Most of the world’s population is breathing polluted air, with only seven countries meeting World Health Organization (WHO) air quality standards last year, according to a new report.
Switzerland-based air quality monitoring database IQAir unveiled its findings on Tuesday, which draw on data from 40,000 air quality monitoring stations in 138 countries, finding that Chad, Bangladesh, Pakistan, India and the Democratic Republic of the Congo have the most polluted air in the world.
