"Further global warming of 1 °C defines a critical threshold. Beyond that we will likely see changes that make Earth a different planet than the one we know." So says Jim Hansen (say, didn't he create the Muppets?), director of NASA's Goddard Institute for Space Studies in New York. Hansen and colleagues have analysed global temperature records and found that surface temperatures have been increasing by an average of 0.2 °C every decade for the past 30 years. Warming is greatest in the high latitudes of the northern hemisphere, particularly in the sub-Arctic boreal forests of Siberia and North America. Here the melting of ice and snow is exposing darker surfaces that absorb more sunlight and increase warming, creating a positive feedback.
My Comment: What they don't tell you is that they've only studying the last 30 years and are drawing large assumptions without any further data - mostly guesswork but hey, they're in league with Al Gore (the guy that invented the internet, remember?). What they also don't tell you is that a majority of meteorologists do not agree with them at all. Further, Mr. Hansen (Mister, not Doctor?) has explained that he has no firm evidence or proof for any of this but he has stated that he "Feels this is true". What a flippin' idiot he is! And if you believe in this fruitcake, you're an idiot too!
