Dr Mark Porter looks at what we do and don't know about the dangers of recreational drugs.
The enduring appeal of Dorothy in the Wizard of Oz. Plus, should mephedrone be banned?
An ex-heroin dealer returns to the mountain hideout where he received drugs rehabilitation
James Silver investigates the sacking of the government's chief drugs adviser.
The young gangsters in Vancouver who are building a multi-billion dollar drugs industry.
Claudia Hammond travels to Lisbon to find out how decrimalising drugs could help addicts.
Andrew Marr talks to Phillip Blond, Adam Wishart, Elaine Showalter and AC Grayling.
Peter White visits a men's mental health support group and speaks to Alistair Campbell.
Matthew Hill investigates the drug Champix and its possible links to psychiatric illness.
Sue MacGregor brings together a group of people to tell the story of Thalidomide.