![Popular Science Radio show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/031/052/small/popular-science-radio.png)
Summary: Are e-cigarettes safe? Nearly 20% of US adults report that they have "vaped" in the past 30 days. Director of Tobacco Treatment Service at the University of Pittsburg Medical Center, Dr. Hillary Trindale, puts a spotlight on the popular device.