Neil Shubin hunts for fossils in the Arctic and experiments with D.N.A. in the lab, hoping to find out how fish evolved to walk on land. He explains why unlocking these answers could help humans today. This episode was originally published February 3, 2023. For a full transcript, resources, and more, visit: https://freak.ws/3X6qwIr Photo credit: Whitney Curtis ABOUT PEOPLE I (MOSTLY) ADMIRE: People I (Mostly) Admire is hosted by Steven Levitt, the unorthodox University of Chicago economist and co-author of the Freakonomics book series, who tracks down other high achievers and asks questions that only he would think to ask. Guests include all-time Jeopardy! champion (and now host) Ken Jennings, YouTube C.E.O. Susan Wojcicki, W.N.B.A. champion Sue Bird, Operation Warp Speed chief Moncef Slaoui, and neuroscientist/actress (also now Jeopardy! host) Mayim Bialik. Winner of Adweek‘s 2021 Best Interview Podcast of the Year. SUBSCRIBE TO PEOPLE I (MOSTLY) ADMIRE: YouTube: https://freak.ws/3yIl6dl Stitcher: https://freak.ws/3ENOP8v Apple Podcasts: https://freak.ws/3ELfGST Spotify: https://freak.ws/3D6uqKV ABOUT FREAKONOMICS RADIO NETWORK: Freakonomics began as a book, which led to a blog, a documentary film, more books, a pair of pants, and in 2010, a podcast called Freakonomics Radio. Hosted by Stephen J. Dubner, it’s one of the most popular podcasts in the world, with a reputation for storytelling that is both rigorous and entertaining. Its archive of more than 500 episodes is available, for free, on any podcast app, and the show airs weekly on NPR stations. Freakonomics Radio is now the flagship show of the Freakonomics Radio Network, which includes the podcasts No Stupid Questions (est. 2020), People I (Mostly) Admire (2020), and Freakonomics, M.D. (2021). FREAKONOMICS RADIO NETWORK PODCASTS: Freakonomics Radio: https://freakonomics.com/series/freakonomics-radio No Stupid Questions: https://freakonomics.com/series/nsq/ People I (Mostly) Admire: https://freakonomics.com/series/people-i-mostly-admire/ Freakonomics, M.D.: https://freakonomics.com/series/bapu/ Special series: https://freakonomics.com/topics/ CONNECT WITH US: https://twitter.com/freakonomics https://www.facebook.com/freakonomics/ https://freakonomics.com/podcasts/ Subscribe to our newsletter: https://freak.ws/3CzOVhw Email us: radio@freakonomics.com