A team led by two Texas A&M University anthropologists now believes the first Americans came to this country 1,000 to 2,000 years earlier than the 13,500 years ago previously thought, which could shift historic timelines.
The team's findings are outlined in a review article in the journal Science entitled "The Late Pleistocene Dispersal of Modern Humans in the Americas," which synthesizes new data suggesting the migration from Alaska started about 15,000 years ago.
Coulda sworn I blogged on this a while ago but I can't find anything on it. I have the issue of Science and will go through it soon.