Books, magazines, films and reports from industry and government to put industrial pollution into perspective. (Editor)

by a geometric method, a one-to-one correspondence is set up between the set of real numbers and the set of all points, except one, on a circle of unit diameter. Then some interesting results relating the corresponding points and real numbers are derived. (Author/CT)

Present knowledge about Mars is compared with past beliefs about the planet. Biological experiments that indicate life may exist on Mars are interpreted. Life patterns or biological features that might be postulated for extraterrestrial life are presented at the molecular, cellular, organism, and ecosystem levels. (DS)

Reviews evidence from molecular genetics and biochemistry, which supports the idea of some evolution, due to chance and selectively neutral mutations, occurring independently of natural selection. (AL)

Readings are organized for teachers by these topics: World War II; The Atomic Bomb; The Cold War; American Political Personalities; and, General Events in the United States. A 7-item list is presented for high school students. (DB)