#4: Cannabis

Honest answers about marijuana and its active ingredients. Marijuana doesn't actually contain any chemicals that get us high. But with a bit of chemistry--like lighting it on fire--we can produce psychoactive ingredients that many of us enjoy regularly. Join me to discuss how weed works in the body, and how to use it without wasting your buzz. Plus the history of marijuana, from homeopathic healers to racist politicians, the drug has taken an interesting route through US history. ...