1 in every 8 deaths on earth are linked to air pollution, a study says.
Air pollution is now the second leading risk factor for death worldwide behind high blood pressure, and ahead of tobacco and poor diet.
Air pollution contributed to 8.1 million deaths worldwide in 2021. This is more than 1 in 8 deaths worldwide.
More than 90% of deaths related to air pollution come from exposure to ambient PM2.5 and household air pollution.