Have you ever wondered why the sky is blue? Could you explain why ice cream melts? Have you forgotten why scientists think the universe started with a Big Bang, and do you understand the difference between respiration and breathing? 'Why Don't Things Fall Up?' will gently remind you of everything you may have learnt once upon a time, but have somehow forgotten along the way. If you've ever changed the subject when a child has asked for homework help, or if you have forgotten the basics of science - then this is the book for you. Using questions asked by children as a starting point, Alom Shaha takes us on a tour of the 'big ideas' of science from his unique perspective.