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Washington, Apr 23: Air pollution over northern India has plummeted to a 20-year-low for this time of the year, according to satellite data published by US space agency National Aeronautics and Space Administration (NASA).
The US space agency's satellite sensors observed aerosol levels at a 20-year low post the countrywide lockdown, implemented to slow the spread of the novel coronavirus.

"We knew we would see changes in atmospheric composition in many places during the lockdown," said Pawan Gupta, a Universities Space Research Association (USRA) scientist at NASA''s Marshall Space Flight Center. "But I have never seen aerosol values so low in the Indo-Gangetic Plain at this time of year," added Mr Gupta.

Acting Assistant Secretary of State for South and Central Asia Alice G Wells tweeted, "These images from NASA were taken each spring starting in 2016 and show a 20-year low in airborne particle levels over India. When India and the world are ready to work and travel again, let's not forget that collaborative action can result in cleaner air."

The data published with maps show aerosol optical depth (AOD) in 2020 compared to the average for 2016-2019. Aerosol optical depth is a measure of how light is absorbed or reflected by airborne particles as it travels through the atmosphere.

If aerosols are concentrated near the surface, an optical depth of 1 or above indicates very hazy conditions. An optical depth, or thickness, of less than 0.1 over the entire atmospheric vertical column is considered "clean." The data were retrieved by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite.

In the first few days of the lockdown, it was difficult to observe a change in the pollution signature. "We saw an aerosol decrease in the first week of the shutdown, but that was due to a combination of rain and the lockdown," said Mr Gupta.

Around March 27, heavy rain poured over vast areas of northern India and helped clear the air of aerosols. Aerosol concentrations usually increase again after such heavy precipitation.

"After the rainfall, I was really impressed that aerosol levels did not go up and return to normal. We saw a gradual decrease and things have been staying at the level we might expect without anthropogenic emissions," Mr Gupta said.

On March 25, the Indian government placed its 1.3 billion citizens under a strict lockdown to reduce the spread of COVID-19. The countrywide mandate decreased activity at factories and severely reduced car, bus, truck and airplane traffic. Every year, aerosols from anthropogenic (human-made) sources contribute to unhealthy levels of air pollution in many Indian cities.

Aerosols are tiny solid and liquid particles suspended in the air that reduce visibility and can damage the human lungs and heart.

In southern India though, the story is a little hazier. Satellite data show aerosol levels have not yet decreased to the same extent. In fact, levels seem to be slightly higher than in the past four years. The reasons are unclear but could be related to recent weather patterns, agricultural fires, winds or other factors.

"This a model scientific experiment," Robert Levy, program leader for NASA's MODIS aerosol products, said about the lockdown and its effects on pollution.

"We have a unique opportunity to learn how the atmosphere reacts to sharp and sudden reductions in emissions from certain sectors. This can help us separate how natural and human sources of aerosols affect the atmosphere," Mr Levy added.

As many as employees of Zee News have tested positive for the coronavirus, Editor-in-Chief Sudhir Chaudhary said on Monday. Most of them are asymptomatic, he said, tweeting an official statement from Zee News about the situation.

The organisation said that on May 15, one of its employees tested positive for the coronavirus. Following this, the company started testing employees who may have come in contact with the employee. Twenty-seven more were found to be infected.

“Fortunately most of them are asymptomatic and are not complaining of any discomfort,” Zee News said. “We believe this is because of early diagnosis and proactive intervention.”

The news network said all guidelines and protocols have been followed, and its office, newsroom and studios have been sealed for sanitisation. The Zee News team has been shifted to an alternative facility.

“At the moment, Zee Media Corporation has 2,500 employees, by far the largest in the private sector,” the company said. “We are committed to the safety of each one of them.”

Chaudhary also claimed that “those who are infected had the option of sitting at home and sharing memes”. “They came to work because they are committed professionals.”

Following this, some social media users claimed that Zee News employees found infected with Covid-19 were still at work. In response, Chaudhary alleged that a malicious campaign was being conducted to distort his statement. He said no infected employee had come to work, and all the contacts of the employee who tested positive on May 15 had been tested and quarantined.

Over the past two months, journalists from several media organisations have tested positive for the coronavirus. On April 21, 26 employees of a Tamil news channel based in Chennai tested positive for the coronavirus. The previous day, over 50 journalists from Mumbai were found infected, after samples of over 170 journalists were tested.

On May 7, a newspaper journalist died of the coronavirus in Agra. Some states, such as Uttar Pradesh, Karnataka and Delhi, have tested journalists for Covid-19.

Patna, Feb 21: The country is paying the price for failure to send Muslims to Pakistan and bring Hindus to India after the Islamic state came into being at the time of Independence, Union minister Giriraj Singh has said, triggering a fresh controversy.

The BJP leader made the remark in Purnea district in the Seemanchal region of Bihar which has a sizeable Muslim population and where the Begusarai MP was canvassing in favor of the Citizenship (Amendment) Act.

Highlighting the need for such a legislation, he told reporters late Thursday "when our forefathers were fighting for Independence from British rule, Jinnah was pushing for the creation of an Islamic state".

"Our forefathers, however, committed a mistake. Had they ensured that all our Muslim brothers were sent to Pakistan and Hindus brought here, the need for such a move (CAA) would not have arisen. This did not happen and we have paid a heavy price for it," the outspoken BJP leader said.

The CAA, which seeks to fast-track granting citizenship to non-Muslim refugees from Pakistan, Bangladesh and Afghanistan who might have fled their home countries because of religious persecution, has become a major bone of contention since it is feared that a country-wide National Register for Citizens (NRC) may follow.

The Narendra Modi government, which had formerly hinted that a country-wide NRC was on the anvil, seems to have put it on the backburner though a section of citizens across the country, especially Muslims, have been organizing protests out of fear that, if implemented, the NRC may result in a large number of people becoming stateless.

Singh has often been in the crosshairs of the opposition for placing his foot in the mouth. This time, however, his words were frowned upon even by NDA ally Lok Janshakti Party, founded by his cabinet colleague Ram Vilas Paswan and now headed by his son Chirag Paswan.

The young LJP chief, who kicked off a state-wide "Bihar First-Bihari First" yatra here Friday morning, to project the NDAs progressive face ahead of the assembly polls due later this year, expressed strong disapproval of Singh's utterance and noted the coalition had to suffer in the Delhi polls because of "divisive" remarks by BJP leaders.

"We are an NDA constituent but many times our coalition partners say things which the LJP does not at all agree with. This one (Giriraj Singhs statement) is such an example. Had a person of my party spoken in this fashion, I would have taken responsibility and acted," Paswan said.

He said he had placed his view repeatedly on record that the coalition had to suffer on account of divisive remarks, Paswan said in apparent reference to inflammatory speeches by BJP leaders like Union minister Anurag Thakur and BJP MP Parvesh Verma, among others.

"The people of Delhi voted on the basis of performance. We wish they do so again in Bihar and real issues don't get drowned in political cacophony.

"The Nitish Kumar government has accomplished a lot, though much more needs to be achieved. We wish to reach out to people with our vision for the future, said Paswan, before he embarked on the yatra on a customized bus decorated like a chariot in front of which he offered prayers and smashed a coconut.

Meanwhile, Giriraj Singh who loves to wear his Hindu nationalism on the sleeves was busy joining issue with Asaduddin Owaisi's AIMIM which has been under attack for controversial remarks by its leader Waris Pathan.

Sharing video of an old speech by Owaisis brother Akbaruddin which had landed him in jail, besides Pathan's recent remark, Singh asked the opposition RJD-Congress combine in Bihar and the "tukde tukde gang" whether they wanted to "convert India into Pakistan".