Archaeologists date their finds in Mexico to as early as about 33,000 years ago Humans may have arrived in North America way earlier than archaeologists thought. Stone tools unearthed in a cave in Mexico indicate that humans could have lived in the area as early as about 33,000 years ago, researchers report online July 22 in Nature. That’s more than 10,000 years before humans are generally thought to have settled North America. This controversial discovery enters a new piece of evidence into the fierce debate about when and how the Americas were first populated. https://www.sciencenews.org/article/cave-mexico-stone-artifacts-humans-americas-early