The Bush administration has done nothing to address this horrific problem looming on the horizon. Instead they and their right wing sycophants have actively worked to obscure the science and mislead the public. Now that the science is overwhelming the politics, they still refuse to assume the mantle of leadership to address what we face not just as a nation, but a world community. We are all going to be paying a very deep price for this. This last year's hurricane season is only the beginning of the kind of climate instability that human activities have triggers. Its time to get on it.

Warming debate shifts to tipping point
Some scientists worry it’s too late to reverse climate change

By Juliet Eilperin
Updated: 11:31 p.m. ET Jan. 28, 2006

Now that most scientists agree human activity is causing Earth to warm, the central debate has shifted to whether climate change is progressing so rapidly that, within decades, humans may be helpless to slow or reverse the trend.

This "tipping point" scenario has begun to consume many prominent researchers in the United States and abroad, because the answer could determine how drastically countries need to reduce their greenhouse gas emissions in the coming years. While scientists remain uncertain when such a point might occur, many say it is urgent that policymakers cut global carbon dioxide emissions in half over the next 50 years or risk the triggering of changes that would be irreversible.

There are three specific events that these scientists describe as especially worrisome and potentially imminent, although the time frames are a matter of dispute: widespread coral bleaching that could damage the world's fisheries within three decades; dramatic sea level rise by the end of the century that would take tens of thousands of years to reverse; and, within 200 years, a shutdown of the ocean current that moderates temperatures in northern Europe.

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