Massive 'flood wave' moves along Texas' Guadalupe River

Now Playing Massive 'flood wave' moves along Texas' Guadalupe River 00:35 - UP NEXT Harvard researchers study how to communicate with whales 02:18 Gun violence erupts across U.S. on Fourth of July 01:20Elon Musk announces new political party 02:13Tropical Storm Chantal forms as Carolinas brace for…