Vaping weed is popular, but there are many unknowns about its safety : NPR THC Vape Pens: Health Effects and Safety Insights Texas to ban sales of THC vapes starting Monday KUT Radio, Austin's NPR Station How to Vape Like A Pro: A Simple Guide for Beginners Have you heard of Third Hand Smoke , When most people think about the risks of smoking, they picture first or second hand smokethe smoke you inhale or breathe when someone lights up near you. But