The U.N. health agency says nearly everybody in the world breathes air that doesn’t meet its standards for air quality.
Particulate matter has many sources, such as transportation, power plants, agriculture, the burning of waste and industry – as well as from natural sources like desert dust. The developing world is particularly hard hit: India had high levels of PM10, while China showed high levels of PM2.5, the database showed.
The findings highlight the sheer scale of the changes needed to combat air pollution, said Anumita Roychowdhury, an air pollution expert at Center for Science and Environment, a research organization in New Delhi. The Council on Energy, Environment and Water, a New Delhi-based think tank, found that more than 60% of India’s PM2.5 loads are from households and industries. Tanushree Ganguly, who heads the council’s program on air quality, called for action toward reducing emissions from industries, automobiles, biomass burning and domestic energy.
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