Why do your fingers go wrinkly in the bath? How long can a goldfish remember things? Who thought up Newton's First Law?
Science is all about finding answers to mind-boggling questions - so following the hugely successful "How Many Moons Does the Earth Have?", here are another 100 brain-teasers to test yourself, discover some amazing answers, and learn a lot of stuff along the way!
Where does brown belong in the spectrum? What is a Zener card? And what colour is the sun? With Brian Clegg, science has never been so much fun!
Author: Brian Clegg