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10 facts about air pollution on World Environment Day

Reuters BARCELONA | Updated on June 05, 2019 Published on June 05, 2019

Nobody is safe from air pollution, the United Nations warned on World Environment Day, with nine out of 10 people on the planet now breathing polluted air.

This has led to a growing, global health crisis, which already causes about 7 million deaths per year, according to the World Health Organization (WHO).

Burning fossil fuels for power, transport and industry is a major contributor to air pollution as well as the main source of planet-warming carbon emissions - and tackling both problems together could bring substantial benefits for public health.

Here are some facts on the human impacts of air pollution and its links with climate change:

1. Air pollution kills 800 people every hour or 13 every minute, accounting for more than three times the amount of people who die from malaria, tuberculosis and AIDS combined each year.

2. Some of the same pollutants contribute to both climate change and local air pollution, including black carbon or soot - produced by inefficient combustion in sources like cookstoves and diesel engines - and methane.

3. The five main sources of air pollution are indoor burning of fossil fuels, wood and other biomass to cook, heat and light homes; industry, including power generation such as coal-fired plants and diesel generators; transport, especially vehicles with diesel engines; agriculture, including livestock, which produces methane and ammonia, rice paddies, which produce methane, and the burning of agricultural waste; and open waste burning and organic waste in landfills.

4. Household air pollution causes about 3.8 million premature deaths each year, the vast majority of them in the developing world, and about 60 per cent of those deaths are among women and children.

5. 93 per cent of children worldwide live in areas where air pollution exceeds WHO guidelines, with 600,000 children under 15 dying from respiratory tract infections in 2016.

6. Air pollution is responsible for 26 per cent of deaths from ischemic heart disease, 24 per cent of deaths from strokes, 43 per cent from chronic obstructive pulmonary disease and 29 per cent from lung cancer. In children, it is associated with low birth weight, asthma, childhood cancers, obesity, poor lung development and autism, among other health defects.

7. 97 per cent of cities in low- and middle-income countries with more than 100,000 inhabitants do not meet the WHO minimum air quality levels, and in high-income countries, 29 per cent of cities fall short of guidelines.

8. About 25 per cent of urban ambient air pollution from fine particulate matter is contributed by traffic, 20 per cent by domestic fuel burning and 15 per cent by industrial activities including electricity generation.

9. Keeping global warming “well below” 2 degrees Celsius (3.6F), as governments have pledged to do under the 2015 Paris Agreement, could save about a million lives a year by 2050 through reducing air pollution alone.

10. In the 15 countries that emit the most planet-warming gases, the cost of air pollution for public health is estimated at more than 4 per cent of GDP. In comparison, keeping warming to the Paris Agreement temperature limits would require investing about 1 per cent of global GDP.

Published on June 05, 2019

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