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Keystone Review Meaningless Without Climate Assessment

The U.S. environmental assessment of a new Keystone XL pipeline route from Canada will be meaningless unless it considers the effect mining of oil sands has on climate change, opponents of the project said.

The State Department may release within days the updated review of the path from Alberta to the Gulf Coast proposed by TransCanada Corp. President Barack Obama rejected a route that crossed an aquifer in Nebraska. Environmentalists say producing oil from Alberta’s tar sands releases more carbon dioxide than conventional drilling, worsening global warming.