![]() Antibiotic resistance and air pollution are each in their own right among the greatest threats to global health. More than 90 percent of the world’s population lives in areas where air pollution exceeds WHO limits.Īir pollution is linked to a number of illnesses including asthma, diabetes, and heart disease. An infographic from the Lancet Series on. (Al Jazeera) Air pollution’s health impactsĪccording to the WHO, some 7 million people die annually as a result of air pollution. However, as interest in the human health effects of environmental pollution has increased in the past few years, the number of papers on this subject in general medical journals has peaked and lately been. But questions remain over how efficient they really are. In the Lifeline of Jan 2,1 Harvard clinical epidemiologist Robert Fletcher gives his greatest fear as destruction of the good earth by toxins, nuclear waste, or simply too many people. The smog tower works within a one kilometre (0.6-mile) radius, supposedly cutting PM2.5 levels by 50 percent. The $2m 25-metre (82-foot) high tower’s 40 fans take in particle-laden air at 1,000 cubic metres (35,000 cubic feet) per second and pass it through filters. New Delhi installed two after an order by India’s Supreme Court – one is in a busy shopping area. Some Indian and Chinese cities have installed smog towers to try to tackle air pollution. Vehicle emissions, industry, and burning rubbish also contribute to high levels of PM2.5 and other pollutants. Stubble burning spikes pollution in autumn and winter. While replacing solid fuels with alternatives has lowered deaths linked to household air pollution since 1990, deaths related to ambient PMs have increased.įifteen of the 20 most polluted cities are in India, mostly in the north. In 2019, 1.67 million deaths in India were caused by air pollution, according to the Lancet. Hotan, in western China’s Xinjiang, had the worst average air quality in 2020, with 110.2. There have been abundant studies on the short-term effects of air pollution on health, with emphasis on mortality and hospital admissions. Nine out of the top 10 most polluted cities are in India. ![]() All these cities had a PM2.5 air-quality rating of more than 50. In 2020, India had 46 of the world’s 100 most polluted cities, followed by China (42), Pakistan (6), Bangladesh (4), Indonesia (1), and Thailand (1), according to air quality tracker IQAir. (Al Jazeera) The most polluted cities in the world PM2.5 levels lower than 12 are considered good, 55-150 unhealthy and 250 or above is hazardous. PMs vary in size, most damaging are PM2.5 and PM10 – with a diameter of less than 2.5 μm and 10μm respectively. Particulate matter (PM) comprises tiny particles that negatively impact health. Keep reading list of 4 items list 1 of 4 Mapping protests held in solidarity with Palestine list 2 of 4 How big is Israel’s military and how much funding does it get from the US? list 3 of 4 Israel-Gaza war in maps and charts: Live Tracker list 4 of 4 What’s fentanyl, and why have deaths due to drug overdose spiked in the US? end of list How is air quality measured?Īir quality is determined by the levels of air pollutants PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.
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