Quote:
Originally Posted by fdpaq0580
Show us the proof that no studies have been done. How much did man-made CO2 combined with the effects of all of mankind's worldwide activities and habitat distrution raise the overall average global temperature?
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Sorry. As is the legal system, one is innocent until proven guilty. Those who claim guilt -- such as 2nd hand smoke causes harm -- must produce the evidence. Otherwise, 2nd hand smoke is innocent -- by law.