Pollution has been linked to nine million deaths worldwide in 2015, a report in The Lancet has found.
Almost all of these deaths occurred in low- and middle-income countries, where pollution could account for up to a quarter of deaths. Bangladesh and Somalia were the worst affected.
Air pollution had the biggest impact, accounting for two-thirds of deaths from pollution.
Brunei and Sweden had the lowest numbers of pollution-related deaths.
Most of these deaths were caused by non-infectious diseases linked to pollution, such as heart disease, stroke and lung cancer.
- Source: BBC News