electronic cigarette. that means across the country almost 2 million of those students are smoking or using those electronic cigarettes. now, like a regular cigarette, these electronic cigarettes are a nicotine delivery system and instead of creating smoke, they create a vapor with a heated nicotine liquid. in our interview with dr. marc siegel said he s concerned these electronic cigarettes could be a gateway for young people to start using real cigarettes and effectively reducing that downward trend in smoking. if kids get hooked on nicotine because of e-cigarettes, that may make them life-long smokers, not just of e-cigarettes but traditional cigarettes and we know cigarettes are the number one cause of death in this country. anything that gets kids hooked on nicotine is a bad thing. reporter: unlike regular