I have been listening to the Global Warming issue for many years. Yes, I am concerned, but I am having a real problem with where the blame is being placed. I am not a scientist, but I use logic, observation and reading to form some ideas that we should be talking about in the news. I have learned that since May 1, 2007, there have been approximately 22 volcanoes that have become active. Since Feb., 2006 approximately 83 volcanoes have become active and that there are more than 500 active volcanoes in the Pacific Ocean. NOW, my point is that all of this activity in and around the Pacific Ocean must be warming up the water temperature alot.  If you research the waming of the atmosphere and sea waters over the past years, look at the damaged that the gases, the destruction of land mass, animal habitat, etc. that these volcanoes must have had of the Earth. Which by the way sets off a chain of effects thoughout Mother Nature. To listen to some of the politicians (i.e. Al Gore), mankind is the blame for everthing. Mr. Gore and his friends should think before they start looking around to lay blame. I agree that man has done alot of things to help the situation, but I am sure Mother Nature has helped things along.