The battle is far from over — and has already transformed the way environmental campaigns are waged.

These ad hoc courts are a main reason why so many politicians and activists are against trade agreements like the TPP.

The White House says the president will veto the controversial pipeline. But could pressure from Big Oil lead him to change his mind?

New documents reveal TransCanada is planning an "oil route around Obama."

Bloomberg Businessweek reports that the project is riddled with shoddy workmanship.

The oil giant's bullying tactics are exposed in a new documentary.

The State Department's long-awaited environmental assessment of the Keystone XL pipeline is a disappointment for green groups like 350.org, who are now expected to step up their fight against the project.

The Southern leg of the controversial pipeline opened for business today, but landowners like Michael Bishop and others in its 485-mile path aren't happy about it.

The energy industry wants to use unmanned aerial vehicles to monitor pipelines.