"Air-conditioning is not just a luxury. It’s a critical adaptation tool in a warming world, with the ability to save lives." But, "it also warms the world," says Michael Greenstone, the Milton Friedman Professor of Economics and Director of the Energy Policy Institute at the University of Chicago (EPIC), in the New York Times' The Upshot, highlighting an increasing global dilemma: the technology that can help protect people from climate change also accelerates its rate. The HFC agreement made in Kigali, Rwanda "accounts for the trade-offs that the world, especially today’s poorest countries, must make in confronting climate change while improving people’s lives." Read full article (registration may be required). (Photo by Wili Hybrid, used under Creative Commons Attribution-Share Alike 3.0 Unported license, courtesy Wikimedia Commons)

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