drugs New documentary looks at wooks and their drug-fueled world Rusty Blazenhoff

counterculture Watch the Druids descend on Stonehenge as the hippies look on (1969) David Pescovitz

hippies Learn about the dangers of the hippies in this 50 minute film, "The Hippie Temptation" Popkin

hippies Attempting to clean up hippie camp, county encounters hippies Jason Weisberger

puppets A look back at the revolutionary history of Vermont's Bread & Puppet Theatre Thom Dunn

photography Instagram archive of San Francisco pop culture photographer Alvan Meyerowitz Gareth Branwyn

1960s Leigh French aka "Goldie Keif" on The Smothers Brothers Gareth Branwyn

murder There are a surprising number of unsolved murders involving Grateful Dead fans Thom Dunn

music Watch Walter Cronkite and CBS News report from Woodstock (1969) David Pescovitz

pop culture National Lampoon co-founder Doug Kenney speaking at UCLA (1972) Rusty Blazenhoff

music "Riki Tiki Tavi" by Donovan (1970) Jason Weisberger

film Dirty Kids: movie on "street" youth who find unlikely home at hippie Rainbow Gatherings Andrea James

Science Bearded scientists: Will they kill us all? Maggie Koerth

British occultism reportedly making a comeback Thom Dunn

artificial intelligence Keep A.I. weird! Allan Rose Hill