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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 2: India on Tuesday reported 8,171 more COVID-19 cases and 204 deaths in the last 24 hours as the country's virus count inches closer to two lakh, according to the Union Ministry of Health and Family Welfare.

The total number of cases in the country now stands at 1,98,706 including 97,581 active cases, 95,527 cured/discharged/migrated and 5,598 deaths.

Cases in Maharashtra have crossed 70,000 including over 30,000 recovered while Tamil Nadu's COVID-19 tally jumped to 23,495.

New Delhi, Feb 4: Uttar Pradesh Chief Minister Yogi Adityanath on Monday accused Arvind Kejriwal of having a "partnership" with Pakistan and appealed to the people in Delhi to not vote for the AAP chief as it will make Pakistan happy.

Ramping up his attack on the Shaheen Bagh protest, Adityanath said that the protest against the Citizenship Amendment Act (CAA) is merely an excuse for people to vent their anger against the scrapping of Article 370.

"You must have seen their partnership on 370. Arvind Kejriwal used to speak in the same voice as Imran Khan on Article 370. You must have heard it.

"Now when elections are taking place in Delhi, who is speaking in favour of Arvind Kejriwal? It is the ministers of Pakistan. They are aware that Kejriwal is feeding 'biryani to protesters at Shaheen Bagh'," he said, referring to Pakistan minister Fawad Chaudhry's tweet asking Indians to defeat Prime Minister Narendra Modi.

Adityanath addressed three rallies on Monday in the national capital ahead of assembly elections.

"Will Pakistan decide who Indians should vote for. If voting for Kejriwal will make Pakistan happy, should it be done," he asked at a rally in Mehrauli.

Adityanath said his Delhi counterpart Kejriwal has become a "toy in the hands of anti-social and anti-India elements".

Addressing a rally in Vikaspuri in west Delhi, he said that Kejriwal is not bothered about key issues such as providing clean drinking water but is concerned about Shaheen Bagh, the anti-citizenship amendment act protest site.

At another rally in Uttam Nagar in west Delhi, Adityanath said Kejriwal has played with the emotions of the people of Delhi for the last five years.

"He obstructed the development of Delhi. And knowingly and unknowingly, he became a toy in the hands of anti-social and anti-India elements," Adityanath said.

The protest at Shaheen Bagh, he said, has disrupted traffic across the capital.

"A guest with an appointment to meet him at 9.30 am could only reach at 11. He told me he had left as early as 7 am but got stuck because of the traffic in Shaheen Bagh," he said.

The Uttar Pradesh chief minister also slammed Kejriwal for "sympathising" with elements who he said gave anti-India slogans in Jawaharlal Nehru University.