An already relentless melting of the Arctic greatly accelerated this summer—a sign that some scientists worry could mean global warming has passed an ominous tipping point.
One scientist even speculated that summer sea ice could be gone in five years.
Just last year two top scientists surprised their colleagues by projecting that the Arctic sea ice was melting so rapidly that it could disappear entirely by the summer of 2040.
This week, after reviewing his own new data, NASA climate scientist Jay Zwally said: "At this rate, the Arctic Ocean could be nearly ice-free at the end of summer by 2012, much faster than previous predictions."
This sounds familiar.
Now, keep in mind he's speculating: he really doesn't know. It's possible, but who knows how likely it is. There's big error bars in our understanding still.
OTOH. If its true. Oh Shibbit with a blink tag.