4,000-year-old teeth reveal the earliest use of this psychoactive substance

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4,000-Year-Old Teeth Reveal The Earliest Use Of This Psychoactive Substance

By CNN

History uncovered Asia See all topics Follow For the first time, archaeologists have used advanced scientific techniques on 4,000-year-old dental plaque to confirm traces of betel nut chewing in ancient Thai communities. Betel nuts are usually chewed ...Read more