Caroline Steele

Dougie and Molly, thank you so much for sending in your questions. And now all that's left is to hand over to you for the credits. You've been listening to Crowd Science from the BBC World Service. The question was from me, Molly, in London in the UK. And me, Dougie. The producer was Tom Bonnet and the presenter was Caroline Steele. If you've got a question, email crowdscience at bbc.co.uk. Thanks for listening.