About the Author

Clive Gifford is an award-winning author of more than 200 books for children and young adults. His titles published by Ivy Kids include The Human Body in 30 Seconds, Brain Twisters, and Eye Benders, winner of the 2014 Royal Society Young People's Book Prize.

Paul Boston studied illustration and design at Brighton University, and is inspired by 1950s children's books, antique maps and diagrams, 17th Century engravings, Gothic art and Japanese prints. Paul's charming depictions of people and places have been commissioned for global advertising campaigns, publishing projects and editorial commissions.

Reviews

4* 'now I have read Clive Gifford's absorbing Book of Comparisons, and my brain has become a mine of astonishing facts...lavishly illustrated... the sort of jaw-dropping statistics with which children love to outdo each other'
*Daily Telegraph*