Largely true but irrelevant as situation quite different now
Largely true: but irrelevant as situation today's quite different. The extra CO2 in the atmosphere—35% increase over pre-industrial levels—is from human emissions. Levels are higher than have been seen in 650,000 years of ice-core records, and are possibly higher than any time since 3m years ago.
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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 remains unclear »Case for significant anthropogenic forcing remains unclear
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Increase in CO2 has always followed not led rises in temperature »Increase in CO2 has always followed not led rises in temperature
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Largely true but irrelevant as situation quite different now
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