Alpine mountain paths opened up as ice cleared
Alpine mountain paths opened up as ice cleared.
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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
Earth has been warmer in recent past prior to human impact »Earth has been warmer in recent past prior to human impact
Mediaeval warm period »Mediaeval warm period
Alpine mountain paths opened up as ice cleared
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