Patrick J. Michaels is senior fellow in environmental studies at the Cato Institute and research professor of environmental sciences at the University of Virginia. The best way to garner headlines in the global warming game is to generate scary scenarios. While many people view climate change as some esoteric concern of environmentalists, they still raise their eyebrows when they hear a phrase like "global warming deaths." It's little surprise then that a recent article in Nature magazine has caught so much attention. Written by Jonathan Patz, an associate professor of environmental studies and population health sciences at the University of...