Is vaping really less dangerous than smoking?

The multicoloured, multiflavoured vaping products out there help entice teens to try their first-ever puff on an electronic cigarette. — AFP

Does vaping offer an opportunity for smokers to kick their deadly tobacco habit, or pose a vast new health threat to the world's young people?

This long-smouldering question has again come to the forefront in the run-up to a tobacco summit being held by the World Health Organization (WHO) tomorrow.