Cannabis may have originated high on the Tibetan Plateau, according to an analysis of fossil pollen.
While this medicinal and psychotropic plant was long thought to have first evolved in central Asia, scientists were hazy on the precise location.
That's because there isn't much evidence of ancient cannabis in fossil impressions — imprints that plants leave behind in rock.
But there was abundant fossil pollen representing the Cannabis genus, scientists recently reported.
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Mindy Weisberger ~ LiveScience.com ~
