Global warming deniers say this is a big problem. The data doesn't show it. Here is a visual way of looking at it .. sunspot number vs global temp for the past 130 years
(you may have to click on the image to start the animation)
And if the annimated gif doesn't work here is the last bit
via David MacKay
Note there are many sophisticated statistical methods that show no relation, but this gives a quick qualatative feeling - it is not a replacement for a deep statistical analysis.
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