Sarah Gailey hops on Weirdest Thing to talk about how hippos almost became extremely American. Plus, Sandra explains why Miami officials are going to perform vasectomies on peacocks, and Rachel gets into the ethics of saving Einstein's brain.The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our Facebook group or tweet at us!Click here to learn more about all of our stories! Links to Rachel's TikTok, Newsletter, Merch Store and More: https://linktr.ee/RachelFeltman Rachel now has a Patreon, too! Follow her for exclusive bonus content: https://www.patreon.com/RachelFeltmanLink to Jess' Twitch: https://www.twitch.tv/jesscapricorn--Follow our team on TwitterRachel Feltman: www.twitter.com/RachelFeltmanProduced by Jess Boddy: www.twitter.com/JessicaBoddyPopular Science: www.twitter.com/PopSciTheme music by Billy Cadden: https://open.spotify.com/artist/6LqT4DCuAXlBzX8XlNy4Wq?si=5VF2r2XiQoGepRsMTBsDAQ

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