Weed vapes: What you need to know about marijuana vaporizers, vape pens and vaping CNET Vapes CTPHARMA Some vapes claiming to be cannabis contain 'synthetic cannabinoid' study UK news The Guardian Stores sell supplies for fake, maybe dangerous, cannabis vapes Los Angeles Times Illegal Cannabis Vape Carts Tested Positive for Poisonous Cyanide Business Insider Marijuana legalization: Vaping THC illnesses are strengthening the case for it Vox