CO2 and Methane Emissions Continued Rise in 2008 Despite Economic Slump
Green Car Congress
APRIL 24, 2009
million tons of methane in the atmosphere at the end of December 2008. Total global concentrations topped 386 ppm, compared to 280 ppm before the industrial revolution began in the 1800s. Emerging from that natural variability is a consistent upward trend produced by burning coal, oil, and gas for transportation and industry.
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