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industrial society

C02 Milestone Reached As Levels Hit 400 PPM Across Arctic

written by Yale Environment 360

For the first time in at least 800,000 years, atmospheric concentrations of carbon dioxide have crossed the threshold of 400 parts per million (ppm), with stations across the Arctic recording these record levels, the Associated Press reports.

Global concentrations have hit 395 ppm, but in

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June 1, 2012 0 comment
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