December 8, 2016 9:06 am Youth Vaping Warning US Surgeon General Vivek Murthy warns e-cigarettes are a growing threat to the country’s young people. US & World Videos 10:45 ‘Giant Heart' procedure: The Lineup 0:16 Philadelphia police department combines 2 police districts. This is why 0:36 Franklin Institute's Giant Heart to close for months. Here's what will come next 0:16 Philly's Rocky statue getting a spring cleaning 1:47 New nationwide Xfinity ad features 3 Vietnam War vets as Military Appreciation Month begins