Climate Skeptic: Arctic and Greenland Ice

Its hard to fully correlate recent activity with Arctic temperatures. In fact, in the last three or four years (see above) we have seen decreasing Arctic temperatures, not increasing ones. But never-the-less, this ice picture is often used as exhibit #1 to prove anthropogenic warming. The "tipping point is near" cry supporters of the theory that Earth's climate, unlike nearly every other long-term stable natural system, is dominated by positive feedback (and ignoring anecdotal evidence that the Arctic experienced similar melting in the 1930s).