But this new finding "definitively places humans in North America at time when the ice sheet-curtains were very firmly closed," Sally Reynolds, a paleoecologist at Bournemouth University in ...

North America was created by ice, and its legacy covers the landscape Ice created the landscape of North America that we’re all familiar with — even if we might not know much about how it happened. At ...

The work confirms a 2021 study’s findings ... they arrived from the north about 13,000 years ago, as the ice sheets across North America were retreating. (The Clovis are named after a town ...