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We build NEW WORLDS as we learn REAL SCIENCE about the limits of the COSMOS. Join us in exploring the science of SPACE, cosmology, physics, life, the UNIVERSE and everything! How do we do it...
Picture this: you're a moon baby, born and raised underground on Luna, and you've just landed on Earth for the very first time. Meet the loo...
What the if microbes held a grudge? We're thrilled to welcome Ethan Rappaport, theoretical ecologist at the University of Maryland, to take...
In honor of the 25th anniversary of the MIR SPACE STATION's spectacular farewell reentry, we're featuring an encore of our August 11, 2023 e...
What the if you could read minds — but only when someone's nearby? Congratulations, your subway commute just became a psychic nightmare. Bab...
Right now, billions of particles are popping in and out of existence in your pocket. That's not a metaphor — that's quantum mechanics. Inspi...
What the if you got zapped by a shrink ray while walking past the physics department and your only hope of survival was convincing a colony...
What the if humans moved in schools — not classrooms, but like fish? Inspired by Carl Zimmer's New York Times article on how misinformation...
MIT physicist David Kaiser is one of those rare scientists who can make mind-bending physics feel like a great conversation over coffee — fu...
A conspiracy theory went viral claiming that on August 12th, 2026, Earth will lose gravity for seven seconds. The internet did what the inte...
What the if a groundhog could actually predict the weather? Turns out Punxsutawney Phil would need way more than a shadow — we're talking a...
We first shared this one on Super Bowl Sunday 2019 — what better weekend to bring back nature's ultimate underdog? Enjoy this encore present...
Planetary geologist Kirby Runyon from the Planetary Science Institute needs volunteers to map ancient impact melt flows on the moon from the...
We're taking a break this week while Philip recovers from the 'double-whammy' of flu and COVID boosters. (Science works, but sometimes it ma...
What the if your New Year's resolution became a biological compulsion you literally could not ignore? Imagine waking up on January 1st with...
What the if time suddenly started running backwards? Your breakfast un-eats itself, LEGO sets come pre-assembled, and you get younger every...
Listener Anne of Queens got us thinking about flying reindeer for the holidays. Imagine herds of 1,500-pound mammals migrating through your...
What the if the Sun suddenly turned green? Your pizza now looks like charcoal because all red things go black. Stop signs become invisible....
Happy Thanksgiving! We're off this week for the holiday, so we're presenting an encore presentation of an episode that was originally broadc...
Scientists just discovered ant queens that give birth to two completely different species - not twins, but actual separate species hatching...
This week we're trading hypothetical fungi and exploding planets for something scarier: actual government budgets. But don't worry - watchin...
What the if mosquitoes were helpless against the sweet smell of their own doom? Scientists genetically engineered Metarhizium fungus to smel...
What the if Frankenstein was real and doctors actually tried stitching corpses together to create new people? Forget dramatic lightning stri...
What the if all bodies of water on Earth were fizzy like soda? In the real world, Seneca Lake in New York produces mysterious underwater boo...
Honey guide birds in Africa respond to culturally distinct human calls and lead hunters to beehives, where humans crack them open and birds...
Scientists just used artificial intelligence to design the world's first AI-generated viruses capable of hunting down and killing drug-resis...
What the if your brain literally ran out of storage space like a laptop refusing to save one more file? Neuroscientist Nikolay Kukushkin exp...
What the if gravitational waves were big enough to see and feel? Instead of measuring distortions smaller than a proton, imagine watching yo...
What the if you found a rock on Mars that might - emphasis on might - show signs of ancient life? NASA's Perseverance rover discovered intri...
Our guest this week is science fiction author Nicholas Casbarro, who brings us a universe-changing concept from his novel Vitalerium - a rad...
D'oh! We had technical difficulties this week and so we are presenting this encore presentation of one of our most popular episodes. It also...
What the if the speed of light crawled along at walking speed instead of zipping around at 300,000 kilometers per second? Tracey McCallum fr...
Matt & Gaby are on assignment this week, so we present an encore presentation of one of our most popular episodes. This one is super fun and...
What the if there was a nuclear reactor on the moon? NASA wants to launch a 100-kilowatt nuclear reactor to the lunar surface before 2030, p...
Anne from Queens, a longtime listener and proud sticker-carrying Patreon supporter, inspired this week's episode by asking: what the if huma...
What the if we just kept making telescopes bigger and bigger until they're the size of entire planetary orbits? Starting with the new Vera R...
Apologies for the delay in posting episodes! Holiday and travel got the best of us. But we're back, baby! ---- WHAT THE IF we could trade ge...
What the if we could go back to 1930 and experience the reluctant discovery of an entirely new kind of particle? When electrons started boun...
[Matt & Gaby are away this week, so please enjoy this Encore Presentation of one of our most popular episodes.] What The IF... you could see...
What if climate change made submarines completely undetectable? As ocean temperatures rise, thermal layers are disrupting sonar so dramatica...
What if the universe was stuck in an eternal cosmic Groundhog Day? Picture traveling backwards through time past the Big Bang only to discov...
What if teaching robots to play badminton was the beginning of the end? Scientists at ETH Zurich have successfully trained four-legged robot...
We're off this week for the Memorial Day Holiday in the US so we present here one of our most popular episodes, a classic IF from August 13,...
What if gene editing treatments become commonplace? Explore a world where a single DNA letter gets fixed with just three little shots, trans...
What if you could build up a resistance to absolutely anything through repeated exposure? Inspired by the real-life story of Tim Friede, who...
What if humans and all mammals hatched from eggs? This episode explores a world where expectant parents carry decorated eggs to work, confer...
Experience outer space without leaving Earth's atmosphere! Join planetary geologist and space lifestyle coach Kirby Runyon as he guides us t...
Embark on a mind-bending thought experiment as our intrepid explorers dive deep into the annals of history, imagining how early humans might...
What if humans never stood upright and remained quadrupeds? Our world would transform into a society where everything is built low to the gr...
What if the fundamental forces of nature could change with time? Step into a universe where gravity might send you floating to the ceiling o...
What if filmmakers took their cameras to space? Prepare for a world of zero-G cinematography! From weather-sealed cameras designed to handle...