How long do whales live, and how do scientists figure out their age? What does it take to sustain a whale's enormous size? And why do whales have mustaches and belly buttons? Featuring Nick Pyenson, author of Spying on Whales and curator of marine mammal fossils for the Smithsonian. Buy Spying on Whales! This episode originally aired on September 12, 2018. Got a question or idea for the show? Call our hotline at (302) 405-5925 or email [email protected]. Follow us on Instagram @parttimegenius and Bluesky @parttimegenius.bsky.social! Photo by Chinh Le Duc via Unsplash. Thanks, Chinh! Learn more about your ad choices at https://www.iheartpodcastnetwork.com.See omnystudio.com/listener for privacy information.