So it's hard to think of an environmental issue which is less discriminating than air pollution. The World Health Organisation estimates that air pollution is responsible for up to seven million deaths each year. JUST WATCHED Can we win the fight against air pollution? Replay More Videos ... MUST WATCH Can we win the fight against air pollution? And that has been a real problem for air pollution in cities."

Source: CNN August 19, 2016 01:07 UTC