A little related information...
Archeologists have long insisted that people first came to the Americas by crossing the Bering land bridge from Siberia between 10,000 and 18,000
years ago. However, most indigenous people in both North and South America deny this. South Americans say they came from the sea and many Native
Americans say they came from the South. Now it's been discovered that they couldn't have crossed the Bering Bridge, since it didn't exist then.
Allison M. Heinrichs writes in the Los Angeles Times that archeologists carbon dated materials found at the Ushki site in Siberia, which is thought to
be the original starting point for crossing the Bering land bridge into North America, and found it's much younger than they previously believed.
This means the first Americans couldn't have used it to migrate overland during the last great ice age. The Ushki site is the remains of a community
of hunters who lived around Ushki Lake in northeastern Russia that is now known to be only about 13,000 years old.
The new date means the Ushki settlement is the same age as the Clovis site, an ancient community found in New Mexico. It would have been impossible
for people to walk thousands of miles from Siberia and then on into what is now New Mexico in such a short period of time. "This was the last site
out there in Siberia that could have been an ancestor for the Clovis," says researcher Michael Waters. "We have to think bigger now and start
thinking outside the box."