Revkin is, appropriately, ending his long and distinguished career as a daily reporter at the Copenhagen climate summit, which many view as the culmination of years of effort to draw attention to the threat of global warming. The meeting is not expected to produce a legally binding treaty to reduce global greenhouse-gas emissions, however. World leaders hope to strike such a deal in 2010, but whatever transpires, the political, economic, and scientific debates over man made climate change is bound to continue for years to come. Revkin will undoubtedly remain a strong influence in the field, and one can only hope that others journalists will continue to cover climate change as assiduously as he has.

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Cristine Russell is a CJR contributing editor and the president of the Council for the Advancement of Science Writing and a senior fellow at Harvard's Belfer Center for Science and International Affairs. She is a former Shorenstein Center fellow and Washington Post reporter.