YouTube - Cambridge church bells ring for climate change

At 3:50 p.m. on the 350th day of the year, Harvard Square churches rang their church bells 350 times to bring awareness to global warming. Local churches have joined the campaign to set a global target of 350 parts per million carbon dioxide in the atmosphere. The current CO2 level is approximately at 387 ppm.

Melting Permafrost Scare Deflated by New Study

But a study led by Duane G. Froese of the University of Alberta concludes permafrost is far more resistant to climate change than previously claimed. The study, “Ancient Permafrost and a Future, Warmer Arctic” (Science, September 19, 2008), examines ancient ice, determined to be 740,000 years old, found in the Yukon. The permafrost has, indeed, remained “permanent” despite having experienced climate change—both warming and cooling—for hundreds of thousands of years.

Ice core samples, for example, show temperatures were repeatedly warmer in the Arctic during the past 740,000 years than they are today.