A STICKY HISTORY: Consider the bumper sticker, that easy-to-apply accessory that gives others a glimpse into the vehicle owner's personality, tastes, hobbies, political affiliation or sense of humor.

People have been putting bumper stickers on their cars since the 1940s, when a Kansas City screen printer named Forrest P. Gill invented them. Gill got his hands on some adhesive-backed paper and ...

Well, according to the experts we talked to, including three current and former law enforcement professionals and a professor of sociology and criminology, your bumper stickers might be revealing more ...