Providence Journal: In the annals of congressional oratory, it didnt rival Sen. Rand Pauls 13-hour filibuster in March over drone policy. But last Wednesday, U.S. Sen. Sheldon Whitehouse marked a major milestone of his own -- and one welcomed by environmentalists -- when he delivered his 50th weekly address on climate change from the Senate floor. Whitehouse gave his first Time to Wake Up address in April 2012. He has returned to the floor every week the Senate is in session to stand before C-Span cameras and shine...