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Politics : The Environmentalist Thread

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To: Ron who wrote (7256)	9/6/2006 10:10:06 AM
From: Thomas M.	Read Replies (1) of 36918

<<< ... "Ice cores reveal the Earth's natural climate rhythm over the last 800,000 years. When carbon dioxide changed there was always an accompanying climate change. Over the last 200 years human activity has increased carbon dioxide to well outside the natural range," explained Dr Wolff. The "scary thing", he added, was the rate of change now occurring in CO2 concentrations. In the core, the fastest increase seen was of the order of 30 parts per million (ppm) by volume over a period of roughly 1,000 years. "The last 30 ppm of increase has occurred in just 17 years. We really are in the situation where we don't have an analogue in our records," he said ... >>> news.bbc.co.uk Deep ice tells long climate story By Jonathan Amos

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