"Wind Power" is the extraction of energy from the wind. Common techniques use a tower with a set of propeller blades that will spin when wind blows against them. Wind power is a renewable form of energy because wind is caused by the uneven heating of the earth by the sun. The lifespan of the sun is sufficiently large, measured in billions of years, that we are not worried about its demise, yet.

The earth's wind has an enormous amount of energy in it. If even a tiny fraction of it were harnessed, it would provide for the entire world's energy…

Read original blog post