The global warming issue may or may not be really going on. We simply do not have enough information to say for sure. Does it seem like the tempuratures in the USA are up? I say they are up, but we rarely hit recorded highs, or set new ones. I had a gentleman tell me last month that the global weather patterns are very similar to what we know of the ones in the 1930's and 40's. Known locally as the "Dust Bowl years".
The earths weather is still too complicated for us to completely understand yet. I can take 2 digital thermometers of the same make and manufacture and get a 1 or 2 degree difference in the exact same spot. So summarizing here, we know too little and have unreliable information to say anything for sure. The earth is billions of years old and we have been here 25 to 30 thousand. We know nothing of the earths ups and downs. There is CO2 levels trapped in ice at the polar caps. We look at this small amount of evidence and say we know for sure what was going on thousands of years ago. We may be right, but who can say? No one. If you believe that CO2 in mass in the atmosphere is what is causing a warm up on a global scale I say do something about it and PLANT TREES. This will not fix it today,but tomorrow might be better.