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He places the cigarette between his lips, but before he lights it, the camera pans to a mirror hanging in front of him

This is the earliest direct biomolecular evidence of betel nut use in south-east Asia. We demonstrate that dental calculus can preserve chemical signatures of psychoactive plant use for millennia, even when conventional archaeological evidence is completely absent, added Dr Shannon Tushingham, the senior author, who is the associate curator of anthropology at the California Academy of Sciences

Scholar argues that recent FDA regulations may keep smokers in the dark about e-cigarettes

Archived from the original on December 6, 2006

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