These articles helps parents understand WHY teens are drawn to risky behavior, and what parents can do about it:
http://www.waytostopdrinking.com/way-to-stop-drinking/why-do-teenagers-take-risks.html
http://www.hindustantimes.com/Teens-naturally-inclined-to-risk-taking/Article1-747513.aspx
http://www.publicnewsservice.org/index.php?/content/article/32123-1