Bill Gates, founder of Microsoft Corp., smiles during an American Energy Innovation Council news conference at the Newseum in Washington, D.C., U.S., on Thursday, June 10, 2010. General Electric Co.'s Jeffrey Immelt and Gates today called for the U.S. government to more than triple its spending on clean energy research and development to $16 billion a year. Photographer: Andrew Harrer/Bloomberg via Getty Images
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