Series 20

The Riddle of Red-Eyes and Runny-Noses

“Are allergies really on the increase?” wonders Ally

• 36 mins

Series 20

The Puzzle of the Plasma Doughnut

“How does fusion work, and how can we do it safely on earth?” asks Les Walker

• 39 mins

Silly Studies: The Pre-Series Teaser

We’re almost back! As a cheeky aperitif, our sleuths review some surprising science.

• 12 mins

Series 21

The Case of the Blind Mind's Eye

'Why can't I see images in my mind?' asks Jude from Australia.

• 43 mins

Series 21

The Magnetic Mystery

What is a magnetic field? wonders Lucas.

• 43 mins

Series 21

The Puzzle of the Pyramids

Did aliens build the pyramids!?

• 36 mins

Series 21

The Resurrection Quest

Can we bring extinct species back from the dead?

• 38 mins

Series 21

The Mind Numbing Medicine

'How do anaesthetics work?' asks Alicia.

• 43 mins

Series 21

The Impossible Number

What is the 'imaginary' number - and why is it so incredibly useful?

• 41 mins

Introducing… Uncharted with Hannah Fry

Tales of data and discovery with Hannah Fry.

• 14 mins