Microsoft founder and philanthropist Bill Gates listens during a news conference in Texcoco

Reuters
Microsoft founder and philanthropist Bill Gates listens during a news conference in Texcoco
Microsoft founder and philanthropist Bill Gates listens alongside Mexican businessman Carlos Slim (not pictured) during a news conference after taking part in the inauguration of a new research facility at the International Maize and Wheat Improvement Center, or CIMMYT, in Texcoco outside Mexico City February 13, 2013. REUTERS/Henry Romero
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