Oldest evidence of cannabis smoking found in ancient Chinese cemetery

Oldest evidence of cannabis smoking found in ancient Chinese cemetery

Enlarge / This is how the braziers were placed in the tomb alongside the deceased. The broken wooden braziers, unearthed from 2,500-year-old tombs in western China, contained burned, blackened stones, and the interior of the wooden vessels also looked charred. To find out what had been burned in them, University of Chinese Academy of Sciences archaeologist Yemin Yang and his colleagues used gas chromotography/mass spectrometry to analyze small samples of the charred wood and the residue from the stones.

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Ars Technica

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