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4,000-year-old teeth reveal the earliest human high — Hidden in plaque

4,000-year-old teeth record the earliest traces of people chewing psychoactive betel nuts - EurekAlert!

Oldest proteins yet recovered from 18-million-year-old teeth

First Human Genome from Ancient Egypt Sequenced from 4,800-Year-Old Teeth

Scientists extract genetic secrets from 4,000-year-old teeth to illuminate the impact of changing human diets over the centuries