Have you ever wondered 'what if…?' and never found your answer? Well, hundreds of young people (Aged 11-18) from across the UK sent in their unanswered questions to our panel of over 30 of the world's leading scientists, engineers and inventors!

The initiative was a part of National Science & Engineering Week (15-24 March 2013) and some of the questions were fantastic! Click on an expert below to see the questions they were sent and to see their answers - the key is at the bottom of the page.

If you have a question for an expert, keep an eye on this page as we will be announcing future initiatives soon.

Alex Deakin Amanda Ursell Prof Andrea Sella
 Prof Colin Blakemore Dallas Campbell  Dame Ellen MacArthur
 Fiona Fairhurst Prof George Havenith Gordan Buchanan 
Dr Helen Czerski Dame Jane Goodall  Prof Jim Al-Khalili
Prof John Mather  Kate Bellingham Dr Lewis Dartnell
 Liz Bonnin Dr Maggie Aderin-Pocock Mark Champkins
Mark Thompson Miranda Krestovnikoff Neil Patterson
Paul Foster Pete Reed MBE Rachel Riley
 Ricky Martin Prof Lord Winston Sarah Cruddas 
Dr Shini Somara Stefan Gates Steve Leonard
Sir Tim Hunt Major Tim Peake Trevor Baylis OBE
Dr Venki Ramakrishnan Dr Yan Wong Yewande Akinola