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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.

Dehradun, Jan 6: Universities are centres of learning and will not be allowed to become "addas" of politics, HRD Minister Ramesh Pokhriyal 'Nishank' has said.

The minister was replying to questions from reporters in Haldwani on Sunday about protests against the amended Citizenship Act across university campuses.

"Universities are centres of learning where the country's future is in the making. We cannot let them become addas of politics," Nishank said.

He accused the opposition parties of trying to turn the universities into hotbeds of politics.

The new legislation passed by Parliament aims to grant citizenship to persecuted religious minorities from Pakistan, Bangladesh and Afghanistan who had taken refuge in India and there is nothing wrong in it, the Union Minister said

"When Pakistan was created, the population of religious minorities there stood at 22 per cent. Today it is a minuscule 3.7 per cent. Persecuted on the basis of their religion, they sought sanctuary in India. The CAA is meant only to grant them citizenship," he said.

Terming the law humanitarian, the minister said it was going to make no difference to the status of Muslims in India and wondered why the Congress was making such a hue and cry about it.

Nishank's press conference in Haldwani was part of the BJP's campaign to create awareness in favour of the amended Citizenship Act.

Mumbai, May 27: The Maharashtra government on Tuesday ordered re investigation by the CID into the suicide of a 53-year-old interior designer and his mother, allegedly over non-payment of dues by TV journalist Arnab Goswami and two others.

State Home Minister Anil Deshmukh said he ordered re investigation after Adnya Naik, daughter of interior designer Anvay Naik, claimed that Alibag Police in neighbouring Raigad district did not probe the non-payment of dues which had driven her father and grandmother to suicide.

"Adnya Naik had complained to me that #AlibaugPolice had not investigated non-payment of dues from #ArnabGoswami's @republic which drove her entrepreneur father & grandmom to suicide in May 2018," Deshmukh tweeted.

"I've ordered a CID re-investigation of the case," the minister, an NCP leader, added.

He also used the hashtag "Maharashtra government cares" while sharing the tweet. Earlier this month, the police registered an abetment of suicide case against Republic TV editor-in-chief Goswami and two others.

The suicide note purportedly written by Anvay Naik, managing director of Concorde Designs Private Limited, said he was forced to take his life as he was not paid dues of Rs 5.40 crore by the three accused.

Republic TV denied the allegation and said that certain vested interest groups were running "a false and malicious campaign and making false statements and innuendos against the company by exploiting the tragic event".

Mumbai Police are also conducting a probe against Goswami over his statements about the Palghar lynching case of April this year.