Cast Recap 
Joseph LeDoux is a neuroscientist whose research is primarily focused on survival circuits, including their impacts on emotions such as fear and anxiety. His latest book “The Deep History of Ourselves: The Four-Billion-Year Story of How We Got Conscious Brains” is now available. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Steve Aoki is a musician, author, DJ, record producer and music executive. His new book called “Blue: The Color of Noise” is available now. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Zuby is an independent rapper, creative entrepreneur, speaker and podcast host. Check out his podcast called “Real Talk with Zuby” available on Spotify. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Neil deGrasse Tyson is an astrophysicist, cosmologist, author, and science communicator. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Joe is joined by Eddie Bravo, Bryan Callen & Brendan Schaub to watch the fights on September 7, 2019. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Bill Burr is a standup comedian and also hosts his own podcast called “Monday Morning Podcast” available on Spotify. His new special “Paper Tiger” is now streaming on Netflix. Learn more about your ad choices. Visit podcastchoices.com/adchoices
David Sinclair, Ph.D., A.O. is a Professor in the Department of Genetics and co-Director of the Paul F. Glenn Center for the Biology of Aging at Harvard Medical School. His new book “Lifespan: Why We Age And Why We Don’t Have To” is now available. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Nick Bostrom is a Swedish philosopher at the University of Oxford known for his work on existential risk, the anthropic principle, human enhancement ethics, superintelligence risks, and the reversal test. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Dan Aykroyd, CM OOnt is a Canadian-American actor, producer, comedian, musician and filmmaker who was an original member of the “Not Ready for Prime Time Players” on Saturday Night Live. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Sean Carroll is a cosmologist and physics professor specializing in dark energy and general relativity. He is a research professor in the Department of Physics at the California Institute of Technology. His new book “Something Deeply Hidden” is now available and also look for “Sean Carroll’s Mindscape” podcast available on Spotify. Learn more about your ad choices. Visit podcastchoices.com/adchoices