Today we are delighted to share an episode from our colleagues on “The Ezra Klein Show,” originally published on March 31. Ezra interviewed author Michael Pollan, whose best-selling books include “The Omnivore’s Dilemma,” “In Defense of Food,” and “How to Change Your Mind.” Pollan’s latest book, “A World Appears: A Journey Into Consciousness,” came out earlier this year. It’s an exploration of what consciousness is, and the book is — as our review put it — “highly pleasurable to read.”