"if the battery in a mechanical mod over-discharges and the device doesn't contain enough air holes to allow the battery to vent, there is a risk of explosion." http://lm360.us/Zeavala-son-of-Sundberg-from-Kuroganecho?Stakegran=236 .
air pollution in the united kingdom has been illegally high since 2010, leading to the premature deaths of 23,500 people each year, .
david dodick, md, neurologist, mayo clinic; chairman, american migraine foundation. . . .