Stone tools found in some of the earliest settlements in the Americas are challenging the prevailing theory of when the first migrations to the region happened. These tools, probably used as spear ...

Long before there were maps or names for continents, a handful of people stood at the edge of the world. Picture them on a frozen shoreline in what’s now Japan or Russia, staring east across the gray ...

Here’s what you’ll learn when you read this story: Sometime around 13,000 years ago, during Late Upper Paleolithic period of the Late Pleistocene, nomads from the steppes of northeast Asia crossed the ...