A customer walks in the Record Collector store in Sheffield, England, Friday. Hundreds of independent record stores are putting on special promotions for Saturday's Record Store Day. Oli Scarff/AFP/Getty Images hide caption

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Food companies can make safety evaluations of their products in secret without ever telling the Food and Drug Administration. Luciano Lozano/Ikon Images/Corbis hide caption

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"We need to fix our dysfunctional political system and get unaccounted money out of it, once and for all, even if that takes a constitutional amendment," Hillary Clinton said at Kirkwood Community College in Iowa Tuesday. Michael B. Thomas/AFP/Getty Images hide caption

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Liberian workers dismantle shelters in an Ebola treatment center in the Paynes Ville neighborhood of Monrovia. Doctors Without Borders closed the center last month because it was no longer needed. Zoom Dosso/AFP/Getty Images hide caption

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A woman cultivates seaweed off the coast of Madagascar to counter overfishing. She's working with Blue Ventures, a business that supports its conservation projects by giving ecotours. Courtesy of Skoll Foundation hide caption

itoggle caption Courtesy of Skoll Foundation