Air pollution is the deadliest form of pollution and the fourth highest factor for causing early death according to a new study by the World Bank. An estimated 5.5 million lives were lost in 2013 to diseases associated with outdoor and household air pollution. Diseases attributed to outdoor and indoor air pollution caused 1 in 10 deaths in 2013.
The financial cost air pollution is around US$5 trillion globally in 2013. In Europe air pollution costs around 5% of the gross domestic product (GDP). Added to this is the human factor of loosing friends and relations, and time spent ill and in hospital. There are also other factors that the study such as the costs of illnesses (e.g. hospital care, medication), reduced agricultural output, damage to ecosystems and cultural heritage that were not included.