Paper: ‘Summer temperatures were about 10°C warmer than today, even though the concentration of atmospheric CO2 was similar’

From AAAS: From Russia with Lovely Data Climate and the atmospheric concentration of CO2 are closely linked. Brigham-Grette et al. (p. 1421, published online 9 May) present data from Lake El’gygytgyn, in northeast Arctic Russia, that shows how climate varied between 3.6 and 2.2 million years ago, an important interval in the global cooling trend…

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Claim: Fates of polar ice sheets appear to be linked

From the National Science Foundation – Press Release 12-115 Remote Siberian Lake Holds Clues to Arctic–and Antarctic–Climate Change Keys to climate change lie buried beneath “Lake E” in the Russian Arctic. Credit and Larger Version Intense warm climate intervals–warmer than scientists thought possible–have occurred in the Arctic over the past 2.8 million years. That result…