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Bill Gifford is a contributing editor for Outside magazine and has written on science, sports, and fitness for numerous publications, including Wired, Businessweek, Men's Health, Men's Journal, Slate, and The New Republic, among other publications. He has been features editor of Men's Journal and executive editor of Philadelphia magazine. He is also the author of Ledyard: In Search of the First American Explorer. He lives in New York City and central Pennsylvania.