Why we're fans: The former New York Times correspondent started Roadmonkey Adventure Philanthropy, which combines physically challenging expeditions with humanitarian efforts. Learn more about Roadmonkey
Feeling homesick for Iceland, Siggi Hilmarsson created an American success story.
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Learn about chocolate maker Shawn Askinosie and his teaching project, Cocoa Honors, which teaches high school students about business ethics.
In his latest book, activist John Prendergast looks back on a life-changing friendship.