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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.

Jan 6: Senior Bharatiya Janata Party leader Subramanian Swamy on Sunday said the country's economy is not showing good signs though Prime Minister Narendra Modi has manifested tremendous leadership skills in fighting terror and in social welfare projects.

The fiscal decisions of the government have not yielded the desired results, the Rajya Sabha MP said here.

"Modi had shown tremendous leadership skill in fighting terror, in several social areas, micro areas like bringing toilets to every village home. But the economy is a complex system...," he said while taking part in a discussion.

While every minister is talking about a 5 trillion dollar economy by 2024, but the current GDP growth has to be multiplied in four years to achieve that, the former Union minister said.

He said, if wages are slashed as a measure to cope with the situation, labor will become cheap but that will also cut down the people's purchasing power triggering dip in demand, closing down factories and rise in unemployment.

"This is one problem for which you really need an economist," he said.

Swamy said in jest, "I think Modi has one problem with me. Not only I am an economist but also a politician."

Jan 18: Days after the arrest of Deputy SP Davinder Singh along with two Hizbul Mujahideen terrorists, Shiv Sena on Saturday questioned the role of police in the Kashmir Valley.

"Cross border infiltration is ongoing in Kashmir. But the police machinery is being used to help the terrorists in Kashmir to safely cross the border (to Pakistan) and a President's medal awarded Deputy SP was arrested for doing so. In Kashmir (it seems), the government is using the police for some other purposes, what will the country's Home Ministry say if somebody has a doubt in connection with the Pulwama attacks," Sena mouthpiece, Saamna, read.

This was in reference to the incident in which Jammu and Kashmir police intercepted a vehicle on Sunday and arrested DySP Davinder Singh along with two top Hizbul Mujahideen terrorists, who were travelling together.

The Sena mouthpiece asserted that the impact and acceptance of the Centre removing Article 370 should be visible "through the people" during the upcoming Republic Day celebrations.

"Jammu and Kashmir is now a Union Territory. It is being ruled by the Centre through President's Rule. The government had removed Article 370 in a historic decision...The joy and excitement in the people over the removal of 370 should be visible in the Republic Day celebrations this time. The tricolour should be seen flying over all houses in Kashmir, it is the least that can be expected," it added.

The Sena mouthpiece further said that with the arrest of terrorists in the recent days, it hoped that "Republic Day will be celebrated safely in Delhi, Jammu and Kashmir".