Series 18

The Guiding Hound

How do guide dogs know where they're going?

• 39 mins

Series 18

The Weirdness of Water Part 1/2

Please explain the weirdness of water? Drs Rutherford and Fry investigate.

• 37 mins

Series 18

The Weirdness of Water Part 2/2

Adam Rutherford and Hannah Fry attempt to answer more questions on why water is weird

• 40 mins

Series 18

The Painless Heart

Why does my heart not ache after exercise? Drs Rutherford and Fry investigate

• 37 mins

Series 18

The Slippery Situation

'What is the most slippy thing in the world?' asks 8 year old Evelyn from London

• 37 mins

Series 18

The Venomous Vendetta

Will a venomous snake die if it bites itself? asks Janni in Amsterdam

• 42 mins

Series 19

The Mystery of the Teenage Brain

Why do my teens struggle to get out of bed in the morning? asks Michelle.

• 33 mins

Series 19

The Weird Waves of Wi-Fi

“How does Wi-Fi work - is it magic?” asks Abby

• 34 mins

Series 19

Surprising Symmetries

We’ve got two eyes, two arms, two legs - but only one heart. Why!? asks Joanne.

• 33 mins

Series 19

The Shocking White Hair

Can human hair turn white overnight from shock? Hannah and Adam investigate greying hair.

• 34 mins

Series 19

The Turn of the Tide

Why are tide times and ranges so different around the UK, asks Lynn?

• 34 mins

Series 19

The Colour Conundrum

'How do we see colour - and why are some people colour blind?’ asks Maya Crocombe.

• 35 mins

Series 20

The Case of The Missing Gorilla

'How can I be immersed in a book, and still notice my name?' asks Charlotte.

• 37 mins

Series 20

The Wild and Windy Tale

“How do winds start and why do they stop?” asks Georgina from the Isle of Wight

• 38 mins

Series 20

The Suspicious Smell

Why do our bodies smell? And does our smell influence how much we like each other?

• 38 mins

Series 20

The Problem of Infinite Pi(e)

'How did we discover pi? How do we know that it’s infinite and never repeats?' asks Alex.

• 35 mins

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

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

Series 22

Introducing a brand new series of Curious Cases!

Hannah Fry and Dara Ó Briain answer your quirkiest questions with SCIENCE.

• 2 mins

Series 22

1. Space Bubbles

Hannah Fry and Dara Ó Briain investigate giant bubbles...

• 28 mins

Series 22

2. The 5 Second Rule

Hannah Fry and Dara Ó Briain investigate the science behind the 5 Second Rule.

• 28 mins

Series 22

3. Mirror, Mirror

Hannah Fry and Dara Ó Briain apply their scientific super-powers to all things shiny.

• 30 mins

Series 22

4. In the Groove

Hannah Fry and Dara Ó Briain get in the groove as they investigate the science of rhythm.

• 30 mins

Series 22

5. The Taste of Words

Hannah Fry and Dara Ó Briain investigate why some people can literally taste words.

• 29 mins