How would an independent Scotland pay for its clean energy future?
China's push to wean itself from coal has triggered a rush to develop alternative power sources. Here's a look at its natural gas boom.
We're 20 years away from catastrophe, says PricewaterhouseCoopers.
The world's biggest polluter will set up a carbon market as early as 2016. Here's why that matters.
Even if we slash greenhouse gases immediately, the dangerous effects of global warming will continue for centuries to come.
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.