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城市空气污染

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The Indian capital of New Delhi recently passed Beijing, China, for having the world's most polluted air. Now, Indian Prime Minister Narendra Modi is starting a national air quality index to monitor pollution levels in 10 of the country's major cities.

Mr. Modi started the air quality index at a two-day conference that included the environment and forest ministers from all Indian states. Officials at the conference are considering measures to strengthen environmental laws. Over the next two years, the index will be expanded to about 66 cities with a population of more than one million.

The new air pollution index will measure eight pollutants. The index will use color coding to describe the air's influence on human health. That will make it easy for citizens in big cities like New Delhi, Bangalore and Chennai to know their city's air quality.

Mr. Modi said that India has a long tradition of respecting the environment and can show the rest of the world the way in fighting climate change. He also urged Indians to reduce waste and save resources as they become more wealthy.

The high levels of air pollution in Indian cities are a major concern for residents(居民). The World Health Organization says that 13 of the world's 20 most polluted cities are in India. The worst is Delhi. Indian officials do not agree with the WHO's findings. However,pollutants in Delhi's air in winter months can reach up to three times the safe , experts say that’s the limits on some days.

Doctors have warned that rising levels of air pollution are leading to an increased number of citizens with many diseases. About 620,000 people die of pollution-related diseases every year.

Ms. Roychowdhury also says the new index could make it easier for governments to demand difficult measures, such as restrictions on private vehicles.


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