Bill McKibben — American Environmentalist born on December 30, 1960,
William Ernest "Bill" McKibben is an American environmentalist, author, and journalist who has written extensively on the impact of global warming. He is the Schumann Distinguished Scholar at Middlebury College and leader of the anti-carbon campaign group 350.org. He has authored a dozen books about the environment, including his first in 1989 about climate change... (wikipedia)