California's historic drought is forcing once-squeamish Californians to take a new look at “toilet-to-tap” water reuse.
Food giant General Mills now has some pretty sweet climate bragging rights.
Lisa Jackson on Apple's wide-ranging plan to green its act.
You've seen their logos on the sidelines, now get a peak inside the company trying to transform the world.
The latest addition to Australia's climate circus? Al Gore.
Even with the fracking boom, the U.S. is still tied to global oil markets.
The EPA is rolling out an ambitious plan to slash greenhouse gas emissions from power plants.
Never fight a land war in Asia -- unless the climate is on your side.
We don't need no stinking pipeline to spill oil everywhere -- we have trains for that!