The student who has thoughtfully examined opposing viewpoints on an issue should perceive what other position can be occupied on that issue and should learn to carefully consider antithetical viewpoints. The development of this critical approach is the purpose of this book. An introduction, postscript summary, and pro and con articles or published exerpts on each of 19 controversial issues are included. The issues are grouped under the following four headings: (1) "General Philosophical and Political Issues"; (2) "The Environment and Technology"; (3) "Disposing of Wastes"; and (4) "The Environment and the Future." (CW)