• Frontline today won a George Polk Award for “League of Denial,” its investigation of the NFL’s efforts to downplay evidence linking head injuries of football players to long-term brain disorders. The nonprofit newsroom Center for Public Integrity also won a Polk for “After the Meltdown,” which explored the aftermath of economic crash caused by sub-prime mortgage lenders. A full list of Polk winners, presented by Long Island University, is here. • While CPB Ombudsman Joel Kaplan agrees with WNET’s decision to return a $3.5 million grant for its series reporting on public pensions, he remains troubled by “the lack of transparency by both WNET and PBS” in handling the controversy. He suggests the original agreement between WNET and the Laura and John Arnold Foundation needs to be disclosed.