#1543. Attorney and scholar Brian C. Muraresku is the author of The Immortality Key: The Secret History of the Religion with No Name. Featuring an introduction by Graham Hancock, The Immortality Key is a look into the psychedelic origens of the world's great spiritual practices and what those might mean for how we view ourselves and the world around us. Hancock's most recent book is America Before: The Key to Earth's Lost Civilization, now available in Paperback.

#1541. Writer, stand-up comedian, and cultural commentator Bridget Phetasy’s writings can be found in The Spectator, Quillette, and The New York Times. In addition, she’s the host of the YouTube program Dumpster Fire, and the podcast Walk-Ins Welcome.

#1539. Award-winning documentarian and journalist Jenny Kleeman has reported for HBO’s Vice News Tonight, and BBC’s Unreported World. She is the author of Sex Robots & Vegan Meat: Adventures at the Frontier of Birth, Food, Sex & Death, available now from Pan MacMillan.

#1537. Scientist Lex Fridman researches human-centered artificial intelligence and autonomous vehicles at MIT, and studies Brazilian Jiu-Jitsu in his spare time. Check out his podcast “Lex Fridman Podcast”, available now on Apple Podcast and YouTube.

#1535. Special Forces operator and retired UFC fighter Tim Kennedy is the founder of Sheepdog Response, a training program aimed at giving law enforcement, military, and others the tools they need to quickly and effectively respond to violent threats.