New Research Says People Arrived In Americas Much Earlier And Co-Existed With Giant Sloths And Mastodons

SAO PAULO (AP) — Sloths weren’t always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense claws. For a long time, scientists believed the first humans ...Read more