Stefani McCoy, seated in the center of the front row, was a high school dropout. After going back to school and completing her college degree, she joined the Peace Corps and went to Namibia to help fellow dropouts. Courtesy of Stefani McCoy hide caption

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Courtesy of Stefani McCoy

Former first lady Michelle Obama waves alongside school children while walking down the school lunchline after getting turkey tacos at Parklawn Elementary School in Alexandria, Va., in January 2012 to promote new nutritional guidelines for school lunches. Saul Loeb/AFP/Getty Images hide caption

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Saul Loeb/AFP/Getty Images

Alice Carter and granddaughter Sarah Wilson in Marrakech, Morocco. Carter is the oldest serving volunteer in the Peace Corps. Courtesy of Alice Carter hide caption

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Courtesy of Alice Carter

Peace Corps Volunteer Values Staying Active In Old Age

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You've got to get down — literally — when greeting someone in Northern Ghana. Kiley Shields for NPR hide caption

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Kiley Shields for NPR

Peace Corps volunteer Kiley Shields pronounces "n naa"

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The orchids that produce vanilla beans have no natural pollinators in Madagascar; the plant must be pollinated by hand — a labor-intensive process with little margin for error. Courtesy of Madécasse hide caption

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Courtesy of Madécasse