Major new paleoclimatology study shows global warming has upended 6,500 years of cooling

Over the past 150 years, global warming has more than undone the global cooling that occurred over the past six millennia, according to a major new study. The findings show that the millennial-scale global cooling began approximately 6,500 years ago when the long-term average global temperature topped out at around 0.7°C warmer than the mid-19th century.

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