The Why Factor Episodes Available now
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Running
In the UK, running is increasing in popularity. So why are we running now more than ever?
Nitrogen: Forgetting Fritz
Fritz Haber harnessed nitrogen to feed billions, but was also the pioneer of gas warfare
Debt
How the way we borrow and lend money is changing
Cross Dressing
Artist Grayson Perry, a train driver and a detective novelist on why they cross dress
Crying
Crying emotional tears is uniquely human but why do we do it?
The Heel
Where did the fascination with elevated footwear come from? Why wear high heels?
Solitude
How far can or should we pursue solitude?
Secrets
They represent power, they can generate fear, but why do we have secrets?
Optimism and Pessimism
Why do some people have a darker outlook on life while others have a brighter one?
The Lie
How different cultures define telling the truth
