America's Energy Secretary, Steven Chu:
Another example of his unorthodox thinking is his observation that painting the roofs of buildings around the world white and using light-coloured road surfaces rather than blacktop would reflect a lot of sunlight back into space—possibly enough to have an effect on global warming as big as taking every car in the world off the road for a decade. There are plenty of scientists with such notions, but they are seldom in a position to convert their visions into reality. (The Economist, July 2, 2009)
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