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38. Scott Harrison
Scott Harrison
Founder and CEO, Charity:water
Age: 36
Industry: Nonprofit

Scott Harrison, a former Manhattan nightclub promoter, has propelled his five-year-old group, Charity:water, into the national spotlight with astonishing speed. In its first year it raised $1 million. This year it is expected to bring in $26 million, for a grand total of $46 million that it says has helped bring clean water to 2 million people in developing countries. With a name-drop from President Obama and 1.4 million Twitter followers, Harrison says the charity's major obstacle now is finding the equipment to dig more wells faster.


Last updated October 25 2011: 5:11 PM ET
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