Robots in the new movie "Surrogates" may seem like they live only in sci-fi. But similar robot technology is here or will be soon. Armies use remote-controlled robots to attack enemies. And emerging "telepresence" technology lets people see, hear, walk, talk and gesture using human-sized robots a world away.
China adds wind-power capacity
China, the world's biggest greenhouse gas emitter, aims to produce 8pct of its total energy with wind power within the next ten years.
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