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Geology
EPA chief concerned about gas drilling fluids
WASHINGTON (Reuters) - The Environmental Protection Agency chief Lisa Jackson said she was "very concerned" about the composition of fluids used to extract natural gas from shale deposits.
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(0)New Evidence Hints at Global Glaciation 716.5 Million Years Ago
Geologists have found evidence that sea ice extended to the equator 716.5 million years ago, bringing new precision to a "snowball Earth" event long suspected to have taken place around that time. (Harvard University press release)
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Salt-Seeking Satellite Shaken by Quake, But Not Stirred
NASA's Aquarius instrument, and the Argentinian spacecraft that will carry it into space, rode out the Feb. 27 Chilean earthquake without a scratch.
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