Today's Video

'Non-smoking' doesn't mean smoke-free

Despite decades of indoor smoking bans and restrictions, new research from Drexel University suggests that the toxins we've been trying to keep out are still finding their way into the air inside. Findings by a group of environmental engineers show that third-hand smoke, the chemical residue from cigarette smoke that attaches to anything and anyone in the vicinity of a smoke cloud, can make its way into the air and circulate through buildings where no one is smoking. The study further clarifies our understanding of just how pervasive the toxic chemicals of cigarette smoke can be -- even in a "smoke-free" indoor environment.

Provided by Drexel University
Runtime: 3:35