Science

Keystone XL pipeline

Upstream Oil and Gas ActivitiesJohn HoevenPetroleum IndustryTransCanada Corporation
Alex Pourbaix, left, TransCanada Corp.'s president for energy and oil pipelines, addresses North Dakota officials and oil industry representatives with Sen. John Hoeven, R-N.D., right, in Bismarck, N. D. TransCanada plans to propose a new route for the Keystone XL pipeline from Canada to the... AP Photo/James MacPherson
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