IMO it is absolute arrogance to think that man can cause global warming, Key word is GLOBAL!
For centuries man has attempted to make it rain result failure, man has attempted to stop every weather related disaster, result, failure. everything that causes the earth to heat produces the needed changes to cool the earth. everything that causes holes in the o-zone also produces the things that stop the holes, whales are trapped in the north atlantic from ice this year earlier than any other redcorded year, Last years cold temperatures entirely wiped away the last 100 years of heating so as a result no change in the climate temps. Snow is actually thicker in greenland, by the way why is greenland called greenland? Man tries to conserve forest by not allowing clearing or maintenance result failure. Every scare tactic used by either these fraudes or misguided people with good intentions has proved false starting with the first one I can remember, John Denver and his"by 2000, there will be no trees".
These are just my opinions that I will never change because no one can prove them wrong same as not one of these scientific pieces of evidence can hold up to any real scrutiny, which is why all these scientific experts refuse to debate anybody of significance