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William D. Nordhaus, "A New Solution:  the Climate Club" (a review of Gernot Wagner and Martin L. Weitzman, Climate Shock:  The Economic Consequences of a Hotter Planet, Princeton University Press, 250 pp, $27.95), The New York Review of Books, vol. LXII, no. 10 (June 4, 2015), pp. 36–39.