Smoke Alarm - The Cannabis and Tobacco Education Initiative
  Cannabis and Tobacco Research Linksmore information
 
Substance use and the adolescent brain: A toxic combination.
Lubman et al

http://jop.sagepub.com/cgi/reprint/21/8/792

Marijuana and Chronic Obstructive Lung Disease: A population based study.
Tan et al

http://www.cmaj.ca/cgi/reprint/180/8/814

Does smoking Marijuana increase the risk of COPD?
Donald p Tashkin

http://www.cmaj.ca/cgi/reprint/180/8/797

Cannabis potent anti-depressant in low doses, worsens depression at high doses
Gobbi et al

http://www.sciencedaily.com/releases/2007/10/071023183937.htm