Question Everything debuts. Or does it? It does. We're talking climate change, mice on the move, and how patient zeroes might be heroes. Wil and Jan are joined by Luke Heggie, Alexis Toliopoulos and Concetta Caristo.

Questioning vaccine questioners. How horse sense can dismiss horse medicine. And we're all going to die. But how? We tell you what not to worry about. Wil and Jan are joined by Dane Simpson, Susie Youssef and Tom Cashman.