The amount of planet-warming greenhouse gases in the atmosphere reached a record high in 2012, with rapid growth in both carbon dioxide and methane concentrations, according to a new report released Wednesday by the World Meteorological Organization (WMO). The report provides new insights into the extent to which human activities, combined with natural processes, have reshaped the makeup of the atmosphere since the dawn of the industrial revolution.
Greenhouse Gases Have Soared to Record Levels: WMO
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