Smoking: Even though it's known that tobacco is harmful to health and causes cancer, smokers don't quit the habit. But have ...

Vaping with nicotine has become commonplace. It can be used to stop smoking cigarettes, but it has several serious health risks. The long-term effects of vaping are unknown.

PHILADELPHIA (WPVI) -- A somewhat controversial smoking ban has gone into effect in Philadelphia. All city-funded residential drug and alcohol treatment programs are now tobacco-free. Some say it's ...