Nicotine isn't the only drug that e-cigarettes can deliver. A study of 3,847 Connecticut high school students found that 28% of e-cigarette users have used the device to vaporize marijuana. The new information will only add to the controversy about e-cigarettes, which deliver nicotine in a safer manner than traditional cigarettes, but at the risk of creating new (e-)smokers, and it turns out, diversion to include marijuana use. More