The following websites provide information and resources regarding the health effects of smoking, as well as second hand smoke:
Environmental Protection Agency (EPA)
  www.epa.gov/iaq/ets
NYC Department of Health and Mental Hygiene Bureau of Tobacco Conrtol:
  www.nyc.gov/html/doh/html/smoke/smoke.html
Center for Disease Control
  www.cdc.gov/tobacco
Other links:
  www.nototobacco.org
  www.thetruth.org
  www.tobaccofree.org
  www.tobaccofreekids.org