Vox's Sean Illing talks with author Michael Pollan about his new book This Is Your Mind on Plants, why some societies condemn drugs that other societies condone, what will happen as the war on drugs draws to a close, and whether or not taking psychedelic drugs can improve huamnkind.

"People have often reported on whistleblowing matter-of-factly as though we did it and moved on with our lives." But that couldn't be further from the truth.