We’re talking to journalist Tom Philpott of Mother Jones about the dark side of everyone’s favorite nut, the almond. Sarah Copeland, author of Feast, explains what it means to eat 90 percent vegetarian. The Sioux Chef's Sean Sherman specializes in Native American food with indigenous ingredients. Jane and Michael Stern share a regional treasure from Pennsylvania, the zep.

Broadcast dates for this episode:

• March 27, 2015 (originally aired)
• March 25, 2016 (rebroadcast)