
Until protesters made the pipeline a national issue, no one in Washington questioned that construction of the pipeline would be approved.

You're not the only one feeling pain at the pump this weekend. But the best way to keep fuel costs down isn't drilling.

The government could shut down over $1.6 billion in cuts to clean energy, part of a broader reluctance to fund clean energy.

A prolonged period of low or zero growth might present us with an opportunity to design a more sustainable and equitable world.

With all the political rhetoric flying, the basic facts about gas prices can get lost.

As prices continue to rise, some states will have a harder time adjusting than others.

Finding lessons in how green transit can survive and thrive in an unlikely place.

Nearly 20 percent of the global oil trade passes through its narrow waterway.

Congress is trying to force approval of the pipeline—again.

At this point, foreign oil accounts for roughly half of America's trade imbalance, and that's only going to get worse.

Americans' opinions on where the nation should get its fuel have shifted considerably.

Two new—but conflicting—reasons to oppose the project.

A look at the technological advances in extracting tar sands oil that could help mitigate environmental impact

Car-sharing services around the world are starting to embrace electric vehicles.

Even if the administration's strikes down the pipeline, however, it may not be enough to keep Canada's tar sands oil in the ground.