A challenge from Native American and environmental groups successfully halted construction of the Keystone Pipeline, at least for now, with a Montana judge ruling in their favor late Thursday night.

FREEMAN, S.D. -- TransCanada officials are still searching for the cause of an oil slick discovered in southeast South Dakota that shut down a major pipeline. A team of about 100 workers assembled by ...

BILLINGS, Mont. (AP) — The sponsor of the Keystone XL crude oil pipeline pulled the plug on the contentious project Wednesday after Canadian officials failed to persuade President Joe Biden to reverse ...

TORONTO — Canadian Prime Minister Mark Carney raised the prospect of reviving the contentious Keystone XL pipeline project with U.S. President Donald Trump during his White House visit this week, a ...

BISMARCK, N.D. (AP) — A fatigue crack in the Keystone Pipeline led to an oil spill in North Dakota earlier this year that released thousands of barrels of oil onto farmland, according to the pipeline ...

Keystone offered a new route that got Heineman's approval, and the U.S. State Department indicated Friday that the pipeline was likely safer than other options for moving that oil sands crude. In the ...

The green group that worked to block the Keystone XL pipeline is cash-strapped and will “temporarily suspend programming” in the U.S. and other countries, according to Politico. 350.org protested the ...

FILE - This photo provided by the Bureau of Land Management shows the proposed route of the Keystone XL oil pipeline where it crosses into the United States from Canada in Phillips County, Mont., ...

WASHINGTON — The Keystone XL pipeline came up one vote short Tuesday in the U.S. Senate. If rebuffed, the company will pursue eminent domain to gain easements for the pipeline project. Citing a ...

TORONTO (AP) — Canadian Prime Minister Mark Carney raised the prospect of reviving the contentious Keystone XL pipeline project with U.S. President Donald Trump during his White House visit this week, ...