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

itoggle caption Timothy A. Clary/AFP/Getty Images

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

itoggle caption Facundo Arrizabalaga/AFP/Getty Images

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

itoggle caption Kevork Djansezian/Getty Images

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

itoggle caption Stephen J Boitano/AP

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

itoggle caption Courtesy of the Climate Reality Project