Matter: Humans Lived in North America 130,000 Years Ago, Study Claims If early humans smashed mastodon bones found in California in 1992, scientists will have to rethink how humans came to the Americas. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Trilobites: Coyotes Conquered North America. Now They’re Heading South.Scientists successfully transplant memory in freak experiment - are humans next?M.L.B. Hired Scientists to Explain Why Home Runs Have Surged. They Couldn’t.Trilobites: Only Two of These Rhinos Survive. Scientists See Promise in Resurrecting Them.Climate SHOCK: Global warming could produce MORE farming land, scientists admitHurricane Season’s Around the Corner. Here’s What to Expect.