Monday, September 14, 2009

An ill wind . . .

Third Roadsign Report from the institute

We sailed past yet another warning sign on our crash course towards irreversible climate change a few days ago.

As reported by the AP, two German-flagged cargo ships navigated the "northeast passage," powering their way from South Korea to Siberia (and on towards Rotterdam) via an arctic route that until now has always been blocked by ice.

Scientists cited in the AP story say that this is a clear indication of human-caused climate change, which has long been predicted to show up most dramatcally in Earth's arctic and antarctic regions.

It may be good news for shippers and other business interests who are eager to exploit the arctic, but it's not good news for the rest of us.

Earth's rapidly melting ice is thought to be one of the most likely triggers for irreversible climate change. Since ice reflects the sun's energy back into space, it helps to keep the planet cool. When ice is replaced with open ocean or terrain, solar energy is absorbed and retained. This sets up a feedback loop that melts more ice, which means more energy is absorbed--you get the idea.

At least, with President Obama rather than Bush in the White House, the U.S. is no longer actively blocking progress towards international agreements to fight climate change. However, the political will and skill to attack this enormous global problem still lag dangerously far behind the accelerating pace of global warming and climatic disruption.

Robert Adler
for the institute

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