I found these earthquake stats interesting
Posted by CypressTX on 2/7/2010, 7:13 pm
http://www.ceri.memphis.edu/aware/follies.html

Description   Magnitude    Frequency per year
Great           8.0+          1
Major           7.0-7.9      18
Large           6.0-6.9      120
Moderate       5.0-5.9      1,000
Minor           4.0-4.0      6,000
Generally felt  3.0-3.9      49,000
Potentially
perceptible     2.0-2.9      300,000
Imperceptible   < 2.0        600,000+

Their home page: http://www.ceri.memphis.edu/index.shtml

I'll have to bookmark this site
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Major Solar Activity - JAC, 2/6/2010, 3:48 pm
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