Global investment in renewable energy powered to record $257 billion in 2011, according to UN report

Forget what you heard about clean tech being dead. A new report finds that investment in green technology is booming

In California, the answer is yes, says new study

Small gains in energy efficiency can create huge savings. So why isn't everyone doing it?

Why cutting carbon emissions is good for the economy

Steven Cohen on the shift to a clean economy

Agreements to bail out banks happen in days - but we still don't have a deal to bail out the planet

The top shifts in cooking and eating over the past year

The liberals' favorite conservative reverses stance on global warming, saying the science is "not enough" for U.S. action

Interactive map shows the clean energy jobs of today and tomorrow