Al Gore has been the leading advocate for confronting the threat of global warming. His pioneering efforts were outlined in his best-selling book Earth in the Balance: Ecology and the Human Spirit (1992). He led the Clinton-Gore Administration’s efforts to protect the environment in a way that also strengthens the economy. Mr. Gore is the author of An Inconvenient Truth, a best-selling book on the threat of and solutions to global warming, and the subject of the movie of the same title, which has already become one of the top documentary films in history. In 2007, An Inconvenient Truth was awarded two Academy Awards for Best Documentary Feature and Best Original Song.