Nerd Alert

Archaeology is the topic of today's Nerd Alert. How long have the Americas been settled by humans?

We just don't know. In recent years, discoveries have cast doubt on the long-held assumption that the so-called Clovis people were the first settlers south of the ice sheets in the Western Hemisphere. Discoveries in Chile and South Carolina seem to suggest that humans were here before the earliest date ascribed to the Clovis hunters.

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