How my portable wind turbine compares to solar panels - 2 years of testing later ...

Add Yahoo as a preferred source to see more of our stories on Google. Wind power has been an exciting source of renewable energy for decades. Now, German engineers have created a lightweight rotor ...

Harnessing the wind is not a new idea. Picture any pioneer-era farm on the Great Plains, and you'll likely find a windmill used to pump groundwater to irrigate crops. Hundreds of American companies ...