our planet is just going though its cycles... earth is just ever so slightly closer to the sun than a couple hundred years ago... people only talk about the ice ages but no one ever questions how we got from one to another...we went though hot periods too!!!! most notably the Jurassic period. why else would their be palm tree fossils in modern Alaska. all this global warming stuff is just panic about how we are STARTING to run out of fossil fuels but we have enough for another 100 years or so.