Curious Cases Episodes Available now
The Enigma of Sex, Part 2—Series 9
Why don't we have more than two sexes?
The Enigma of Sex, Part 1—Series 9
Why does sex exist? And why aren't we all the same sex?
Goldfinger's Moon Laser—Series 8
Could we shoot a laser to the moon?
The Curious Face Off—Series 8
Are machines better than humans at identifying faces?
The Cosmic Speed Limit—Series 8
Can anything travel faster than the speed of light? Drs Rutherford and Fry investigate.
The Dreadful Vegetable—Series 8
Why don't children like vegetables?
The Baffled Bat—Series 8
How do bats echolocate? And why don't they get confused by neighbouring signals?
Adventures in Dreamland—Series 7
Why do we dream? Drs Rutherford and Fry delve into the science of sleep.
The Shocking Surprise—Series 7
Why do we get static shocks? Our science sleuths try to crack another case.
The Sticky Song—Series 7
Why do tunes get stuck in our heads? And what makes some songs stickier than others?