Cannabis Smoke and Cancer: Assessing the Risk
Cannabis Smoke and Cancer: Assessing the Risk - NORML

Cannabis and tobacco smoke are not equally carcinogenic
http://www.pubmedcentral.nih.gov/art...?artid=1277837

Smoking Marijuana Does Not Cause Lung Cancer
US: Web: Study: Smoking Marijuana Does Not Cause Lung Cancer

Progression from marijuana use to daily smoking and nicotine dependence
Erowid.org: Erowid Reference 6951 : Progression from marijuana use to daily smoking and nicotine dependence in a national sample of U.S. adolescents : Timberlake DS, Haberstick BC, Hopfer CJ, Bricker J, Sakai JT, Lessem JM, Hewitt JK

High anxieties - What the WHO doesn't want you to know about cannabis
http://www.newscientist.com/article/...-cannabis.html

Radioactive tobacco
Radioactive tobacco

Granny:hippy: