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After careful analysis of ice extracted from 3km below the surface in Antarctica, European scientists have concluded that carbon dioxide and methane, two greenhouse gases, are at their highest levels for 650,000 years. They say that the current global warming being experienced is exceptional and also suggest that sea levels may rise at twice the rate of previous centuries. The five year study has yielded gaseous samples dating back nearly 900,000 years. "We find that CO2 is about 30% higher than at any time, and methane 130% higher than at any time; and the rates of increase are absolutely exceptional: for CO2, 200 times faster than at any time in the last 650,000 years," said expert Thomas Stocker. Source: news.bbc.co.uk
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