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A $2,500 billion sun umbrella?

14th Nov 2006, 15:11 GMT

A University of Arizona professor thinks he has a solution to protect us from the global warming effect. He wants to reduce the temperature on Earth by building a massive space sunshade made of -- hold your breath -- 20,000 billions of very small spacecraft weighing about a gram and orbiting a million miles above our heads. Links: Primidi, ZDNet

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