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Commonly known alternative energy sources include hydroelectric energy, solar energy, wind energy, biomass energy, geothermal energy, and tidal power. According to the U.S. Energy Administration, alternative fuel vehicles have decreased since 2003, however, buses utilizing alternative fuel have steadily increased since that time: from 9,000 in 2003 to 12,000 today. This accessible and timely edition examines the problems caused by the use of traditional fossil fuels and looks at alternatives such wind, solar, and nuclear energy. Its visually appealing presentation and compelling examples provide context and prompt readers to think critically about the future of alternative energy.