Krupp, Fred. Earth, the sequel : the race to reinvent energy and stop global warming / by Fred Krupp and Miriam Horn. - New York : W. W. Norton & Co., 2008. - 296 p. ; 22 cm. ISBN: 9780393066906 Subjects--Topical Terms: Energy conservation --United States; Global warming. Dewey Class. No.: 621.042 KRU / 852