How do bats echolocate? And why don't they get confused by neighbouring signals? Read more
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?