Secondhand smoke -- smoke from the burning tobacco and exhalations of smokers, has been demonstrated to be a serious health hazard to people exposed to it. This pamphlet documents the risks, confirmed by more than 30 scientific studies.

It makes the important point that the hazards, though somewhat diminished by the banning of smoking in many public places, have not disappeared. The public smoking bans aren't universal, and there is no legal restriction on smoking in the home, where children -- the most vulnerable victims -- are most likely to be exposed.

For further research on this Group A carcinogen, readers are referred to In the Know Zone, Syndistar's free drug abuse information website.