Pioneering cannabis chemist Dr. Raphael Mechoulam passes away at 92 By JasonMarch 11, 2023aggregated, cannabis news, cannabis research, Science & tech Dr. Mechoulam was the first to isolate THC in the 1960s and his research laid the foundation for medical and adult-use weed legalization. The post Pioneering cannabis chemist Dr. Raphael Mechoulam passes away at 92 appeared first on Leafly.