Apparently, health warnings alone are not preventing enough smokers from lighting up. Last week I heard an advertisement on the radio which constitutes a new strange direction in tobacco prevention. A group calling itself "Campus Invasion" sponsored the ad, which was cloaked in a promotional offer for a free laptop computer. However, instead of listing the health risks experienced by smokers and non-smokers alike, the ad sought to prevent tobacco consumption by focusing on child labor and the environment. This is a big switch. Anti-tobacco campaigns have taken many forms in recent years, from banning RJ Reynolds's Joe Camel...