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