(BBC) Although smoking is becoming less popular in many parts of the world, the total number of smokers is growing, global figures reveal.
In 2012, 967 million people smoked every day compared with 721 million in 1980, data from 187 countries shows.
The rise is linked to population growth, researchers told JAMA.
With the Earth’s population having more than doubled in the last 50 years to seven billion, there are simply more people to take up the habit. Click here to read more.