Third Thumb, Nostalgia, Orcas. Aug 20, 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 Designer Dani Clode with her "Third Thumb" device. ( Dani Clode ) Hosted by Ira Flatow and John Dankosky Produced by Science Friday and WNYC Studios