Michael Pollan

Michael Pollan. His new book, titled "A World Appears: A Journey Into Consciousness," is about different ways neurobiologists and engineers are trying to figure out the source of consciousness and whether AI can ever achieve it. Pollan also writes about how Zen Buddhists, writers and philosophers approach the idea of self and consciousness.

We listen to a 1983 interview with psychologist Timothy Leary, a 1990 interview with spiritual leader Ram Dass and a 2018 interview with How to Change Your Mind author Michael Pollan.

After wrapping up his book about the potential therapeutic benefits of psychedelic drugs, author Michael Pollan turned his attention to a drug that's hidden "in plain sight" in many people's lives: caffeine.