Sunspots cause temperature changes

"If CO2 is of such critical importance to climate change why was
there a large temperature rise *prior* to the early 1940s when 80
percent of the human produced carbon dioxide was produced *after
World War II*? When CO2 levels finally began to increase dramatically
in the postwar years, why was there a concomitant interval of about
30 years of global *cooling*?" However, you may notice the positive correlation between solar activity and temperature. You 'may', depending on the degree to which you have been brainwashed by propenents of Man-induced global warming.

Article "The Geologic Record and Climate Change":

http://www.tcsdaily.com/article.aspx?id=010405M

direct link to this specific graph:

http://www.tcsdaily.com/images/Library/None/010405M4.gif

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The record of temperature change correlates many times better with
solar activity. Scientists have known this for a very long time, but
not knowing what mechanism could be behind it, put this observation
on the shelf.

Article "The Geologic Record and Climate Change":

http://www.tcsdaily.com/article.aspx?id=010405M

direct link to this specific graph:

http://www.tcsdaily.com/images/Library/None/010405M.gif

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Some studies have shown that cosmic ray influx correlates very well
with thick, low level, sunlight-reflecting clouds.(these types of
clouds cool the earth) eg, when solar activity increases, less of
these thick, low-level clouds form, more sunlight gets through and
the earth's surface warms *naturally*:

Article "The Geologic Record and Climate Change":

http://www.tcsdaily.com/article.aspx?id=010405M

direct link to this specific graph:

http://www.tcsdaily.com/images/Library/None/010405M5.gif