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The Natural Geochemistry of Our Environment shows that the Earth is a water world, whose water is transformed readily from the solid to the liquid to the gaseous state. This book, is an outgrowth of a report prepared in 1979 by Drs. Speidel and Agnew for the U.S. Science, Research, and Technology Subcommittee, provides just such a background to enables one to comprehend the natural system and the way that human activities affect that environment.

The United States depends on foreign sources for many strategic and essential minerals. Secure supplies of such minerals are crucial to the nation's economic and military well-being, but federal policies with regard to these minerals have continued to vacillate. This volume considers the minerals availability issue from a number of perspectives. In