Wind power - an important source of energy In general, the reading and the lecture make a point that wind power has several benefits; however, the professor also discusses the disadvantages of using the wind power. According to the professor, there are two main disadvantages of it. Firstly, he claims that steel blades, which people became to use in the construction of windmills from 1870, kill a big number of birds each year. So, it is a serious problem in the United States, especially in California. Secondly, he states that a lack of density is also a problem, because it leads to decreasing the amount of wind-generated energy. According to the reading, wind power is clean and environmentally friendly energy recourse. It is an excellent alternative to electricity generated fossil fuels that have a harmful effect in the environment. The reading also discusses this point. Besides this, the professor also adds that wind energy does not produce carbon dioxide that is a major cause of the different kinds of pollution, such as smog and greenhouse effect.