The use of electronic cigarettes by US teenagers has dramatically risen this year, a new report says. The percentage of 12th grade students, typically aged 17-18, who reported vaping nicotine rose to 21% from 11% in 2017, a survey by the University of Michigan said….

For the first time, more than half of the UK’s electronic-cigarette users have since given up smoking tobacco, a study suggests. Some 1.5 million vapers are ex-smokers, compared with 1.3 million who still use tobacco, a survey of 12,000 adults for Action on Smoking and…