Teens today are more reluctant to smoke cigarettes than their counterparts nearly three decades ago, according to a study released this summer. But parents should hold their collective sigh of relief. The study, carried out by the Centers for Disease Control and Prevention (CDC), uncovered a new, troublesome trend: vaping. "We don't want youth to use devices and become addicted. That's my concern. The addiction to nicotine and conversion to cigarettes," says Roy S. Herbst, [...]