For the 21st century, the USGS and many others throughout government, academia, and the private sector carry a hopeful vision of better solutions to the problems of depleting natural resources and creating excessive wastes. For this effort, investigators are engaging in whole system views of the human condition using the tools of materials and energy flow accounting and industrial ecology.
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USGS Numbered Series
Materials and energy flows in the earth science century : summary of a workshop held by the USGS [in Reston] in November 1998
U.S. Dept. of the Interior, U.S. Geological Survey,