Robert Winston launched his new, pop-up children’s science book at Hay Festival. Publisher’s Dorling Kindersly organised the early publication of 125 copies of the book, which is out in July 2014.

Professor Winston promoted science to an audience of 1100 children and their families and answered questions such as “What are butterfly wings made of?’ and ‘If the Earth is round and turning, why are we never upside down?’