BusinessGreen: The concentration of greenhouse gases in the atmosphere reached a record high last year, according to the latest figures from the World Meteorological Organisation (WMO). The volume of CO2 reached 390.9 parts per million in 2011, after increasing by an average of two parts per million per year for the past decade. Fossil fuels are the major source for the 375 billion metric tonnes of CO2 released since the industrial era began in 1750, the WMO said. "These billions of tonnes of additional...
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