Less than a year after Tim Pastore joined National Geographic Studios, the production arm of the National Geographic Society, the veteran producer is moving to the National Geographic Channel as President of Original Programming & Production. Pastore’s hire completes the overhaul at the top of the National Geographic Channel, which started in April when CEO David Lyle and president Howard Owens stepped down, and the network’s head of marketing, Courteney Monroe, was upped to CEO, with David Hill, Senior EVP of 21st Century Fox and a member of the National Geographic Channels Board of Directors, regaining oversight as Chairman of National Geographic Channels U.S.