A new analysis of enigmatic skulls from the Republic of Georgia suggest that Homo erectus wasn't the only human species to ...

THIS ARTICLE IS republished from The Conversation under a Creative Commons license. In pursuit of knowledge, the evolution of humanity ranks with the origins of life and the universe. And yet, except ...

SAO PAULO — Sloths weren’t always slow-moving, furry tree dwellers. Their prehistoric ancestors were huge — up to 4 tons — and when startled, they brandished immense claws. For a long time, scientists ...

All vertebrate species have a pelvis, but only humans use it for upright, two-legged walking. The evolution of the human pelvis, and our two-legged gait, dates back five million years, but the precise ...

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 ...