He sold his mansion, Porsche, and yacht and set off for Cambodia to provide food, shelter, and education to destitute children.
His Kindness Not Weakness outreach program challenges diverse audiences to show the kind of 'warrior' strength needed to practice nonviolence.
Hip-hop, graffiti, break dancing, and journalism programs give teens in Colombia a safe way to express themselves – and avoid violence.
Helmuth Caspar von Moltke, son of an anti-Nazi hero, uses the family estate in Poland to teach teenagers about democracy and protecting human rights.
Juvenile book author Walter Dean Myers writes stories troubled teens can identify with. He knows their world because he once was one of them.
Antônio Carlos Costa was happy as a pastor in suburban Rio de Janeiro. But violence in a city slum changed his life forever.
Pam Koner started a nonprofit group that helps families who want to aid less-fortunate families.
Sunita Narain has learned that being an environmentalist in India means being an advocate for the poor – and for immediate action.
Mao Zedong's Great Leap Forward campaign aimed to launch China into a Communist utopia. It ended in famine that killed tens of millions – a disaster that Beijing is still reluctant to acknowledge.
While living in Palm Springs, Calif., with retirement looming, Bill Morse chose to move to Cambodia to help activist Aki Ra rid the country of land mines that kill and maim.
When journalist Mae Azango wrote about a secret women's circumcision ritual in Liberia, she received death threats.
Pastor Jean Enock Joseph doesn't shy from Haiti's toughest problems. His message: Haitians have the ability to help themselves.
Mario Morino wrote a little book that's had a big effect – urging nonprofit groups to prove that they're really doing what they say they're doing.
Christo and Lanie de Klerk have founded the Baby Moses sanctuary for abandoned babies in South Africa.
Yevgenia Chirikova found out a national forest was quietly being sold off. What she did to try to save it may change Russia forever.
2012 Goldman Environmental Prize winner Ma Jun enlists ordinary Chinese to help clean up China's pollution.
Nina Olson is the National Taxpayer Advocate – the voice of the public at the IRS. She's trying to help you navigate the tax code you love to loathe.
When his school bus driver collapsed, 13-year-old Jeremy Wuitschick grabbed the steering wheel and pulled the keys from the ignition.
When victims go behind bars to talk with those who did them harm, they receive something the legal system doesn't provide: a chance to find real closure, maybe even forgiveness.
Osama Abu Ayyash visits Israeli classrooms, telling his story of loss and forbearance to humanize Palestinians to Israelis who may have never met one.
Eric Maddox created the Virtual Dinner Guest Project to bring people from different cultures together over a meal through a video link.
Dina Fesler went to Afghanistan to learn how to teach U.S. students about the country. Now she's opened a school there.
After losing her journalist son in Somalia, Kathy Eldon started a foundation that's touched the lives of millions.
Camila Batmanghelidjh founded Kids Company to help children – and now helps troubled teens. who often get little sympathy since the London riots.
Once a top investigative reporter in China, Deng Fei now writes a popular microblog that moves readers to action.