Ancient Humans in America May be Older than First Thought
Researchers in Texas have suggested that ancient people arrived in America between 15,000 and 20,000 years ago, which is much earlier than originally believed.
Evidence comes from more than 2.6 million artifacts, including engraved stones, tools and remnants of dwellings that have been discovered at the Gault Site in Central Texas.
Until recently it was believe that the Clovis Culture, dating back 13,000 years ago was the first culture in America, but many of the artifacts have been dated as much older than that.
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