National Geographic Footprint Readers: Alternative Energy + DVD

Description & Features of National Geographic Footprint Series: Welcome to the sights and sounds of the world with the Footprint Reading Library, a unique new series of graded readers for learners of English. This series offers fascinating stories from the four corners of our world, and develops the language and skills needed to understand non-fiction writing. * A rich selection of engaging non-fiction readers, grouped into five themes: Incredible Animals, Fascinating Places, Remarkable People, Exciting Activities, and Amazing Science. * One hundred individual readers, graded at eight levels from pre-intermediate to advanced, covering 800 to 3,000 headwords. * Each reader is available with a DVD-ROM containing both video and audio content for that reader. * Carefully-controlled grammar syllabus covers the most typically-taught structures in coursebooks. Alternative Energy: Global warming and the overuse of available traditional fuels have created an environmental crisis. In, Colorado, however, scientists in the windy Rocky Mountains have found alternative fuel sources that could provide a solution. What are these new sources of energy? How can they be used in everyday life?