These nine socially conscious companies aren’t going up against the big boys—they are the big boys.

Years after we all thought Solyndra was gone. A new government report brings it back with a sort-of explanation.

Southern Company isn’t alone in spending billions to position itself for the natural gas future.

A little known Seattle startup could do for metal what 3D printing is doing for other materials like plastic.

The coal industry is on the outs.

The purchase comes at a time of transition, and a stock market lull, for the U.S. solar installer.

Pressed for profits and low prices, mining companies are turning to technology to revamp their operations and rethink their cost structures.

What’s he got to lose? The President embraces the ambitions of the energy entrepreneurs of Silicon Valley.