Scientists and historians have long debated what makes us human. Why is our species, Homo sapiens, so different compared to our extinct cousins? Anthropologists point to our physiological adaptations ...

Footprints made by Paranthropus boisei and Homo erectus Discovery raises questions about interspecies competition Tracks reveal differing foot anatomy and locomotion Nov 28 (Reuters) - About 1.5 ...

Imagine a world where colossal creatures roamed the land, coexisting with early humans. This was the reality in the Americas, where giant sloths and mastodons thrived alongside our ancestors for ...

Researchers say recently discovered teeth come from a previously undiscovered species of Australopithecus, adding to our understanding of human evolution. Maybe you've seen the T-shirts or the mugs, ...

SAO PAULO, Brazil (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 ...

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 ...