British endurance swimmer Lewis Pugh on Wednesday completed a 315-mile (500-kilometer) journey down New York’s Hudson River, highlighting its successful decades-long cleanup as a beacon for other waterways. “Fifty years ago, this was one of the most polluted rivers in the whole world,” said Pugh, 53, who was appointed the first UN patron of the oceans a decade ago. “We need to have clean, healthy rivers,” he told reporters after completing the unassisted trip from […]