Measuring the Al Gore Effect

He's not your average comeback kid. As the star of last year's An Inconvenient Truth, Al Gore turned a wonky PowerPoint presentation on global warming into the third-highest-grossing documentary of all time; it has earned some $45 million so far. With the film up for two Oscars this month and Gore a nominee for this year's Nobel Peace Prize for mobilizing a worldwide crusade, the Al juggernaut just keeps picking up steam.

FOOT SOLDIERS He has trained nearly 1,000 roving volunteers to give the presentation shown in the film. All the disciples, including Cameron Diaz, pledged to give 10 talks a year.

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