Students have spoken. The votes have been counted. Congratulations Keith, we look forward to hearing how you spend your £500 prize money.

Hard luck to Heather and thank you to all the other scientists who took part. You were all brilliant and each and every single one of you has contributed to the great success of this event. We’ve had two weeks of hot debate, stimulating chat and mind-boggling facts.

Students, don’t forget to tell us what you think about science now you’ve taken part. Log in and fill in 4 quick questions in the pink box on the right of the browser, to be in with a chance to win a £20 WH Smith voucher.