In Hand: Lingering 'Third-Hand' Cigarette Smoke Endangers Children

The dangers of smoking tobacco have been well documented since the 1960s. For years, health experts have also warned about the dangers of second-hand smoke - breathing in other people's cigarette smoke. Now, some researchers are sounding the alarm over what they call "third-hand smoke." Third-hand smoke is the tobacco contamination that remains after a cigarette is extinguished. Dr. Jonathan Winic ...Hand