Humans visited Arctic earlier than thought

Weapon marks found on mammoth bones dating to 45,000 years ago

mammoth bones

EARLY ARCTIC HUNTERS  Mammoth remains (left) dating to 45,000 years ago and found in Arctic Siberia show signs of hunting injuries (right) perimortem (red arrows) and postmortem (blue arrows). The discovery puts humans in the Arctic earlier than previously thought.

V. Pitulko et al/Science 2016 

A frozen mammoth carcass in Siberia hints that humans roamed the Arctic earlier than researchers had thought.