thinking about one of the most powerful storms in centuries

NASA Science News for June 21, 2011

In Sept. 1859, on the eve of a below-average solar cycle, the sun
unleashed one of the most powerful storms in centuries. This week,
researchers and policy makers met in Washington DC to ask themselves,
What if it happens again?

FULL STORY at

http://science.nasa.gov/science-news...2jun_swef2011/