The News Corp. headquarters in New York City. Timothy A. Clary/AFP/Getty Images hide caption

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Copies of the book Julian Assange: The Unauthorized Autobiography lined the shelves of a store in central London on Thursday. Facundo Arrizabalaga/AFP/Getty Images hide caption

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Circulation figures for Johnson Publishing's flagship Ebony and Jet magazines are up substantially in recent months. NPR hide caption

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Republican presidential candidates debate in California on Sept. 7. NBC's Brian Williams says a moderator's persistence can reveal which questions candidates want to avoid. Kevork Djansezian/Getty Images hide caption

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The Rev. Al Sharpton is the host of MSNBC's PoliticsNation. Stephen J Boitano/AP hide caption

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Former Vice President Al Gore trains a group of presenters for the 24 Hours of Reality project. The online program will stream live online from 24 locations worldwide. Courtesy of the Climate Reality Project hide caption

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