Featuring easy-to-read and -understand chronologies, biographies, glossary entries, and charts, measurements, and formulas, students, teachers, and general readers will consider these books primary one-stop resources for quick answers to frequently asked science questions. Among the topics covered are: acid rain, air pollution, Antarctic Circle, archoen eon, asteroids, barrier reefs, common rocks. Biographies include: Aristotle, Nicolas Copernicus, Charles Darwin, Rene Descartes, Galileo Galilei, Edwin Hubble, Sir Isaac Newton, Ptomely, Carl Sagan, Leonardo da Vinci. Tables, charts, and diagrams include: Beaufort wind scale, cloud chart, comparative oceans chart, dinosaur classification, geologic table, Ice Ages, major hurricanes, periodic table.