The burn rings correspond to two different thicknesses in the paper, which serve to precisely control the speed at which the cigarette burns, slowing it automatically when the smoker is not ...

Some reckless teenagers are known to show off by burning themselves with a lit cigarette to supposedly demonstrate how brave and fearless they are. This senseless and dangerous practice ...

The major toxins in cigarettes, perhaps surprisingly, don't come from the chemicals that manufacturers add. "The carcinogens mostly come from the burning of tobacco," says Kenneth Warner, director, ...