The World's Biggest Marine Refuge: 442,000 Square Miles, 7,000 Species, 5 Sunken Aircraft Carriers

NEWS BRIEF With a stroke of a pen Friday, the Papahānaumokuākea Marine National Monument became as large as its name. President Obama added more than 442,000 square miles to the Pacific Ocean wildlife refuge north of Hawaii on Friday, quadrupling its size and cementing its status as the largest marine protected area on Earth.