In case anybody hasn't figured out, I am a conservative. However, a simple graph indicates an anomalous increase in temperatures coinciding with the industrialization. Since we can't predict weather 5 days in advance, there is no one model that can ever tell us conclusively that the global warming is or isn't a result of the emission of greenhouse gases. Before it became fashionable to climb aboard the global warming train, there were a few scientists as early as the 1970s, modeling and theorizing that this was occurring. While we cannot in practical terms eliminate fossil fuels immediately, there needs to be a long term energy plan, even if that means we risk flooding out most major coastal cities (from melting ice caps) to the point of massive population relocation, which will be extremely costly, and in the meantime, many deaths from increased flooding. It won't be my problem, since I'll be long gone. As for the cows, silly extremists haven't done the math to compare pre-European North America with its massive buffalo population.