(CNN) Cannabis' earliest roots may have stemmed from northwestern China -- not South Asia as commonly believed, according to a study published on Friday. Cannabis was one of the first plants domesticated by humans, and has a long history of being used in textiles, food, and oilseed as hemp, the study said. But this history has been difficult to research, due to modern legal restrictions around the plant's use and accessibility. A feral cannabis plant in the middle of a grassland in Qinghai province, central China. Their genomic analysis separated the samples into four major groups, including basal cannabis, which is found in China and the United States.

Source: CNN July 17, 2021 00:00 UTC