The book covers not only the core sciences--physics, biology, and chemistry--but also Earth science and astronomy. Assuming no previous scientific knowledge, it covers more than 100 cornerstone ideas, ranging from photosynthesis to chemical reactions, the laws of motion, and the general theory of relativity. Pared-back entries each focus on a single concept and use a combination of clear text and simple graphics to explain it as directly and concisely as possible 160 pages hc