Annalee Newitz returns to the show to discuss the cutest little food delivery robots you've ever seen. Plus, Rachel talks self-medicating apes, and Amanda explains why we love our pets' stink and our lovers' smelly armpits.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=5VF2r2XiQoGepRsMTBsDAQThanks to our Sponsors!

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