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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NASA: Study Finds Ancient Warming Greened Antarctica

It seems Antarctica once had vegetation and had a lot of rain. This artist’s rendition created from a photograph of Antarctica shows what Antarctica possibly looked like during the middle Miocene epoch, based on pollen fossil data. Image credit: NASA/JPL-Caltech/Dr. Philip Bart, LSU  › Full image and caption PASADENA, Calif. — A new university-led study…

Claim: Today’s climate is more sensitive than that of the past

Press Release 12-107 Today’s Climate More Sensitive to Carbon Dioxide Than in Past 12 Million Years Geologic record shows evolution in Earth’s climate system The phytoplankton Emiliania huxleyi offers clues about climate past, present and future. Credit and Larger Version Until now, studies of Earth’s climate have documented a strong correlation between global climate and…

Shock news: mammals adapt to changing climate

From Brown University it seems we need a new variation on the popular bumper sticker: Over 65 million years North American mammal evolution has tracked with climate change Rise and fall of groups of fauna driven by temperature PROVIDENCE, R.I. — History often seems to happen in waves – fashion and musical tastes turn over…