#36, Marco,You have read into my statements things I did not say.1) I do agree there is a "so called greenhouse gas effect from water vapor, CO2, CH4 and some other gases (it has nothing to do with how greenhouses work, but is a back radiation warming from absorption and re-radiation).2) I do think man's burning of fossil fuels and deforestation probably are the main cause of the CO2 increase fro