It was just seven years ago that Washington and Colorado became the first states to legalize the recreational use of marijuana. Today the drug is legal in eleven states and counting, with polls showing that sixty per cent of Americans support its legalization. How did that happen so fast? This episode of The New Yorker Radio Hour looks at the end of reefer madness—and the early days of corporate cannabis. Bruce Barcott talks about the politics and the public-health aspects of legalization; Jelani Cobb looks at how legalization tries to undo the decades of harm that marijuana prohibition has done to communities of color; Sue Halpern drives around Vermont, where weed is the new zucchini; and Jia Tolentino shares the joy of watching David Attenborough under the influence.