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Frosty Fractals
Jan 02, 2026 29 min

Frosty Fractals

One winter morning, listener Jane opened her curtains to find her car roof covered in breathtaking, fern-like frost so intricate it looked like a William Morris print. But how does something as ord...

Mining for Gold (GOLD!)
Dec 31, 2025 27 min

Mining for Gold (GOLD!)

From pharaohs' tombs in Ancient Egypt and medieval currency, to priceless royal jewellery and Spandau Ballet songs - gold has been prized for millennia. But it's only really in the last century or...

Phantom Pain
Dec 19, 2025 28 min

Phantom Pain

What exactly is 'phantom pain' and how does it work? Hannah and Dara investigate a medical phenomenon that's been known about for centuries but is often misunderstood; and involves masses of unansw...

Tortoise Tomfoolery
Dec 12, 2025 28 min

Tortoise Tomfoolery

Tortoises have traditionally been the poster child for slowness. These ancient, armoured reptiles are solitary, territorial and all-too-often dismissed as dull.In fact, tortoises have distinct pers...

Planetary Wobble
Dec 05, 2025 28 min

Planetary Wobble

Could you survive an eternal winter? Or is endless summer sun a more appealing prospect? Lots of us are grateful for the seasonal changes that shape the world around us, but this week Hannah and Da...

Immortal Jellies
Nov 28, 2025 28 min

Immortal Jellies

Could immortality ever be possible for humans? It sounds like something from a sci-fi movie, but floating in oceans around the world is a tiny, transparent jellyfish that could hold the answer...Tu...

Mysteries from the Final Frontier
Nov 21, 2025 28 min

Mysteries from the Final Frontier

Space: the final frontier, a deep dark realm full of questions and mysteries - many of which science can't yet satisfactorily answer. But that won't stop the Curious Cases team!In a special editio...

Beam Me Up, Scotty!
Nov 14, 2025 28 min

Beam Me Up, Scotty!

Whether you’re stuck in traffic, waiting at the airport whilst delay after delay is announced or just really missing someone far away, a lot of us have probably wished we could teleport. But is thi...

Going Viral
Nov 07, 2025 28 min

Going Viral

Cold and flu season is well and truly upon us, and whilst most of us are busy bemoaning the pesky viruses behind our sniffles and chesty coughs – one of our listeners has other ideas. Elizabeth wan...

We Didn't Start the Fire
Oct 31, 2025 28 min

We Didn't Start the Fire

It has been said that you can't start a fire without a spark, but as Hannah and Dara are about to discover, that's not true!Welcome to the fiery phenomenon of spontaneous combustion, when something...

Just My Luck
Oct 24, 2025 28 min

Just My Luck

Are you a lucky person? Do the cards just fall well for you? Whether it's always finding a parking spot when you need one or chance encounters that change your life's trajectory for the better, som...

Good Vibrations?
Oct 17, 2025 28 min

Good Vibrations?

It turns out that the whole world wobbles. Everything has a natural frequency - the rate at which it moves when disturbed - be it a cup of tea, a building or a human organ.Even more incredibly, if ...

To Crab, or Not to Crab?
Oct 10, 2025 29 min

To Crab, or Not to Crab?

We can all picture a crab, but did you know that nature has reinvented those claw clicking, sideways scuttling crustaceans at least five separate times? In recent years the internet has run wild w...

Trailer
Oct 01, 2025 2 min

Trailer

Hannah Fry and Dara Ó Briain return to Curious Cases HQ for a brand-new series. And curios, there’s a lot to unpack! Coming soon to BBC Sounds.

Clever Crows
Jul 04, 2025 28 min

Clever Crows

The term 'bird brain' might suggest our feathered friends are stupid, but Hannah and Dara learn it's completely untrue. They play hide and seek with a raven called Bran, and hear how his behaviour ...

Memory Swap
Jun 27, 2025 30 min

Memory Swap

Could you ever trade memories with someone else? Fancy downloading the experience of landing on the moon, winning an Oscar or performing at Glastonbury? Listener Adam wants to know, and Hannah Fry ...

Clowns in Spacetime
Jun 20, 2025 29 min

Clowns in Spacetime

Can you slow down time by hurtling through space at breakneck speed? Could listener Saskia’s friend - currently one year older - end up the same age as her if he went fast enough? It sounds bananas...

Colossal Creatures
Jun 13, 2025 28 min

Colossal Creatures

How big can animals really get before they collapse under their own weight or run out of snacks? Could a 12-foot comedian survive their first punchline without snapping in half? Listener Andrew sen...

Nano Sharks
Jun 06, 2025 29 min

Nano Sharks

Think of a shark and you'll probably conjure up images of Jaws, but it turns out their skin is also covered in tiny teeth. Hannah and Dara investigate the incredible properties of these so-called d...

Chuckle, Snigger and LOL
May 30, 2025 29 min

Chuckle, Snigger and LOL

Why do we giggle, snort, and bust a gut laughing? Is it just humans being weird, does it serve some higher function or do other animals crack up too? And, okay, Dara is a comedian, but has he ever ...