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Every episode
The Weirdest Thing I Learned This Week
30 episodes
Literal Love Languages, Royal Dog of Madagascar, King Tut’s Undies
Aug 12, 2026 · 1 hr 9 min
Greg Jenner joins the show to unravel all of the secrets hidden in King Tut's undies. (Seriously. There are a lot.) Plus, Sara Kiley tells the story of the crusty white dog from Madagascar, and Rachel goes down a rabbit hole about only marrying someone who DOESN'T speak your language. Check out Greg's show! https://link.mgln.ai/YDTM-Weirdest-Thing The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our …
Boob Backwash, Nighttime Radio Secrets, 10 Toes Down on Tommy
Jul 29, 2026 · 55 min
Sarah Dern and Emma Gommetz join Rachel this week to talk a trio of extra weird things. We've got babies spitting backwash into the boob, radio's biggest op being literal "night", and a gender-bending squirrel beloved by military veterans named Tommy Tucker. 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…
The Greatest Con in Mushroom History, Secret Weapon: Normal Dogs, a Bee's Benis
Jul 15, 2026 · 1 hr 18 min
Bee scientist Kit Prendergast joins the show to talk about... well... the birds and the bees. Plus, Rachel explains how portobello (portabella?) mushrooms are not exactly real. And Sara Kiley tells us how a spotted lanternfly's worst enemy could be a normal dog. 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…
Fallout Shelter Fads, The Library of Cocaine, Mosquito Nepobaby
Jul 1, 2026 · 1 hr 6 min
Ben Bradford, host of the podcast Are We Doomed?, joins the show to talk about when buying fallout shelter goods was all the rage. Plus, Laura tells us how she's related to mosquito royalty, and Rachel explains why the Library of Congress is holding onto Freud's "friend's" cocaine. Check out Ben's show: https://podcasts.apple.com/us/podcast/are-we-doomed/id1893359212 The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our …
Creativity is Crumbling, Sarcophagus Juice Sourdough, Mycelium Mutual Aid
Jun 17, 2026 · 51 min
Pattie Gonia joins the show to talk about how secret networks of underground fungi are basically like nature's mutual aid. Plus, Moiya McTier returns to discuss creativity, why it might be crumbling, and how one measures it (spoiler: it is NOT easy). And Rachel explains how scientists used yeast from a melting mummy to bake a loaf of sourdough. The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our Fac…
Marie Antoinette Wearing Braces, Secret Immortal Cells, Chasing the Tooth Worm
Jun 3, 2026 · 53 min
Hari Kondabolu and Priyanka Wali join the show to talk about cells taken secretly and unethically... but ended up changing human health forever. Then, Rachel divulges a plethora of facts about dental care of yesteryear, from how Marie Antoinette wore braces (yes, seriously), to how Neanderthals drilled for cavities. 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…
We Did it Joe (Pilates), They Did Surgery on a Cocaine Hippo, Steinbeck Digs Deep (Literally)
May 20, 2026 · 1 hr 4 min
Ben Lillie joins the show to talk about John Steinbeck doing very in-character things on a scientific expedition out on the open ocean. Plus, Sara Kiley talks about Joseph Pilates (yes, that Pilates), and Rachel explains why people are doing surgery on those cocaine hippos. 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…
A Musical Secret Weapon, Low Cortisol Beakmaxxing, Roller Coaster Science
May 6, 2026 · 50 min
Dropout's Grant O'Brien joins the show to talk about all things weird roller coasters. Plus, Jess hops on to discuss how a Gregorian chant has infiltrated all of our favorite media, from Shrek to Elden Ring. And Rachel gets into how having less of a beak can actually make you more of a chad. 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 t…
Cannibal Caribou, Charming Worms, Strawberry-Flavored Neutrinos
Apr 22, 2026 · 55 min
Rachel's officially back! Chanda Prescod-Weinstein also joins as a guest host. This week, they talk about self-made caribou snacks, how to charm a worm, and why neutrinos can be classified as nontrinary. 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 ou…
REVISITING Naked Founding Fathers, Jalapeño Thumb, Counting Vampires
Apr 8, 2026 · 45 min
In our final rerun episode during Rachel's parental leave, we have the oldest episode yet. It features one of Jess' first appearances on the show in which she details strange vampire folklore (and why they love to count), Claire Maldarelli shares a weird pepper-related medical condition, and Rachel gets into why some founding fathers bathed outside, in the open air, naked. The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our…
Killer Demon Core, Victorian Theater-Kid Ghosts, Louis Pasteur's Secrets
Mar 25, 2026 · 1 hr 18 min
Jess brings adef and jacksonparodi on the show this week to discuss how one sphere killed two men in a matter of days, why folks in Victorian Australia used glowing paint to transform into ghosts, and how Louis Pasteur had more aura than ever imaginable. adef on Youtube: https://www.youtube.com/@adef adef on Twitch: https://www.twitch.tv/adef Jackson on Youtube: https://www.youtube.com/@JacksonParodi Jess on Youtube: https://www.youtube.com/@JessCapricorn Jess on Twitch: https://www.twitch.tv/je…
REVISITING Art Crime Doesn't Pay, Canines Cooking Meat, Eggs Gone Wrong
Mar 11, 2026 · 1 hr 1 min
While Rachel is on parental leave, here's a vintage episode from our vault! Rachel, Sara, and comedian Josh Gondelman discuss dogs cooking in kitchens, chickens laying eggs inside themselves, and one of the most peculiar art heists in history. 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! Cli…
Atomic Priesthood, Space Smells Like Beef, the Power of Pee Fuel
Feb 25, 2026 · 1 hr 7 min
Jess brings on science-minded friends Lindsey and Misti to discuss why space smells like a freshly opened beef stew packet, how having to pee makes you better at video games like Elden Ring, and how rituals and priests might be the solution to long-term nuclear waste warning. Follow Lindsey: https://www.twitch.tv/ohlindsey Follow Jess: https://www.twitch.tv/jesscapricorn The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stori…
REVISITING Olympic Weirdness: Barefoot Marathons, Medals for Artwork, Pistol Dueling
Feb 11, 2026 · 1 hr 3 min
While Rachel is on parental leave, here's a vintage episode from our vault! Rachel, Claire, and Sara discuss all things weird related to the Olympics way back in 2021 (when the games were pushed back a year from the pandemic). 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 a…
Beaver Skull Obsession, Aussie Widowmakers, Koalas Eating $#!%
Jan 28, 2026 · 1 hr 9 min
WELCOME TO SEASON 10! Jess hosts the show solo while Rachel is on maternity leave, but brings on a pair of her creator friends to chat about how beavers keep wildfires at bay, koalas eating their moms' poop (kind of), and exploding Australian trees. Follow rickypeacock: https://www.twitch.tv/rickypeacock Follow MattyisTalking: https://www.twitch.tv/mattyistalking The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our …
Bat-Devouring Rodents, Penguin Retirement Home, Chicago "Rat" Hole
Dec 17, 2025 · 58 min
Kendra Pierre-Louis joins Weirdest Thing for the season 9 finale! She talks about the rats chowing down on bats, producer Jess Boddy explains the scientific study on Chicago's rat hole, and Rachel talks about the wonderfully heartwarming penguin retirement home at the New England Aquarium. Plus, Rachel has a very special announcement! 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…
Vintage Antivaxxers, Horror Flick Psychology, Robin-Eating Bats
Dec 3, 2025 · 57 min
Coltan Scrivner joins the show to talk about the strange empathy of horror movie enjoyers. Plus, Sara Kiley talks about bats dogfighting and devouring birds, and Rachel delves into the bizarre history of the first anti-vax movement. 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 o…
Footless Goose Murder, Sex in Space, Viking Sicko Mode, Sports Bra Tech
Nov 19, 2025 · 1 hr 18 min
Behold: our LIVE show from earlier this year at Caveat in NYC! Rachel, Jess, Moiya McTier and Claire Maldarelli each bring a weird fact to the stage. Topics run the gamut this week. We've got an avian murder mystery, why having sex in space sucks, how preworkout is kind of like being a Viking Berserker, and how the sports bra is shockingly new. Tune in for a very special episode! The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us…
Check it out: 'Ask Us Anything' from Popular Science. On this episode, GOOSEBUMPS
Nov 12, 2025 · 15 min
Popular Science answers your most outlandish, mind-burning questions—from the everyday things you’ve always wondered to the bizarre things you never thought to ask. On this episode: Goosebumps are a valuable tool for many animals. They keep mammals with thick fur warm by trapping air near their skin, or help make them look bigger when facing off against a rival. However, in humans a wide range of emotions can also induce goosebumps. BUT WHY? Join PopSci Editor Sarah Durn and Editor-in-Chief Anni…
What Rats are REALLY Saying, Cosmic Caffeine, Lamarck was RIGHT?!
Nov 5, 2025 · 1 hr 4 min
Tom Lum joins the show to reveal what rats are ACTUALLY saying to each other. Plus, Rachel talks about the color of the Universe, and Lauren explains one evolutionary exception. 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…
Ant Yogurt, Bunny Horns, Deadly Feather Fashion
Oct 22, 2025 · 57 min
Liz Clayton Fuller joins the show to talk about the deadly feather trade. Plus, Jess hops in to explain the strange virus causing bunnies to sprout horns, and Rachel gets into the way some folks are using ants to make yogurt. (It's actually kinda good...) Check out all of Liz's art: https://lizclaytonfuller.com/ 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 a…
Check out: On Point with Meghna Chakrabarti from WBUR!
Oct 15, 2025 · 39 min
We're sharing an episode of On Point with Meghna Chakrabarti. On Point is a rare public space where you hear nuanced explorations of complex topics live and in real time. Host Meghna Chakrabarti leads provocative conversations that help make sense of the world, with urgency, timeliness and depth. In this episode: If you feel like car headlights have gotten too bright, you’re not alone. The National Highway Traffic Administration receives more consumer complaints about headlight brightness than a…
Drunk Monkeys, Heroic Rats, Forehead Teeth
Oct 8, 2025 · 46 min
Carly York joins the show to talk about the most heroic rats you'll ever meet. Plus, Sara Kiley talks about some drunk monkeys, and Rachel gets into sharks' toothy foreheads. 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 a…
Skateboard Archeology, Dire Wolf Bones, The Great Fear
Sep 24, 2025 · 55 min
Annalee Newitz joins the show to talk all about how 18th century gossip spread like an actual infectious disease. Plus, Laura delves into how dire wolf bones could help our modern pups, and Rachel talks about the archaeologists who are studying more modern stuff, like skate parks from the 1970s and 1980s. (It's worthwhile!!) Check out Annalee's new science fiction book! https://us.macmillan.com/books/9781250357465/automaticnoodle/ The Weirdest Thing I Learned This Week is a podcast by Popular Sc…
Airborne Butt Cam, Snake Panic, Oops! All Cloacas
Sep 10, 2025 · 1 hr 2 min
Sarah Gailey joins the show to discuss why one scientist put the cutest little monocles on a bunch of chameleons. (And also to talk about their new book, Spread Me, out now wherever you buy books!) Plus, Rachel talks about the great Missouri snake panic, and Lauren talks about an accidental butt cam that lead to some very useful science. 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…
Thank Your Local Horse, OG Canners, Busting Bird Gender Norms
Aug 27, 2025 · 1 hr 2 min
Nathan H. Lents joins the show to discuss why some birds are extra loud in bed, along with his new book: The Sexual Evolution: How 500 Million Years of Sex, Gender and Mating Shape Modern Relationships. Plus, Sara Kiley explains how horses are used to create snake anti-venom, and Rachel talks about how Napoleon played a part in instigating the art of canning food. The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our …
Medical Butt Chugging, Ancient Ice Cream Pyramids, "The Thing" but Midwestern
Ep 15 · Aug 13, 2025 · 56 min
Mary Roach RETURNS to Weirdest Thing to share her new book, Replaceable You: Adventures in Human Anatomy! From this phenomenal new read, she discusses a section on breathing through your butt, a thing not only turtles can do, but also apparently humans. Plus, Rachel talks about the ancient (and DEADLY) origins of ice cream, and Lauren explains a strange, dark goop found on a research boat propeller in one of the great lakes. (Yes, we know it sounds like the premise of a new John Carpenter flick.…
Bette Midler and the Salamander, How Marathon Swimmers Pee, D+D is Good for Your Brain
Jul 30, 2025 · 1 hr 6 min
The wonderful Ryan Mandelbaum is BACK to discuss their latest animalian interest: salamanders in New York City! Laura also explains how peeing while swimming a marathon is shockingly complicated, and Rachel gets into why Dungeons and Dragons is therapeutic for your noggin. Go check out Ryan's newsletter! https://ryanmandelbirder.substack.com/ 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 o…
The Bone Collector, Threads of God, Cloacal Chamber
Jul 16, 2025 · 50 min
Scientific illustrator and Twitch streamer Liz Clayton Fuller (ipaintbirbs) joins the show once more to talk all things cloaca -- and why some birds lack them. Plus, Jess hops behind the mic to talk about the world's rarest pasta, and Rachel dives into carnivorous caterpillars that sound like WWE wrestlers. 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…
A New Green, THIS IS MY EVEREST, Chickens Influencing Cats
Ep 12 · Jul 2, 2025 · 56 min
Actor and creator of the Brat Apple Dance, Kelley Heyer, joins the show! The squad talks about a BRAND NEW green color, cheating at climbing Mt. Everest, and a sneaky trick to make cats less allergenic. 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:…
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