A Causality Problem for Milankovitch

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Science  23 Jun 2000:
Vol. 288, Issue 5474, pp. 2143-2144
DOI: 10.1126/science.288.5474.2143

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According to the Milankovitch theory, changes in the incident solar radiation, called insolation, in the Northern Hemisphere provide the driving force for global glacial cycles. In their Perspective, Karner and Muller discuss recent studies of corals from around the world that shed doubt on the applicability of the theory to the termination of the penultimate glaciation. The authors argue that a fresh, unbiased look at the data is warranted.