Unexpected Elements
Bald caps, sparrow raps and lightning claps
49:30
If you were lucky enough to be at rapper Pitbull's recent concert in Hyde Park in London, you would have been greeted by a sea of bald caps. A Guiness World record-breaking sea of 22,141 bald caps. And, in honour of this incredible feat, the Unexpected Elements team are exploring some science.
First, is hair the secret to healing? We find out why trading fur for sweat may have had unexpected…