This superbly illustrated Question & Answer book answers more than 70 questions to help you understand key subject areas. Discover if time and space are linked, what happens inside a power station, how fast radiation travels, plus many more exciting facts. Test your friends and impress them with your knowledge using the challenging quiz pages, and learn exciting new facts in the easy-to-use fact panels. Accurate illustrations and photographs create a visual factfinder packed with essential information on the science and technology that shapes our world.