Sloths weren’t always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons ...

New research from several sites is starting to suggest that people came to the Americas earlier — perhaps far earlier — than ...

Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense ...

Controversy over whether it was disrupted by an Aryan invasion may now be discredited, but the debate over Indus ancestry and ...