A severe solar storm could cause economic damage many time larger than hurricane Katrina and the sun is 'waking up.'
'Sun Awakens': Scientists Warn of Solar Storms to Come
The sun is getting ready to ramp up its activity, and when it does we could be in for some real trouble, scientists say.
The sun's activity, which follows 11-year cycles, will experience its next peak in 2013. A solar storm of the strongest variety could cause 20 times more economic damage than Hurricane Katrina , said a 2008 National Academy of Sciences report on space weather.