The Why Files The Why Files -- whyfiles.org

Shortages looming: Phosphorus, copper, rare metals
POSTED 11 SEPTEMBER 2008

Credits

Rufus Chaney
Agriculture Research Service, U.S. Department of Agriculture.

Dana Cordell,
Institute for Sustainable Futures, University of Technology, Sydney, Australia, and Department of Water and Environmental Studies, Linköping University, Sweden.

Stephen Jasinski,
U.S. Geological Survey.

John Tilton,
Department of Economics and Business, Colorado School of Mines.


Megan Anderson, project assistant; Terry Devitt, editor; S.V. Medaris, designer/illustrator; David Tenenbaum, feature writer; Amy Toburen, content development executive

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