New study claims humans reached Americas 130,000 years ago

Ancient humans settled in North America around 130,000 years ago, suggests a controversial study — pushing the date back more than 100,000 years earlier than most scientists accept. The jaw-dropping claim, made in Nature1, is based on broken rocks and mastodon bones found in California that a team of researchers say point to human activity.Their contention, if correct, would force a dramatic rethink of when and how the Americas were first settled — and who by. Most scientists subscri