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New Delhi, Jul 18: The Covid-19 lockdown-led reduction in air pollution levels across five Indian cities, including Delhi and Mumbai, may have prevented about 630 premature deaths, and saved USD 690 million in health costs in the country, according to a new study.

Scientists, including those from the University of Surrey in the UK, assessed the levels of harmful fine particulate matter (PM2.5) from vehicles and other sources in five Indian cities -- Delhi, Mumbai, Kolkata, Chennai and Hyderabad -- since the beginning of the lockdown period.

The study, published in the journal Sustainable Cities and Society, compared these lockdown PM2.5 figures from 25 March up until 11 May, with those from similar periods of the preceding five years, and found that the measure reduced pollution levels in all these places.

According to the scientists, during this period, the levels of these harmful air pollutants reduced by 10 per cent in Mumbai, and by up to 54 per cent in Delhi.

"The percentage reduction for the other cities ranged from 24 to 32 per cent, which was slightly smaller than the measured values for Delhi and Mumbai," the scientists noted in the study.

"While the reduction in PM2.5 pollution may not be surprising, the size of the reduction should make us all take notice of the impact we have been having on the planet," said Prashant Kumar, a co-author of the study from the University of Surrey.

The scientists said these reductions in PM2.5 were comparable to those reported in other cities across the world, such as in Austria's capital Vienna (60 per cent), and Shanghai (42 per cent) in China.

They also calculated the monetary value of the reduced mortality due to air pollution and found that the lowered levels of PM2.5 may have saved 630 people from premature death, and USD 690 million in health costs in India.

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According to the researchers, the present lockdown situation offers observational opportunities regarding potential control systems and regulations for improved urban air quality.

They said an integrated approach might help in understanding the overall impacts of Covid-19 lockdown-style interventions and support the implementation of relevant policy frameworks.

"This is an opportunity for us all to discuss and debate what the 'new normal' should look like - particularly when it comes to the quality of the air we breathe," Kumar said.

New Delhi, Jun 26: Petrol prices in the national capital have reached Rs 80.13 per litre on June 26, up by 21 paise from yesterday’s Rs 79.92 per litre; while diesel prices in Delhi also rose to Rs 80.19 per litre – up by 17 paise compared to yesterday’s Rs 80.02 per litre.

This is the 20th consecutive day that fuel prices have been hiked by oil marketing companies (OMCs). The hikes began from June 8 after a 83-day halt on revised pricing during the lockdown period.

The state government’s increased value-added tax (VAT) on diesel since May is causing the fuel’s prices to soar in Delhi. VAT was increased to 30 percent for both petrol and diesel from 27 percent and 16.75 percent, respectively.

Coupled with the Centre’s hiked excise duty of Rs 3 per litre since March 14 and then Rs 10 per litre on petrol and Rs 13 per litre on diesel since May 5 has affected prices.

The hike on diesel prices is unusual, as the government traditionally keeps the price for the fuel low due to its impact on agriculture and other high consumption economic activities.