CANNABIS CULTURE - As a founding member of the Grateful Dead, ethnomusicologist, sound archivist and preservationist, and seeker after billions of years old vibrations from the deep recesses of space, Mickey Hart has done more during his years on earth than many of us could imagine undertaking over several lifetimes. At 69 years of age, the California native has energy to burn. He credits his good health and curiosity to an ability to distinguish between the good and bad rhythms the world offers and to play through them.