Grade 10 Up—The essays in these books were previously published in Scientific American between 2000 and 2003 (Earth), and between 2000 and 2004 (Physics). Earth examines the complex issues involved in the changing of the planet's environment. Problems relating to loss of species and habitats and melting of the Arctic ice sheet, and health issues resulting from global warming, are investigated. The complex analyses are intended for students with some advanced knowledge of the subject. In Physics, topics such as quantum teleportation, string theory, negative energy, and wormholes are explained. Since these fields develop so rapidly, both volumes are already somewhat dated. Also, the explanatory charts, graphics, and data are printed in small, light-gray type that is difficult to read.
