Join us for a live video interview with bestselling author Michael Pollan on Aug. 14 at 7 p.m. ET (4 p.m. PT). Grist’s Nathanael Johnson will moderate the event.

Have a question for the author of Cooked and Omnivore’s Dilemma? Sign up below to see the chat and submit a question. Donations support the Edible Schoolyards Project, a curriculum for grades preK-12 that uses food, from the garden to the kitchen, to teach youth about health, community, and the environment.