Research Roundup: E cigarettes companies hike advertising during COVID 19, smartphones detect drunk walks, scientists measure atmospheric gravity waves What's in an E Cigarette? American Lung Association A Review of Toxicity Mechanism Studies of Electronic Cigarettes on Respiratory System Viewpoint: Is vaping a pathway to tobacco addiction or quitting tobacco altogether? It depends Genetic Literacy Project Chemicals in vapes could be highly toxic when heated, research finds Vaping The Guardian