Leo McCarthy's nonprofit, Mariah's Challenge, gives college scholarships to teenagers who pledge not to drink.
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Five years ago, Leo McCarthy lost his 14-year-old daughter, Mariah, when a drunken driver hit her and two of her friends as they walked down a sidewalk. Full story | Photos

Want to get involved? Check out the Mariah's Challenge website and see how to help.
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What sways teens not to drink and drive? Experts have found that it's personal stories, not stats, that really resonate. Full story