Quote:
Originally Posted by will76
WHILE POLUTION IN PITTSBURGH HAS GONE DOWN, THE FACTORS THAT CAUSE CO2 AROUND THE WORLD HAVE GONE WAY UP.
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Curiously enough, between 1940 and 1970 CO2 was on the rise while temperature was falling. Is the CO2 today different from the CO2 back then? Is it possible there are other factors besides CO2?