The mystery of why America continues to rely on foreign oil and contaminate its environment-and subsequently why the green industry holds the promise of becoming a $6 trillion market but remains speculative, volatile and fragmented-is answered in the intriguing book, "The Climate War: True Believers, Power Brokers and the Fight to Save the Earth" (Eric Pooley, Hyperion, 2010).

The U.S. has continued to shirk leadership on environmental issues, most notably at the Kyoto Protocol in 1997, when it argued that as long as India and China refuse to reduce their exponentially larger carbon emissions, there is no sense in America joining the 37 other industrialized nations in signing an agreement to protect the earth's climate.

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