Beef Genetic Testing, Chasing Whales, Radiolab Gonads. June 29, 2018, Part 1 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 Remington Kellogg, former director of the United States National Museum, observes a full-size, 78-foot-long model of a blue whale at the Smithsonian National Museum, in 1933. ( Smithsonian Institution Archives/Public Domain ) Hosted by Ira Flatow Produced by Science Friday and WNYC Studios