An explosive look at chemistry with Robert Winston, All about Chemistry answers all those intriguing questions your kids ask... Why are helium balloons lighter than air? What are the secrets of the Philosopher's Stone? All About Chemistry takes an amazing look at the what, why and how of science. From the geeky Greeks to explosive elements kids can enter a world of discovery as they find out the extraordinary way our world works. It's chemistry, but not as you know it.