Associated Press
In this June 18, 2012 photo, Juan Alonso speaks during an interview with at his solar-powered home in Pinar del Rio, Cuba. The Cuban farmer says solar energy has revolutionized the lives his family, who now have electrical lighting, a television and DVD player. "Just imagine, you toil all day in the field and then when you get home you have to grope around doing things with a gas lantern, with a torch to illuminate the patio at night," Alonso said, describing life during decades past.  (AP Photo/Franklin Reyes)

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