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Person
Paul Steely White
Paul Steely White is executive director of Transportation Alternatives, New York City's leading advocate for bicycling, walking, and public transportation.
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Person
Bill McKibben
Bill McKibben, a well known environmental author and activist, is the founder of 350.org, an international climate change campaign.
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Person
Mat McDermott
Mat McDermott is the business, politics, and energy editor for Discovery Communication's TreeHugger.com.
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Person
Louise Richardson
Louise Richardson is vice-chancellor of the University of Oxford. Richardson previosuly served as principal and vice-chancellor of the University of St Andrews.
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Person
Brian M. Till
Brian Michael Till is a medical student at the University of Vermont College of Medicine and a contributor for "The Atlantic."