The cause of the rupture and the total volume of oil released after the North Dakota spill remain unclear, officials said.

The Keystone pipeline system, which carries crude oil from Canada to the United States, was shut down on Tuesday morning ...

The Keystone Pipeline in North Dakota was shut down Tuesday after reports of a "bang" and spilled oil, according to officials ...

An employee on a pump station heard what was described as a mechanical bang early Tuesday morning, an official told CBS News.

The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow ...

Even planting just one keystone plant in the yard or in a container will help restore biodiversity on your property.

A portion of the Keystone Pipeline ruptured near Fort Ransom, North Dakota, around 7:44 a.m., according to local reports.

The Keystone oil pipeline was shut down Tuesday morning after a rupture in North Dakota halted the flow from Canada to U.S.

The 4300-kilometre Keystone Pipeline is operated by Calgary-based South Bow Corporation which announced on Wednesday that the ...

The Keystone oil pipeline from Canada to the United States was shut on Tuesday after an oil spill near Fort Ransom, North Dakota, its operator South Bow and the state's Department of Environmental ...

South Bow has shut down the Keystone Pipeline due to a leak in a portion of the tract passing through North Dakota. The Calgary, Alberta-based energy infrastructure company said Wednesday that the ...