May 30, 2007 — A large extraterrestrial object exploded over the heads of the first Americans about 13,000 years ago, wiping them out and making big mammals and other prehistoric creatures disappear, according to a new U.S. study.
Presented last week at the American Geophysical Union meeting in Acapulco, Mexico, the controversial research proposes that the extraterrestrial blast triggered a catastrophic millennium-long cold spell.
The dramatic climate change would have been the major cause for the sudden disappearance of mammoths throughout much of Europe and America and the demise of the Clovis people, the New World's most sophisticated hunters.
"The impact occurred precisely when the megafauna suddenly disappeared from North America. The Earth, which was warming from the last ice age, was plunged suddenly into a 1,000-year period of cooling known as the Younger Dryas," nuclear scientist Richard Firestone of Lawrence Berkeley Laboratory in California, told Discovery News.
The History Channel has a program, Journey to 10,000 BC, which presents all this material along with the view that the Americas were populated from both Europe and Asia. The program shows the relationship of Clovis points to those done in Spain. It also speaks about the meeting of humans from Europe and Asia and of the possible results. These groups merged and became the Folsom People.