Alan Durning: Executive director and founder of Sightline Institute, has penned many popular blog series, including car-less living, bicycle neglect, and climate fairness. Prior to Sightline, Durning was a senior researcher at Worldwatch Institute, where he studied the human dimensions of sustainability and wrote the award-winning book How Much Is Enough? Read his full bio. Email: alan [at] sightline [dot] org.

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