NEW DELHI – Some 223,000 people around the world died from lung cancer caused by exposure to air pollution and more than half of those deaths are believed to have been in China and elsewhere in East Asia. This is the recent report revealed by the World Health Organization (WHO).
Of the world’s top 20 polluted cities, 13 are in India compared. Air pollution slashes life expectancy by 3.2 years for the 660 million Indians who live in cities, including Delhi.
The Ganga and Yamuna are ranked among the world’s 10 most polluted rivers. Vapi in Gujarat and Sukinda in Odisha are among the 10 most environmentally-degraded zones in the world.
Air pollution in Delhi is caused mainly by industry and vehicular traffic, which has released high levels of particulate matter made up of various substances including carbon, nitrogen, sulphur and metal compounds. There are roughly 8.5 million registered vehicles in the city.
The report ranked cities after studying their air for the presence of harmful gases, such as nitrogen dioxide, carbon monoxide and sulphur dioxide, besides particulate matter 10 and 2.5.
Only three Chinese cities have been named among the top 20 most polluted ones and have just one polluted river.
According to statistics, Karachi (Pakistan) is ranked the fifth most polluted city of the world with Peshawar and Rawalpindi at sixth and seventh position.Indian cities of Patna, Gwaliar and Raipur makes the infamous list at second, third and fourth positions.
Iranian city Khurramabad is ranked eight, Indian city Ahmedabad is ranked at ninth while Indian city of Kolkata is ranked at tenth number.
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