Air pollution harms human health, affects food security, hinders economic development, contributes to climate change and degrades the environment upon which our very livelihoods depend.
Air pollutants know no political boundaries: emissions from sources in one country can be transported and deposited in neighbouring countries, sometimes even thousands of kilometres away.
For more information about air pollution and its relationship to various areas, see the publication of the United Nations Economic Commission for Europe (UNECE).