There are a half million contaminated sites across 15 million acres in the United States, and a new initiative aims to spur clean energy development on as much of it as possible.

When asked what he would change immediately, if he could, President Obama talked about reforming energy policy to favor clean alternatives.

The patchwork, too-meager support for clean energy the US government offers right now is on track to dry up.

Pew Charitble Trusts has just released its assessment of clean energy investment for 2011, with the US pulling ahead of China to retake first place.

A new Gallup poll on American attitudes towards clean energy, climate action, and environmental regulation really illustrates the divide between the people and the politicians.

Clean energy has made some impressive headway in a number of U.S. states; these before and after maps tell the tale.

A solar photovoltaic panel shaped like a daisy blossom brings clean energy to your desk.

Government support for clean energy is crucial to getting off fossil fuels. But all too often it has unintended consequences.

Who are the best ambassadors for clean energy, energy industry innovators, activists, and more? Vote here.

Clean energy is trying to lead the way in Texas, but there are some roadblocks.