Early Civilization Uncovered in Southeast

摘要

The discovery of stone tools alongside mastodon bones in Florida's Aucilla River shows that humans settled the southeastern U.S. as much as 1,500 years earlier than scientists previously believed. The site dates back 14,550 years, according to radiocarbon testing. There is a cluster of sites all over North America that date to around 13,200 years old, but there are only about five in all of North and South America that are older.