Wind can help fly a kite, power a sailboat or spread seeds. Around the world, the wind has become an increasingly popular and inexpensive source of energy that is converted into electricity. At the National Wind Technology Center in Colorado, scientists are working to advance wind power technology. The wind is often considered an environmentally friendly source of power. Wind doesn't pollute the environment and is a renewable source of energy that can't be used up like fossil fuels, such as coal, oil, and natural gas. Harnessing power from wind is nothing new. Some of the first windmills were used in Europe more than 5,000 years ago. Today, modern windmills, called turbines, resemble airplane propellers and are grouped in wind farms. As of 2011, 38 states have wind farms. Despite the benefits, wind power is far from perfect. What are the advantages and disadvantages of using wind power? Be sure to include examples to support your statements.