Thang Dinh Tran's passion for all things Vietnamese has combined with his passion for old maps, placing him at the center of a territorial dispute between Vietnam and China.
Rodney Jackson and his team take 20 to 30 yaks, each loaded with 250 to 300 pounds of gear, into the Himalayas to study snow leopards, which take the word 'elusive' to an extreme.
The SOLD Project helps young girls in Thailand avoid becoming prostitutes through mentoring and education.
Randy Grim, a passionate dog lover, and thousands of his Stray Rescue volunteers rehabilitate stray dogs in St. Louis and place them in loving homes.
Citizen Schools helps level the playing field for students who grow up in low-income households by extending and enriching the school day with hands-on projects and citizen mentors.
Estela de Carlotto heads the Grandmothers of Plaza de Mayo, who seek to reunite children taken from their mothers during Argentina's military dictatorship with their real families.
By restoring buildings and activity to a historic St. Louis neighborhood Joe Edwards has become a powerful force for civic good.
His two-wheeled creation, a $20 bike made out of cardboard, could revolutionize bicycling, especially in the developing world.
The Corner Project assists families with relatives in the US, ensuring, for example, that children of migrant workers born in the US are able to register for school or other services in Mexico.
Serving nutritious food, following ecological principles, and helping his community in Vermont make George Schenk a businessman with a social conscience.
Ruben Garcia founded Annunciation House in El Paso, Texas, which aids immigrants fleeing violence in Mexico and Central America.
Using his laptop, Kebedom Mengistu publishes Hadush Zemen (New Century), a newspaper for refugees from Eritrea who've survived the perilous trip and settled in Israel.
John Bergmann manages Popcorn Park, a special zoo in New Jersey that gives a home to distressed wildlife and exotic and domesticated animals.
'We know the answer to what it takes to save' polar bears, says environmental prize winner Steven Amstrup, who has gone to the Arctic to study the bears for 30 years.
When she found herself suddenly wealthy, the Indian philanthropist founded Pratham Books, a nonprofit publisher that uses innovative ways to put low-cost books in the hands of millions of kids.
Sweet Beginnings, a growing business on Chicago's West Side, provides just released prisoners with job experience making honey and other products.
The New York City native quietly champions legal reforms in Southeast Asia, a region where the rule of law is often weak and governments are criticized for their human rights records.
A retired salesperson saw how the act of knitting, and a supportive environment, could calm inmates and even help them give back to society.
She started One Simple Wish in her home to help people grant 'wishes' to kids in foster care.
The secondary school principal helps her students not only excel in science and technology, but become respectful, mature young adults.
On northern California's spectacular coast a free camp for low-income children provides hands-on science education and team building – along with 'nonstop fun.'
Roberto Bosch's volleyball school was getting nowhere. Then he invited kids from the slums to join for free.
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.
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