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Episodes from The Rest Is Science

Why We Need Zip Lines On The Moon

Why We Need Zip Lines On The Moon

Why would a zip line be the best form of transport on the Moon? Why exactly can your feet still feel other textures right through your socks? Hannah and Michael tackle the spectacular physics of extreme commutes and everyday biomechanics. They unpick the orbital chaos and terrifying vacuum of space, proving why a lunar theme park ride is essentially a brilliant, fiery death trap. Back down on Earth, they dive into the hypersensitive neurology of touch, revealing how your brain decodes microscopic vibrations through layers of cotton to perfectly map the floor beneath...

Apr 1, 202657 min
Two Infinities (And Beyond)

Two Infinities (And Beyond)

Why were the ancient Greeks absolutely terrified of the infinite? How did a boundless mathematical concept start bitter historical feuds? And what happens to reality when you realise that some infinities are actually bigger than others? Professor Hannah Fry and Michael Stevens (VSauce) plunge back into the mind-bending history of infinity, tracking the spectacular panic it caused across the centuries. From individuals trying to mathematically contain it, to others wrestling with its endless quantities, they explore how the greatest thinkers clashed over the universe's most impossible idea. The chaos...

Mar 30, 202648 min
How Evolution Is Shaping Cancer Research

How Evolution Is Shaping Cancer Research

In this very special episode Michael and Hannah look at some of the groundbreaking, jaw-dropping and hope inspiring projects that Cancer Research UK are supporting right now. From identifying tiny "flags" cancer cells show to using cancer's own evolution against it, they show why current research today will hopefully mean a better tomorrow for many. Cancer Research UK are the world's leading cancer charity, supporting research into the ongoing quest to better prevent, detect and treat the disease. ------------------- For more information about Cancer Research...

Mar 26, 202656 min
Paradoxes Of Infinity

Paradoxes Of Infinity

Is infinity actually a real number, or just a brilliant mathematical hallucination? Professor Hannah Fry and Michael Stevens (VSauce) tumble down the numerical rabbit hole to explore the mind-bending origins of infinity. They unpick exactly how humanity managed to trap the endless void. From ancient paradoxes to endless hotel rooms, they dive into the bizarre history of our universe's most impossible idea. ------------------- For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit ⁠⁠https://cancerresearchuk.org/restisscience⁠⁠ Cancer Research UK is a registered charity...

Mar 24, 20261h 0m
Michael's Favourite Science Books

Michael's Favourite Science Books

What do Bill Bryson, Daniel Wegner and J.R.R. Tolkien have in common? They are all part of Michael's reading recommendations. On this episode of Field Notes we answer one of our most frequent inbox questions... "What do you both read?" Alongside that Professor Hannah Fry and Michael Stevens delve into whether some numbers give off "vibes" and the optimal way to use airflow to rid your car of dog hairs and unwanted smells. A handy list of Michael's books (Hannah's will come in the future)! <...

Mar 19, 202652 min
Cognitive Ghosts

Cognitive Ghosts

Ever wanted to squish a puppy just because it’s impossibly cute? Or felt absolutely certain you’ve lived this exact moment before? Hannah and Michael explore the bizarre, everyday glitches of the human mind, unpacking why our brains occasionally seem to short-circuit. They dive into the weird neurology of "cute aggression", or urges like thinking of throwing your phone off a bridge, to the jarring time-bending sensation of déjà vu to reveal how our grey matter manages overwhelming feelings and sudden memory misfires. ------------------- ...

Mar 17, 20261h 10m
Introducing: The Book Club - Never Let Me Go

Introducing: The Book Club - Never Let Me Go

What inspired Kazuo Ishiguro’s timeless story about mortality, growing up, and the human condition? How are its characters so relatable, and yet entirely unique? And, why does the dark secret at its heart challenge scientific innovation? Dominic Sanbrook joins Hannah and Michael to discuss all this and Dominic's new show, The Book Club, available now. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Mar 14, 202626 min
Why We Cry Out In Pain

Why We Cry Out In Pain

Have you stubbed your toe and shouted an unrepeatable word? Isaac Newton and Robert Boyle were two of the greatest minds in humanity. Did their egos and competition with one another hold them back or drive them onto huge breakthroughs? Professor Hannah Fry and Michael Stevens explore the bizarre neurology of vocalised pain, revealing how a good yelp actually acts as a biological off-switch for suffering and unearth if Newton was the biggest crybaby in science. Plus, Hannah gives us a behind-the-scenes look at her brand-new series exploring the...

Mar 12, 202655 min
What's The Most "Vegetable" Vegetable?

What's The Most "Vegetable" Vegetable?

Botanically speaking, there is no such thing as a vegetable, so what exactly is sitting on your dinner plate? And if our culinary world is built on biological lies, which plant is actually the most vegetable like? Professor Hannah Fry and Michael Stevens tackle a chaotic intersection of linguistics, plant taxonomy, and nutrition, dismantling the arbitrary categories we use to organise our food, revealing that our supermarket aisles are a scientifically lawless wasteland. It is a strangely profound look at how human language struggles to categorise the natural world, proving that the things we eat every...

Mar 10, 202651 min
How Words Shape Your Body

How Words Shape Your Body

Does your native language physically sculpt your face? And could a swarm of bees be trained to run computer code? Two of your questions answer in this Field Notes with Professor Hannah Fry and YouTube's Michael Stevens, plus Michael’s object of the week is a visualization of the Holocene Calendar. By simply adding ten thousand years to our current year, it transforms our perception of history from a brief modern blip into an unbroken, monumental narrative of human progress. Check out the calendar here ...

Mar 5, 202649 min
You Don't Exist For One Third Of Your Life

You Don't Exist For One Third Of Your Life

Humans have split the atom, we can stream movies from space and are working towards everlasting life. So why in the world are we still spending a third of our lives unconscious? In this episode of The Rest Is Science, Hannah Fry and Michael Stevens ask a deceptively simple question: Can human beings cure sleep? Why do evolutionary forces cause us to lie helpless for eight hours a night when predators might lurk? Why can elephants survive on two hours but bats basically exist to nap? And what really ha...

Mar 3, 20261h 0m
How To Fall To Earth (Without Burning Up)

How To Fall To Earth (Without Burning Up)

Rockets are built to slice cleanly through the atmosphere on the way up. Coming home, it turns out, requires... not turning into a fireball before a bellyflop When Space Shuttles reenter Earth’s atmosphere at 17,000 miles per hour, they don’t dive nose first. Instead they turn broadside to the atmosphere, deliberately creating more drag, more friction, more heat. At those speeds, oncoming air compresses into a shockwave hotter than molten lava. In this episode of Field Notes, Professor Hannah Fry and Michael Stevens explore the strange physics of comi...

Feb 26, 202643 min