( CNN ) -- Millions of young people want to change the world . These three actually did it , and at `` CNN Heroes : An All-Star Tribute , '' they were honored for their efforts . Rachel Beckwith . For her 9th birthday , Rachel Beckwith asked that people donate to charity : water instead of buying her gifts . She wanted to raise $ 300 to help provide clean water for people in need . A little more than a month after her birthday , Rachel died after she was critically injured in a car accident . But after her death , her story of selflessness inspired thousands of people to give money to her cause . In all , Rachel 's campaign raised more than $ 1.25 million . Watch Rachel 's story . Rachel 's original campaign site . Donate now : Rachel 's mom carries on her legacy . Mikey Carraway . Mikey Carraway was diagnosed with liver failure when he was 11 . His life was saved , however , when he received a liver transplant from 18-year-old Johnny Hernandez . Hernandez was killed in a motorcycle accident . To honor Hernandez 's memory -- and to raise awareness about organ donation -- Mikey feeds the homeless through his organization , Mikey 's Meals . Watch Mikey 's story . Donate to Mikey 's Meals . Justin Churchman . Justin Churchman is helping change lives in Juarez , Mexico , one house at a time . Through Casas por Cristo , he was able to accomplish a remarkable goal : building 18 homes for people by his 18th birthday . Watch Justin 's story . Donate to Casas por Cristo .
10 youngsters were honored in December along with the top Three CNN Heroes of 2011 . Rachel Beckwith raised more than $ 1.25 million for clean water in developing countries . Mikey Carraway is feeding the homeless , raising awareness about organ donation . Rachel Beckwith builds homes for Mexican people who need shelter .