Here's some Climate Change History for you Liberals and I'm not even a scientist, But I did pay attention in school! Just 10 to 15,000 years ago there were ICE SHEETS all the way down to Missouri, some a mile in thickness. There were no factories, no machinery, no cars or trucks, no jets or trains, just Mother Nature and the rest of all life. Guess what, THAT ICE IS GONE! It melted, Imagine that! The Natural cycle of Earth and it's doing it again. If we took all the things above out of the equation, IT WOULD STILL be warming. Man warming the planet is like a flea on an Elephant, Get over it.