The main idea of the passage "energy from the wind" is "how wind energy can be useful and helpful".
What is wind energy?
Wind energy is the the energy gotten from the wind. It is a renewable source of energy which does not cause pollution in the environment. Wind energy is cost efficient because you don't need to replace it from time to time unlike other sources of energy such as fossil fuels.
Wind energy is one of the oldest source of energy, it has been used by the Egyptians to sail ships and the people of the United States also used wind energy to pump water in their farms.
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