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"Uneven heating of the Earth's surface causes the wind to blow.
Since the seventh century, man has built windmills to grind flour and pump water.
From the windmills of yesterday, to the wind turbines of today, the wind has long been harnessed as an energy source. In fact, because it is a clean and renewable resource, the use of wind energy is increasing worldwide. In honor of Windmill Day (celebrat
Meet Vollis Simpson, who exploits the power of the wind to make art.
To convert wind to electricity, the blades of a wind turbine (a modern windmill) turn a shaft that is attached to a gear transmission box.
