CO2 levels haven't risen this rapidly at any time over 20m years
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Anthropogenic Climate Change »Anthropogenic Climate Change
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Human impact on the Earth's climate? »Human impact on the Earth's climate?
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Case for significant anthropogenic forcing is clear »Case for significant anthropogenic forcing is clear
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Scientific measurements provide strong supporting evidence »Scientific measurements provide strong supporting evidence
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CO2 levels haven't risen this rapidly at any time over 20m years
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CO2 levels risen from 280 to 387 ppm in last 200 years »CO2 levels risen from 280 to 387 ppm in last 200 years
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20 million year record of CO2 levels preserved in foraminifera »20 million year record of CO2 levels preserved in foraminifera
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