The No.1 New York Times Bestseller'Reminds us that the mind is the greatest mystery in the universe' Yuval Noah Harari, Guardian, Books of the YearCould psychedelic drugs change our worldview? One of America's most admired writers takes us on a mind-altering journey to the frontiers of human consciousnessWhen LSD was first discovered in the 1940s, it seemed to researchers, scientists and doctors as if the world might be on the cusp of psychological revolution. It promised to shed light on the d ...