Vaping weed is popular, but there are many unknowns about its safety : NPR Vape Weeds Is It Illegal in Pennsylvania to Use Vape Pens, Wax, or Oil Containing THC? Student in Possession of Three Vaping Devices Containing THC: On November 24, a school administrator at Henry E. Lackey High School became aware of a student in possession of a vaping device. Vaping Marijuana: What Are the Risks? Rehab Is Vaping Marijuana Safe? New York Center for Living Vaping Cannabis 101: Is it Different than Smoking? Silver Therapeutics