Today we learn the history of BBQ, and why it is steeped in racism. We talk about the creepy way Amazon’s Alexa keeps laughing at people. We discuss the self-driving car who killed a pedestrian, and why we’re freaked out by it. We also talk about the recent Nat Geo cover that showed twins who have different skin color. Plus, we interview Elizabeth Catte about her book What You’re Getting Wrong About Appalachia.