Gut Fungi, Olympic Challenges, Planetary Seismology. July 30, 2021, Part 2 Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Brazil's Rayssa Leal competing in the skateboarding events at the Tokyo 2020 Olympic Games. ( Shutterstock ) Hosted by Roxanne Khamsi Produced by Science Friday and WNYC Studios