Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center CU Anschutz Study Shows Vaping Nicotine While Pregnant May Impact Fetal Development Smoking, vaping & pregnancy: in pictures Raising Children Network Why Vaping is Dangerous, Especially for Children with Asthma The National Environmental Education Foundation (NEEF)