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New Delhi, May 23: India witnessed the biggest ever spike of 6,654 positive cases in the last 24 hours, taking the total number of COVID-19 cases to 1,25,101, according to the Union Ministry of Health and Family Welfare.

As many as 137 deaths have been reported in the last 24 hours, taking the death toll to 3,720.
Out of the total number of cases, 69,597 are active and 51,784 have been cured/discharged or have migrated.

Maharashtra continues to remain the worst-affected state with 44,582 COVID-19 cases. It is followed by Tamil Nadu (14,753), Gujarat (13,268), and Delhi (12,319).

The nationwide lockdown imposed as a precautionary measure to contain the spread of COVID-19 has been extended till May 31.

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.

Pune, Jul 4: Now that wearing mask in public places has become the new normal, a resident of Pimpri-Chinchwad of Pune district, Shankar Kurade has got himself a mask made of gold worth Rs 2.89 lakhs amid the COVID-19 pandemic.

"It's a thin mask with minute holes so that there is no difficulty in breathing. I am not sure whether this mask will be effective," said Kurade.

Kurade loves wearing gold ornaments and his hands and neck are loaded with jewellery.

This unique idea struck him soon after he saw a man wearing a silver mask on social media.

"I saw a video on social media of a man in Kolhapur wearing a silver mask and then an idea struck me to have a mask of gold. I talked to a goldsmith and he gave me this five and a half pound gold mask in a week," said Kurade.

"All my family members love gold, if they too demand it, then I will get it designed for them too. I do not know if I will be infected with coronavirus wearing a gold mask or not, but following all the rules of the government can prevent the spread of virus," he added.

Since childhood, Shankar is very fond of gold ornaments, that is the reason he wears gold rings in all the fingers, gold bracelets on his wrist and huge gold chains around his neck.