Discover the story of science—and how it shaped our understanding of the world. Introducing the key aspects of science, this book covers all the crucial topics from atoms and evolution to explosive chemical reactions. See how medieval science led to the invention of gunpowder, find out how dinosaurs evolved, discover what lies inside an atom, and much, much more!  The classic nonfiction series Eyewitness Books provide an in-depth, comprehensive look at its subjects with a unique integration of words and pictures.