6.6 billion people are on this planet and 1.3 billion are smokers, the International Union against Tuberculosis and Lung Disease (The Union) and the World Lung Foundation (WLF) told the 38th Union World Conference on Lung Health.
66 percent of all smokers live in just 15 countries, according to The Union and the WLF.
1.8 billion young people aged of 10 to 24 smoke cigarettes, according to the World Health Organization.
* More than 85 percent of these young smokers live in developing countries (WHO).
This works out to around 35billion cu ft of greenhouse gases every day.