Activists hold signs during a rally for paid sick leave at New York's City Hall last year. Mary Altaffer/AP hide caption

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Villages in the Lower Shire valley of Malawi, like this one named Jasi, rely heavily on subsistence farming and steady rainfall, and are struggling to produce steady harvests. Jennifer Ludden/NPR hide caption

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The U.S. Capitol dome provides a view down the National Mall, an area vulnerable to flooding. Karen Bleier/AFP/Getty Images hide caption

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Arinafe Makwiti, 13, says her parents forced her to drop out of school and get married to an older man last year to help with the family finances. Makwiti has divorced her husband, but now has a 9-month-old daughter. Jennifer Ludden/NPR hide caption

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Christina Asima says she had no choice but to marry last year at age 12 to help care for younger siblings after her mother abandoned the family. But she says her husband was abusive, so she left him, and now must look after her 8-month-old son, Praise, alone. Jennifer Ludden/NPR hide caption

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A Web-based adoption can hold great appeal for all sides. iStockphoto hide caption

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Losia Nyankale helps daughter Jonessa and son Juliean learn the alphabet. Nyankale, who works in a restaurant in Washington, D.C., says she needs food stamps and child-care subsidies to make ends meet. Jennifer Ludden/NPR hide caption

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Attorney General Eric Holder greets Alexis Margaret Herman, member of the Delta Sigma Theta sorority, before speaking at the organization's convention. Pablo Martinez Monsivais/AP hide caption

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Esteban Roncancio and other protesters call for executive action on workplace discrimination for LGBT Americans in Miami. Joe Raedle/Getty Images hide caption

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Dawn Heisey-Grove hands off Zane to Jonathan after a midday feeding. The couple were both working full time when Jonathan lost his job as a graphic designer two years ago. Kainaz Amaria/NPR hide caption

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Defense Attorney Judy Clarke has defended Arizona mass shooter Jared Loughner, Unabomber Ted Kaczynski and 9/11 conspirator Zacarias Moussaoui. Gregory Bull/AP hide caption

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Cy Maramangalam gives a presentation about climate change for the Alliance for Climate Education. Courtesy of Alliance for Climate Education hide caption

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First-time homeowner Amanda Cowley in her new home in the Bloomingdale neighborhood of Washington, D.C. After married couples, single women are the largest demographic group of homebuyers. Gabriella Demczuk /NPR hide caption

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For the first time, new nationwide science standards recommend teaching K-12 students about climate change. iStockphoto.com hide caption

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