Michael Pollan, Author of "This Is Your Mind on Plants"

Even with the boom in legal cannabis, there were still more than one million marijuana arrests across the U.S. in 2019. In his new book, "This Is Your Mind on Plants," author Michael Pollan challenges the way we think about all drugs, from psychedelics and opioids to the caffeine in tea and coffee. Pollan speaks with Walter Isaacson about the effects of plant-based drugs on our behavior.