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
Human impact on the Earth's climate? »Human impact on the Earth's climate?
Case for significant anthropogenic forcing remains unclear »Case for significant anthropogenic forcing remains unclear
Increase in CO2 has always followed not led rises in temperature »Increase in CO2 has always followed not led rises in temperature
Largely true but irrelevant as situation quite different now
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