Alternative Energy / 
series editor, Rob Waring. 
 - Boston :  Heinle/Cengage Learning,  c2010 
 - 24 p. :  col. ill., col. map ;  21 cm +  1 video disc (sd., col. ; 4 3/4 in.) 
 - Footprint reading library. Amazing science .
 - Footprint readlng library.   Amazing science. .
<br/><br/> "The footprints reading library introduces sights and sounds from around the world with original video material developed by National Geographic Digital Media. These readers offer real-life stories in print, audio and video to develop English language skills" -- inside cover. 
<br/><br/> "Global warning 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?" 
<br/><br/><label>ISBN: </label>9781424012367 1424012368 9781424027040 (DVD) 1424027047 (DVD) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Readers.<br/>Renewable energy sources.<br/>Power resources.