Around 50,000 years ago, North America was teeming with megafauna. Mammoths roamed the tundra, while towering mastodons, ...
During the Ice ... in North America roughly 13,000 years ago may have planted spears in the ground—with their sharp tips ...
They keep discovering ancient bones and mummified animals, from a perfectly ... well-preserved snapshots of the Ice Age, when glaciers covered northern North America. Because most of Earth's ...