If you cut the cigar too deep, you risk getting loose tobacco in your mouth, have bad smoke and you waste part of the cigar
If it becomes harder, more complicated and expensive to buy fags, plenty of young people probably wont bother which, considering the high risk of developing lung cancer, among many other health issues can only be a positive
They combined data from air particle monitoring with parental reports of in-home cannabis use to evaluate childrens exposure to SHCS
Cigarette butts are theoretically biodegradable (they are made of cellulose acetate) but it takes them just under 2 years to completely vanish (which is also debatable as nothing vanishes completely) and that is under perfect conditions
Pappata S, Dehaene S, Poline JB, Gregoire MC, Jobert A, Delforge J et al (2002)