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The last time there was this much carbon dioxide (CO2) in the Earth's atmosphere, modern humans didn't exist. Megatoothed sharks prowled the oceans, the world's seas were up to 100 feet...
America may be a bit of a mess when it comes to climate policy—though that mess has been surprisingly effective in reducing carbon emissions in recent years—but...
The year 2012 and now early 2013 have been an unending litany of bad climate news. After a record-breaking year of heat and drought in North America, and with devastating Superstorm...