan Cooper of the University of Adelaide said his team discovered that human hunting drove a swift blow to the populations of these Ice...