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Dale Lane
When hitting 400 is not good: Levels of key greenhouse gas pass milestone, trouble scientists - The Washington Post - http://www.washingtonpost.com/politic...
June 2, 2012
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RT @agentGav: In case you missed it, and a little reminder, that we're now passing 400ppm CO2 http://t.co/Om7UX6FM - "while Rome burns" ...
- Dale Lane