Study: Keystone Carbon Pollution Greater Than First Estimated

WASHINGTON (August 10, 2014) A new study concludes that the controversial Keystone XL pipeline could produce four times more global warming pollution than the U.S. State Department calculated earlier this year.

The proposed pipeline would carry oil from tar sands in western Canada to Texas.

The researchers estimate it would increase world carbon by as much as 121 million tons a year, compared with the department's estimate of 30 million tons.

The study’s lead author, Peter Erickson, said the government calculations didn't take into account that the added oil from the pipeline would drop prices, which would spur consumption, which in turn would mean more pollution.

The study was published Sunday by the journal Nature Climate Change.

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