The Rest Is Science

The Rest Is Science

Join mathematician Professor Hannah Fry and science creator Michael Stevens (Vsauce) as they dig into the weird scientific questions that often go unexplored. Welcome to The Rest Is Science, a show that sits in the fascinating space between what we think we know, and what we actually know. Why do we assume we understand things like time, randomness, or even gravity? Once you start questioning these familiar ideas, reality becomes astonishingly strange and completely fragile. Whether you're a lifelong science fan or just naturally curious, The Rest Is Science will change your perception of reality, and prove that the biggest questions are always the most fun.

Episodes

Space Elevators, Skyhooks, and Space Fountains

August 23, 2026 • 65 mins
What is the fastest, cheapest and possibly worst way to get into space? Could a nuclear explosion launch a manhole cover beyond the Earth’s atmosphere? And could space elevators, skyhooks or launch loops one day replace rockets? In this episode, Professor Hannah Fry and Michael Stevens (VSauce) explore where space really begins, why orbit means falling forever, and how Newton’s cannon explains the motion of t...
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Hannah Ranks Michael's Bizarre Watches

August 19, 2026 • 54 mins
Michael Stevens keeps a small museum of unusual timepieces on his desk: a clock that runs backwards, a watch built to be read in complete darkness, and one whose entire face simply says "now." Each is a miniature experiment in the psychology of time, and each reveals something surprising about how our perception of time shapes the way we understand uncertainty and the world around us. The conversation then turns to logic and...
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Why Your Brain Thinks You're Full (Even When You're Not)

August 16, 2026 • 46 mins
How did the Gila monster, a desert lizard that eats just five times a year, help unlock the science behind Ozempic, Wegovy and Mounjaro?In this episode of The Rest Is Science, Professor Hannah Fry and Michael Stevens (Vsauce) trace the strange journey from a molecule found in lizard venom to medicines reshaping diabetes and weight-loss treatment, exploring how GLP-1 helps regulate blood sugar, appetite and the hum of ‘food no...
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The Lake At The North Pole That Stops Europe From Freezing

August 12, 2026 • 47 mins
When you picture the North Pole, you probably imagine a vast, frozen expanse of floating sea ice. But hidden deep beneath the surface of the Arctic lies something incredible: a massive, churning reservoir of nearly freshwater, suspended right in the middle of a saltwater ocean. In this episode of The Rest Is Science, Professor Hannah Fry and Michael Stevens (VSauce) explore the hidden hydrodynamics of the Arctic. Fresh off a rea...
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The Science of Putting Sunglasses on The Sun

August 9, 2026 • 60 mins
Why does the cartoon Sun always wear sunglasses? And how big would a real pair need to be? Hannah Fry and Michael Stevens investigate space mirrors, Reflect Orbital and solar eclipses to find out. Starting with a pencil held at arm’s length, they use the Sun’s angular diameter to calculate how big a pair of solar sunglasses would need to be for one eye, two eyes, everyone in London and eventually the entire planet...
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Why Is It A Colour Wheel & Not A Line?

August 5, 2026 • 47 mins
Colour wheel or colour line? Light itself runs in a straight line from red to violet, yet every colour theory chart bends that spectrum into a circle and the reason has nothing to do with physics. Professor Hannah Fry and Michael Stevens (VSauce) dig into why human vision refuses to see colour the way light actually behaves, tracing the visible light spectrum from one end to the other and asking where all the "missing" colours,...
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Why Lithium Batteries SUCK

August 2, 2026 • 54 mins
Can Hannah convince Michael that the lithium-ion battery is one of our most overrated inventions to ever happen? Hannah makes her case using a surprising energy source hidden in your fridge, a bell in Oxford that's been ringing since 1840, and a metal that is useful… but prone to bursting into flame from the inside out. Tracing the battery's strange history, from a twitching dead frog to the executed man who helped inspire...
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What Happens Inside Earth's Forbidden Zones?

July 29, 2026 • 45 mins
What grows in the spaces humans are forced to abandon?Hannah brings Michael an actual piece of barbed wire from the Korean Demilitarised Zone, one of the most heavily fortified and forbidden borders on Earth, and it sends them somewhere unexpected. From deserted no man's land and radioactive exclusion zones to remote islands that most of humankind has quietly agreed to leave well alone, they explore the surprising ways life adapts...
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It Wasn't A Hoax After All

July 26, 2026 • 59 mins
Did the world really end in 2012? Not with fire, meteors or an ancient Mayan prophecy, but Professor Hannah Fry and Michael Stevens ask whether something just as profound took place instead. Together they unravel how one of the biggest myths in history took hold and why the Maya were unable to accurately predict the apocalypse. But they also delve into why, according to Michael, 2012 was the year an old world was discarded a...
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Hack Dog Vision To Keep Your Bones Safe

July 22, 2026 • 45 mins
Can you hide your skeleton from a dog? Would you want to know the day you’ll die? Has evolution ever come close to producing a real fire breather? Michael and Hannah test a T-shirt with a secret only humans can see, leading them into the strange world of colour vision, from colourblindness and tetrachromacy, to the remarkable eyes of the mantis shrimp. They also ask whether DNA could become the ultimate hard drive, visi...
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The Hole In Your Brain That Makes You Doomscroll

July 19, 2026 • 49 mins
Why can't you leave a sealed envelope unopened? Professor Hannah Fry begins by refusing to allow Michael Stevens to open a mystery envelope addressed to him. A small act of torture that turns out to be the perfect way in to today's subject: curiosity. What is it, why does it feel almost physical, and how far will people actually go just to resolve a nagging uncertainty? From there Hannah and Michael trace curiosity's surprising...
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A Man-Eating Tiger Found In London

July 15, 2026 • 41 mins
It begins with a discovery in a loft: a full man eating tiger skin, brought back from a village in northern India where Professor Hannah Fry's ex-mother in law grew up. That find sends Hannah and Michael Stevens into the strange world of man eating big cats: a tigress blamed for a staggering number of deaths, what can turn a tiger toward hunting humans in the first place, and how India now borrows techniques from forensic science&...
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All The People You Don't Know

July 12, 2026 • 56 mins
Do your friends actually like you? Does an acquaintance think you’re closer than you are? This week, Hannah Fry and Michael Stevens explore the surprising psychology of friendship, from familiar strangers and para-social relationships to the unsettling discovery that nearly half of friendships may not be mutual. Why are we so bad at judging who considers us a friend? Why do strangers often have a bigger impact on our li...
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An Honest Dad Ranking (Out Of All 2 Billion)

July 8, 2026 • 41 mins
The statistical reality of "The World's #1 Dad Mug" is nothing but a well meaning lie. In this episode of The Rest Is Science, Michael brings another treasured artifact into the studio: a mug gifted by his daughter. Rather than claiming the top spot, the mug features a specific, mathematically defensible ranking of his fatherly abilities. If he's not the very best...surely he's in the top percentile? Find out on Field Notes. ...
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Your Brain Invents Pain. Here's Why.

July 5, 2026 • 51 mins
Stubbing your toe feels like the pain is entirely in your foot. But the reality is far stranger... the agonising sensation you experience is actually a highly complex, constructed illusion, invented in real-time by your brain.In this episode of The Rest Is Science, Professor Hannah Fry and Michael Stevens (VSauce) explore the weird neuroscience of human pain and why pain is ultimately a brilliant evolutionary survival mechanism, ho...
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The Most Dangerous Rock In Hannah's Collection

July 1, 2026 • 56 mins
When you think of dangerous geological specimens, does your mind jump straight to radioactive uranium, toxic heavy metals, or even asbestos? What if one of the most dangerous items sitting on a shelf is actually a polished, perfectly ordinary-looking piece of black obsidian? Professor Hannah Fry and Michael Stevens dive into the surprisingly treacherous geology and chemistry of obsidian. Hannah brings an onyx from her personal r...
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The Audio Illusion That Proves We Don't Experience Reality

June 28, 2026 • 57 mins
Your ears are lying to you right now. In this episode of The Rest Is Science, Professor Hannah Fry and Michael Stevens (Vsauce) dive into the bizarre world of audio illusions where your brain hears sounds that don't exist, fills in frequencies that were never there, and constructs a version of reality that simply isn't real. From the impossible endless ascending tone to the battle between your eyes and ears, explore how auditory...
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Will A 25 Year Old Space Pen Still Write?

June 24, 2026 • 48 mins
A pen designed to write in space sits unopened for 25 years. Does it still work?In this episode of Field Notes, Michael Stevens finally opens a treasured souvenir from his time at Space Camp: a genuine Fisher Space Pen that has been waiting decades for its first scribble. From there, the conversation launches into the challenges of living in space, why astronauts abandoned pencils, and what happens to your sense of direction when g...
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A Paleontology Of The Future

June 21, 2026 • 55 mins
What will humanity leave behind? In this episode, Professor Hannah Fry and VSauce's Michael Stevens explore the traces humans leave behind and what those traces reveal about how we think. From Tranquility Base, where humanity's first footprints on another world still sit undisturbed in lunar dust, to a three million year old pebble that may represent one of the earliest signs of symbolic thought, they uncover how ordinary ob...
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What Are The Odds You'll Become A Fossil?

June 17, 2026 • 39 mins
Most living things vanish without a trace. A select few become fossils. But how? In this episode of Field Notes Professor Hannah Fry and VSauce's Michael Stevens dig into the unlikely process that turns bone into stone. From prehistoric seas hidden beneath Kansas to fossils mistaken for mythical creatures, they follow the clues that reveal Earth's deep past. Along the way they uncover the lost landscape of Doggerland, in...
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