Carbon Dioxide

Global Carbon Emissions Reach Record High

Even though U.S. contribution is lowest since the '90s

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The world's energy-related carbon dioxide emissions rose 1.4 percent in 2012 to a record high of 31.6 billion tons, even though the U.S. posted its lowest emissions since the mid-1990s, the International Energy Agency said Monday.

In its annual World Energy Outlook report, the Paris-based IEA said top carbon polluter China had the largest emissions growth last year, up 300 million tons, or 3.8 percent, from 2011. Still, the increase was among the lowest seen in a decade as China continues to invest in renewable energy and energy efficiency.

U.S. emissions dropped 200 million tons, or 3.8 percent, in part due to a switch in power generation from coal to gas, while Europe's emissions declined by 50 million tons, or 1.4 percent, the IEA said.