The green energy revolution is driven by inventors and entrepreneurs who are making saving the planet a viable and profitable venture. This Wide Angle on Green Energy looks at the different kinds of green power available, from what's going on in the lab to what's being installed in the field and how everyone can benefit.
Hamsters can seemingly run forever inside their little wheels, and scientists from Georgia Tech are finally helping them get somewhere. They've developed a way to harvest energy from the animal's body movement -- a technology that could be scaled up for humans.
Some companies hoodwink consumers into thinking their company's products and services are green, when they are not. Can you tell the difference?
Ten ways to build an environmentally friendly roof.
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