The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow of thousands of gallons of crude oil from Canada to refineries in the U.S.

BISMARCK, N.D. (AP) — Trucks and workers started cleaning up the Keystone oil pipeline spill in rural North Dakota, though its cause and the project timing is unclear. The pipeline ruptured Tuesday ...

WASHINGTON—Rep. Henry Waxman's attempts to find out if a proposed controversial Canada-to-U.S. Gulf Coast oil sands pipeline will benefit Koch Industries appears to have hit a dead end. At least for ...