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SW: *External Advisory Board, Earth Institute <ref>[http://www.earth.columbia.edu/articles/view/1006 Advisory Board], Earth Institute, accessed August 5, 2009.</ref>
*University Fellow, [[Resources for the Future]]
*Patron, [[Optimum Population Trust]]
*External Advisory Board, [[Earth Institute]] <ref>[http://www.earth.columbia.edu/articles/view/1006 Advisory Board], Earth Institute, accessed August 5, 2009.</ref>
==Resources and articles==
