It's a theory, and as usual political advantage can been leveraged.
Religious Theologians are shot down for stating such unproven " theories " even though they have ancient texts for their proof, and every ancient religion believes in life after death. Personally I haven't a clue as I have never died.
But since both sides use their " theories " I will take the practical approach of wanting proof, and therein lies the problem.
Those who have careers in this field will defend its exixstance, and then those who ask for proof from the other side of the coin are handed graphs and more theories which are unprovable.
I look at the bright side. Just bringing such scare tactics like subways flooding in NYC and Polar Bears floating on Ice which they have done for millenium as a way to conserve their energy while hunting, has succeeded in causing millions of Americans to take note and have actually taken steps towards conservation.
I chose this method a few years back after sucessfully conserving water.
Here in Las Vegas we were close to being rationed water. The citizens chose to be wise as we were on a 2 year probative period that would be forcefully enacted unless levels of consumption dropped 50%. Well Las Vegans wisely chose conservation over regulation.
I and thousands of others are riding bicycles up and down the strip and taking the Natural Gas Bus everywhere we possibly can.
I am proud to participate in this but to tax me and falsely claim that my taxes will change the Planets tempurature is just typical brainwashing from those that claim they know best.
If we really were the cause of anything making the weather unstable don't you think those who tell us we are going to kill the Planet would stop buying Private Jets and driving Limosuines..? Fuck these cock suckers.
AL Gore scared my parents to death with his nonsense and pictures of my parents property in Florida washing away. Then once he scared folks into investing for his cause he buys a 9 million dollar beach house...............No fear whatsoever of the rising tidal movies he produced.
So I shall continue conserving energy because as Braincell will agree with, Conservatism is great..................

( Southern Racists and shit....).
I ride a bike 12 miles a day and am ready for the Palms swimming Pool parties. So much I will wear only jeans when I perfom outside. I lost 24 pounds since November 2008. I am 205 now and only 5 lbs heavier than I was in high school, and I feel great.
So thats' why I like conservation, not becasue of some suck ass politician like Al Snore. He can chew on my Rectal Bagworms.............