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Scientists Baffled By Lack Of Sunspots.




Sunspots, Which Can Harm Electronics on Earth, Are Half the Number Expected-Researchers are puzzled. They can't tell if the lull is temporary or a decades-long decline, which might ease global warming a bit by altering the sun's brightness or the wavelengths of its light.Normally, the sun's magnetic north and south poles change polarity every 11 years or so. During a magnetic-field reversal, the sun's polar magnetic fields weaken, drop to zero, and then emerge again with the opposite polarity.

Read Full Story: http://online.wsj.com/news/articles/SB100014240527...

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