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10 intriguing environmentalists

By: Sidney Stevens on Oct. 16, 2009, 11:23 p.m.

Photo: Svadilfari/Flickr

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Johnny Appleseed

Folk hero John Chapman just might be the great granddaddy of low-carbon living. This 19th-century vegetarian, nature-loving preacher and businessman traversed the Midwest on foot in secondhand clothes, planting apple nurseries with free seeds from cider mills. His mission: to help settlers build self-sustaining communities in harmony with nature. He often bartered and channeled a portion of profits toward rescuing horses from slaughter.