Alternative Energy

These wind turbines were inspired by hummingbirds

Are tornadoes the future of energy?

15 things Obama has done for the environment

First wave energy station in U.S. generates power in Hawaii

Bionic leaf converts solar energy into liquid fuel

The Negawatt is ready for its close-up

This theater is heated with sewage (and no, it doesn't smell)

Africa gets its first people-powered soccer pitch

There's a picturesque town in the French Alps that generates cheese power

Fossil fuel defectors are embracing clean tech

Lamp powered by a single plant can stay lit for hours

The clean energy breakthroughs that Silicon Valley billionaires are betting on