Humans may have lived in the Americas 130,000 years ago, far earlier than thought

Ancient remains found in California suggest that humans were present in North America some 130,000 years ago — substantially earlier than scientists previously thought. A site in San Diego contains evidence that early human ancestors smashed mastodon bones and teeth to make rudimentary tools. The smattering of bone fragments, hammer-stones, and anvils now represents the oldest archeological site in the Americas, according to a study published in the journalNature on Wednesday. The oldest w