Gut Churn The host and creator of the Radiolab podcast, Jad Abumrad, is in Australia for the Sydney Opera House’s BingeFest — a 24-hour celebration of pop culture. Abumrad will talk about a concept he calls “gut churn”; the anxiety and doubt artists and creators often feel during the creative process. Sydney Opera House, Bennelong Point, Sydney. Tomorrow, 3.15pm. Tickets: $40. Bookings: (02) 9250 7777 or online.