Could we live on another planet?
The Space Pirate
The Portly Problem
What causes middle-aged spread?
The Strongest Substance
What is the strongest thing in the universe?
The Melodic Mystery
'Why is my mother tone deaf?' asks listener Simon. The team investigates.
The Hunt for Nothing, Part 1
Does nothing exist? Our scientific duo consider the nature of nothing.
The Hunt for Nothing, Part 2
How zero was discovered and why it allows us to forecast the future.
The Bad Moon Rising
Does the full moon make us act strangely?
The Lost Producer
Why do some people have a terrible sense of direction?
The Broken Stool
How much does the bacteria inside my body weigh?
The World That Turns
'Why does the Earth spin?' asks Joe Wills from Accra in Ghana.
A Code in Blood
Why do we have different blood types? Drs Rutherford and Fry investigate.
The Astronomical Balloon
'How far up can a helium balloon go? Could it go out to space?' asks Juliet Gok, aged 9.
The Forgetful Child
Why don't we remember the first few years of our lives?
The Cat Who Came Back
How do cats find their way back to their old home when they move house?
The Burning Question
What is fire? Is it a solid, liquid or a gas? Adam Rutherford and Hannah Fry investigate.
The Dark Star
The science sleuths investigate the question 'What's inside a black hole?'.
Itchy and Scratchy
Why do we itch and should we scratch?
Kate Bush's Sonic Weapon
Can sound kill? Inspired by a Kate Bush song, we ask whether sonic weapons could work.
The Curious Cake-Off
How to make the perfect sponge using the power of science.
The Polar Opposite
What would happen if the Earth's magnetic poles flipped?
The Sticky Song
Why do tunes get stuck in our heads? And what makes some songs stickier than others?
The Shocking Surprise
Why do we get static shocks? Our science sleuths try to crack another case.
Adventures in Dreamland
Why do we dream? Drs Rutherford and Fry delve into the science of sleep.
The Baffled Bat
How do bats echolocate? And why don't they get confused by neighbouring signals?
The Dreadful Vegetable
Why don't children like vegetables?
The Cosmic Speed Limit
Can anything travel faster than the speed of light? Drs Rutherford and Fry investigate.
The Curious Face Off
Are machines better than humans at identifying faces?
Goldfinger's Moon Laser
Could we shoot a laser to the moon?
The Enigma of Sex, Part 1
Why does sex exist? And why aren't we all the same sex?
The Enigma of Sex, Part 2
Why don't we have more than two sexes?
The Tiniest Dinosaur
Which is the tiniest dinosaur?
The Atomic Blade
What makes things sharp?
The Cosmic Egg
How do we measure the age of the universe?
The Fifth Dimension
Is there a fifth dimension? Hannah and Adam visit CERN to find out.
The Human Instrument
Why do our voices change as we get older?
The Déjà Vu
Why do we get déjà vu?
The Lucky Number
How do I win the lottery?
The Dawn Chorus
Why do birds sing? And why are some songs so complex?
The Alien Enterprise Part 1
How do we look for alien life, and what are we expecting to find?
The Alien Enterprise Part 2
Are intelligent aliens out there?
The Running Joke
How fast can a human run?
The Random Request
Is anything really random?
A World of Pain
Why do we all have different pain thresholds?
The Viking Code
How do ancestry DNA tests work?
The Stressful Scone
Why do we have regional accents?
Two Infinities and Beyond Part 1
Does infinity exist? And why are some infinities bigger than others?
Two Infinities and Beyond Part 2
Is anything in the universe infinite?
The Good Bad Food
Why does bad food taste so good?
The Horrible Hangover
Why do we get hangovers and are some drinks worse than others?
Coming Soon – More Curious Cases
Hannah and Adam return to crack open the Curious Cases they’ll be examining in Series 13
Is hypnotism real? Drs Rutherford and Fry find out by visiting a hypnotist.
The Periodic Problem
How do you discover a new chemical element?
An Instrumental Case
Why do instruments sound different?
The Lunar Land Pt 1
Where did the Moon come from?
The Lunar Land Pt2
What would life be like if we had two moons?
What sound did dinosaurs make?
A celebration of the first moon landing and the Welsh people who played vital roles.
Professor Brian Cox and Shaun Ryder
The Prof talks Stargazing Moon Landings and Shaun Ryder in on tour with the Mondays
Helen Needham attends the Backbone Outdoor Festival for All in the Loch Lomond and the Trossachs National Park.
She discovers how spending time in the outdoors can be therapeutic for everyone.
Sam Dilcock celebrates rural life in North Yorkshire.
Pick Your Own
Sue 'picks her own' with the man who runs Lotmead Fruit Farm in Swindon.