There is ALWAYS a greenhouse effect taking place, be-it almost entirely due to water vapor, despite the fact that we've been in a cooling trend for the past 11-12 years. Without greenhouse gases, the planet would be freezing.Nice try, greenhouse gas and greenhouse effect is a term you global warming pinheads coined and for some reason you choose to keep using it.
We haven't always had greenhouses. What was the natural order of things called before anyone knew what a greenhouse was? Condensation and evaporation?
I somehow missed this strange response of yours. First of all, what in hades makes you think I believe in man-made global warming?? Are you new to this site? I merely stated the fact that greenhouses gases do exist. Earth's temps fluctuate over time for many different reasons, ALL of them natural. Natural greenhouse gases, almost entirely water vapor, plays a major role, as does solar activity, cloud cover, orbital deviations, ocean current cycles and volcanoes.