It is certainly not politically correct these days to question the validity of global warming and the role of green house gases, but I have to raise this one critical question. What percent of green house gases are man-made? Just because the majority of scientists agree on sometime doesn't make it so. Flat earth...sun orbiting around the earth!!

I don't remember the exact number but its EXTREMELY small. Remember, volcanoes produce more CO2 every year then all man made CO2 combined. CO2 also only makes up 0.03% to 0.06% of the total atmosphere.