Mayo Clinic
Mayo Clinic: Secondhand Smoke
Use this site to learn why a "Burning cigarette is a health risk to everyone in the same room." This web-article describes the various hazards associated with secondhand smoke and includes information on its effect on children. Also,...
PBS
Pbs Online News Hour: Second Hand Smoke
Here, you can read an interview with Dr. Ichiro Kawachi, of the Harvard School of Public Health, who published a study concerning the effects of second-hand smoke on non-smokers. Included is a RealAudio version of this interview.