††††The wind can be very destructive. Strong winds can uproot trees and damage buildings. But the wind can also be put to work. Sailing ships and yachts have sailed around the world on wind power alone, while windmills have used the power of the wind for grinding corn and pumping water. Today, wind turbines, developed from windmills, are using the world's energy to generate electricity. Unlike oil and gas, the wind is one source of energy which does not pollute the air and will never run out. The disadvantage of wind power is that it is not predictable.
