Lights out: could a powerful blast from the sun send us back to the stone age - discu.eu

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Lights out: could a powerful blast from the sun send us back to the stone age? http://www.theverge.com/2013/5/6/4304890/lights-out-why-the-us-government-is-worried-about-solar-storms 7 comments 6/5/2013 worldnews