What's the Harm in Vaping?

Vaping nicotine rather than smoking the drug is widely promoted as a safe way to wean off cigarettes, but the popular practice is exposing a new generation to risky substance use. Listen in as host William C. Moyers talks with President and CEO Joseph Lee, MD, about the difference between vaping and smoking, types of vaping devices used for nicotine and other drugs, and the harmful health effects of vaping—especially for teens.