WHY DO YOUR FINGERS GO WRINKLY IN THE BATH?HOW LONG CAN 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 color is the sun? With Brian Clegg, science has never been so much fun.