‘Stoned-age?’ People smoked weed 2,500 years ago, earliest use yet discovered

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As Thailand became the first in Southeast Asia to legalise marijuana for medical use last year, many Thais are drawn to a northeastern town for its debut weed festival.
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Some 2,500 years ago, in present-day China, people were using cannabis to get high during rituals, scientists announced in a new study published Wednesday.

This is the first known use of weed by humans anywhere in the world, the study suggests.

“Modern perspectives on cannabis vary tremendously cross-culturally, but it is clear that the plant has a long history of human use, medicinally, ritually, and recreationally, over countless millennia,” said study author Robert Spengler, an archaeobotanist at the Max Planck Institute for the Science of Human History in Jena, Germany.