July 10, 2019 3:50 pm The Meaning of the Shark Flags on Cape Cod Beaches Marianne Long from the Atlantic White Shark Conservancy explains what those purple and black shark flags represent on beaches. US & World Videos 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie 2:22 Scarlett Johansson and Colin Jost have date night at White House Correspondents' dinner 2:09 President of MIT calls for shutting down pro-Palestinian encampments 3:57 Pleasant Sunday despite morning showers 1:00 Three dead in apparent murder-suicide in Lowell