Do you want to join the debate on the biggest science prize for the last 300 years?
Until Wednesday June 25th you can quiz our champions to help decide which Longitude Prize challenge to vote for, before the winning challenge is announced on the BBC’s One Show.
Students, to ask questions in the Longitude Zone click here.
Your family and friends can also join in the debate by logging in through their social media accounts at longitude.imascientist.org.uk.
Thanks to NESTA, the innovators of the Longitude Prize, for their support.