Daniel Pinchbeck may be the next Timothy Leary, the new guru of psychedelic drugs. Pinchbeck has spent time with the shamans in West Africa and the Amazon rain forest, experimenting with the world's most powerful hallucinogens. He says these psychedelic experiences launched him into new realms of consciousness. In this hour of To the Best of Our Knowledge we'll talk with Daniel Pinchbeck and hear the latest science on brain plasticity. Who says you can't teach an old brain new tricks?