We're going deep into the Earth with the latest earthquake science in this episode. Geologist Dr. Wendy Bohon and Seismologist Robert Geller join us. We talk the latest California quakes, danger zones and predicting the next "Big One" Then, John Shull talks about going to prison. And we discuss our most controversial Top 5 yet.Dr. Wendy Bohon and Robert Geller: Learn more about your ad choices. Visit megaphone.fm/adchoices