Archaeologists working in Alaska’s middle Tanana Valley have recovered stone and ivory tools from a sealed stratigraphic layer dating to roughly 14,000 years ago, making them among the oldest worked ...

NEW YORK — Stone tools found in a Mexican cave suggest that people were living in North America as early as about 26,500 years ago, much earlier than most scientists accept, a new study says. It’s a ...

Here’s what you’ll learn when you read this story: New research on a 14,000-year-old soil layer in Alaska uncovered stone and mammoth ivory tools. The find offers the oldest examples of human-made ...