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+--- Thread: [Science Daily] Origins of cannabis smoking (/Thread-Science-Daily-Origins-of-cannabis-smoking)
[Science Daily] Origins of cannabis smoking - Science Daily - 2019-07-03
Origins of cannabis smoking
A chemical residue study of incense burners from ancient burials at high elevations in western China has revealed psychoactive cannabinoids. The finding provides some of the earliest evidence for the use of cannabis for its psychoactive compounds.
https://www.sciencedaily.com/releases/2019/06/190612165603.htm