Man has everything to do with the belief that man SIGNIFICANTLY changes the Earth's climate.
IF you examine the following NOAA graph, you will see that actual temperature measurements show that the 1930's were the warmest temperatures since the late 1800's.
The CORRECTED tempertures (labeled adjusted) show that temperatures have been on a study increase since the 1930's.
That conflict between measured and corrected demands that the reason there is a difference between the blue and red lines be explained!
Although NOAA won't say this, the bases of adjusting tempertures is to make the temperature measurements consistent with CO2 increases, which as every school kid knows causes greenhouse temperture increases.
Yes, some people are stupid enough to believe in the globull warming scam. The temperature increases you hear about on the news are on ADJUSTED TEMPERATURES, NOT ON MEASURED TEMPERATURES!