A controversial find could rewrite the history of humans in North America.
Archaeologists claim to have found evidence an unknown species of human was living on the continent as early as 130,000 years ago - 1115,000 years earlier than previously thought.
Researchers discovered the butchered remains of an enormous mastodon in San Diego, with evidence of chips and fractures made by early humans - but they admit they don't know if they were Homo sapiens, Homo erectus, Neanderthals, or something else. -- More...
