Fountain of Youth: The Under 30 Hall of Fame

Photograph Courtesy Paul Orfalea
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Paul Orfalea, Kinko's

Nicknamed "Kinko" because of his curly hair, he started Kinko’s in 1970 with a single copy machine, a converted taco stand, and a $5,000 loan. His idea to cater to college students worked -- 34 years later, the company sold for $2.4 billion.