It's 50 years since LSD was banned. Since then, self-styled 'psychonauts' have tried to get altered states of consciousness without drugs. Does it work? Jolyon Jenkins investigates. Show more
Discover 11,128,835 listings and 278,152 playable programmes from the BBC
It's 50 years since LSD was banned. Since then, self-styled 'psychonauts' have tried to get altered states of consciousness without drugs. Does it work? Jolyon Jenkins investigates. Show more