(CBS News) When it comes to legalizing medical marijuana, federal officials have argued recent increases in pot use among teens might be a result of better access to pot in states where it’s legal. A new study finds there is no evidence that legalization of medical marijuana increases teen drug use. Marijuana-smoking motorists twice as likely to crash cars More teens smoke pot than cigarettes, says CDC survey PICTURES: Medical marijuana: Which 17 states permit pot? Marijuana use among teens…
