Today, secondhand smoke is the third leading cause of preventable death in the United States, causing the deaths of 53,000 Americans each year * Viewers are offered information about two different kinds of secondhand smoke: mainstream smoke, which has been inhaled and filtered by the smoker's lungs, and sidestream smoke, which rises directly from the tip of a burning cigarette * Sidestream smoke is 20 time more toxic than mainstream smoke * Students learn that secondhand smoke can cause serious diseases such as asthma, bronchitis, emphysema, heart disease, pneumonia and cancer * The video includes helpful advice from teen advocates who encourage viewers to avoid situations where they will be exposed * Class activities in the Teacher's Resource Book allow students to expand their knowledge about the dangers of tobacco * Grades 7-12