The sun is waking up from a long quiet spell. Last week it sent out the strongest flare for four years – and scientists are warning that earth should prepare for an intense electromagnetic storm that, in the worst case, could be a “global Katrina” costing the world economy $2,000bn.
http://www.ft.com/cms/s/0/67444b2c-3d13-11e0-bbff-00144feabdc0.html#axzz1EXyeFepl
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