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As a reluctantly gap-toothed woman, Patricia Cumper explores their cultural significance.
BBC Radio 4
Is the world ready for Scottee's personal brand of fat activism? You be the judge.
Why does symmetry exist and why do we see such beauty in it?
BBC World Service
Artist Grayson Perry, a train driver and a detective novelist on why they cross dress
Crying emotional tears is uniquely human but why do we do it?
Where did the fascination with elevated footwear come from? Why wear high heels?
Why can the ubiquitous act of bathing mean so many different things for different people?
Why millions of women - and some men - paint their faces
Where did the fascination with elevated footwear come from and what do they tell us?
Why do we care so much about the hair on our heads? Join Mike Williams to find out why.