A changing climate is killing the sockeye salmon of the Columbia River.
Our old friend climate change played a bigger part.
A new report suggests that electric bill savings could be even more extreme than the EPA projects.
Construction begins on a new clean energy project off the coast of Rhode Island.
A new poll finds that swing-state voters are split along partisan lines -- of course.
We found a new planet that could support life. If not for ourselves, then for our hypothetical new friends: Let's clean this place up a little.
The Obama administration says sure, go for it. Hey, what could go wrong?
The Senate is moving toward restoring a key tax credit for the wind energy industry. But the House might not play along.
Sixty mayors from around the world gathered at the Vatican and got encouragement from Pope Francis for their plans to cut CO2 emissions.