Since 2005, Monique Pool has helped rescue, rehabilitate and return hundreds of sloths back to the rainforest in her native Suriname.
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Pool's home serves as a temporary sanctuary for the mammals.
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For 23 years, Dr. Jim Withers has been treating the homeless in Pittsburgh, Pennsylvania -- under bridges, in alleys and along riverbanks.
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Since 1992, he and his group have reached more than 10,000 individuals and helped more than 1,200 of them transition into housing.
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Kim Carter helps women and their children break the cycle of homelessness in San Bernardino, California.
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Since 2002, more than 800 women -- many who are formerly incarcerated -- have benefited from Carter's program.
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Rev. Richard Joyner is leading his rural community in North Carolina to better health.
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More than 80 young people help Joyner plan, plant and harvest nearly 50,000 pounds of fresh food a year.
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Sean Gobin, a former U.S. Marine, helps support fellow combat veterans as they "walk off the war" on the Appalachian Trail and other long-distance hikes throughout the country.
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Ranging from two to six months, these journeys give veterans a chance to connect with nature and work through their issues while enjoying the camaraderie and support of other war veterans.
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Bhagwati Agrawal and his nonprofit created a rainwater harvesting system that provides clean water to six villages -- more than 10,000 people -- in India's driest region.
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As a result, women no longer have to spend their days walking miles to fetch water. Girls can stay in school, and fewer people become sick.
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Jody Farley-Berens and her group support single moms in Arizona who are battling cancer.
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Her group provides housecleaning, meals and financial aid to more than 300 parents and their children.
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Rochelle Ripley and her nonprofit provide healthcare and education opportunities to the Lakota people in South Dakota.
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Her nonprofit has delivered an estimated $9 million in services and goods to people living on the Cheyenne River Sioux Reservation.
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Dr. Daniel Ivankovich is an orthopedic surgeon who treats patients in Chicago's troubled neighborhoods, regardless of their ability to pay.
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Today, his group runs three clinics in Chicago, and he performs more than 600 surgeries a year.
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After traveling in war-torn Nepal in 2006, Maggie Doyne changed her life's course to help children in the remote district of Surkhet.
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She and her group provide a home for nearly 50 children and a school that educates hundreds more.
