Did the universe start with a Big Bang? Is light a wave, a particle - or both? Is a "Theory of Everything" possible? Explaining the key milestones in the field of science in a clear and simple way, The Science Book answers these questions and more besides, and is the perfect introduction to the subject. Untangling knotty theories and shedding light on abstract concepts, entries unpack each complex idea with a combination of easy-to-follow explanations, innovative graphics, and intriguing quotes. Discover the most important theories of history's greatest scientists, why Copernicus's ideas were so contentious, how Einstein developed the concept general and special relativity, and the reasoning behind Crick and Watson's proposed structure for DNA, and much more besides. Fully revised and updated with eight brand-new pages of content, The Science Book is a truly accessible and comprehensive route into a fascinating subject. Packed with scientific quotations, profiles of key figures and discoveries, and flowcharts and infographics that explain the most significant concepts clearly and simply, it is perfect for anyone with an interest in any of the sciences.