New York Times: An Environmental Protection Agency review of the Keystone XL pipeline emphasized that the recent drop in global oil prices might mean that construction of the pipeline could spur increased development of the Canadian oil sands and thus increase planet-warming greenhouse gas emissions. That review might influence President Obamas long-delayed verdict on the 1,179-mile pipeline, which could bring about 800,000 barrels of oil per day from Alberta to the Gulf Coast. Mr. Obama has said that an important...