Former NASA climatologist James Hansen lobbed another grenade in what has become something of a war of words against Canadian politicians who support ...

CALGARY - TransCanada Corp. said Friday its controversial and long-delayed Keystone XL pipeline will take longer and cost more to bring into service t...

WASHINGTON - The powerful U.S. Environmental Protection Agency has once again rebuked the State Department over its positive environmental assessment ...

Canadians are less likely than Americans to support the Keystone XL pipeline, according to a new poll that comes out amid an unconfirmed report that P...

For a moment there, it looked like President Barack Obama had given the A-OK to the Keystone XL Pipeline. But it turned out to have been a misunder...

WASHINGTON - A new U.S. State Department report is the latest evidence that the long-delayed Keystone XL oil pipeline from Canada should be approved, ...

OKLAHOMA CITY -- While the debate continues over whether the United States will approve a proposed oil conduit from Canada to the Gulf Coast, the segm...

WASHINGTON (AP) — In a shift in strategy, the company that wants to build an oil pipeline from western Canada to Texas said Tuesday that the project...

I do not think Obama will impose a carbon tax. That would require Congressional consent. And he will never get that. But he will not kibosh the Keystone pipeline either. There are too many jobs on the line. If Obama nixed Keystone, he would lose the Senate.

President Barack Obama should approve the Keystone XL pipeline as part of his plan to reduce U.S. greenhouse emissions and combat climate change, the ...

The fate of TransCanada's controversial Keystone XL pipeline now rests with the U.S. State Department after Nebraska's governor gave his blessing to a...

WASHINGTON -- It's a decision President Barack Obama put off during the 2012 campaign, but now that he's won a second term, his next move on a propose...