The Origins Of Cannabis Finally Revealed

The origin of marijuana has finally been discovered and it dates back 28 million years to the Tibetan plateau, 10,700ft (3km) above sea level. Researchers analysed pollen fossils of the plant and found it slowly dispersed over millennia to Europe, China and India. It has long been known cannabis originated in Central Asia but its exact location had remained a mystery until now. Archaeological evidence of its use as a drug dates back to to 2,700 BC in the nearby Xinjiang region north west of China.