The Oldest Human Footprints in North America
The Ancients
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What Is Radio Carbon Dating?
Radio carbon dating is a technique that works by the decay of a particular isotope in the carbon. It only works until oll of carbon isotope has been decayed, which is normally about 50 thousand years. For anything older than that, we have to use slightly different elements, which have longer half lives like uraniums. This clearly shows that humans were in north america long before that and means we could have older sights going back as old as 28, 29, 30 and years.
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