India, Switzerland deny sharing 'black money' details

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.

New Delhi, Apr 14: Prime Minister Narendra Modi on Tuesday requested young scientists of the country to come forward and take the lead in developing a vaccine for novel coronavirus which has claimed over one lakhs lives worldwide.

"While India has limited resources today. I have a special request for India's young scientists. They should come forward and take a lead in developing a vaccine for coronavirus for the welfare of the world, for the welfare of the human race," the Prime Minister said in the address to the nation.

He said that if people continue to be patient and follow rules then the country will be able to defeat even a pandemic like coronavirus.
Prime Minister Modi also announced that the country will remain under lockdown till May 3 to contain COVID-19 cases. The 21-day lockdown, which was announced by the Prime Minister last month, was slated to end today.

However, he indicated at easing of lockdown restrictions in places where there are no hotspots after April 20.

"Till 20th April, all districts, localities, states will be closely monitored, as to how strictly they are implementing norms. The states which will not let hotspots increase, they could be allowed to let some important activities resume, but with certain conditions," Modi said.

Odisha, Punjab, Maharashtra, Telangana, Tamil Nadu and Puducherry have already announced the extension of lockdown.

India's total number of coronavirus positive cases has climbed to 10,363 including 8,988 active cases, 1,035 cured/discharged/migrated and 339 deaths, the Ministry of Health and Family Welfare said today.

New Delhi, Jun 30: Amid calls for boycotting Chinese products after India-China face-off in eastern Ladakh, Congress leader Rahul Gandhi on Tuesday hit out at Prime Minister Narendra Modi-led government claiming that imports from China have increased under the NDA regime.

"Facts don't lie. BJP says: Make in India. BJP does: Buy from China," Gandhi tweeted along with a graphic of the percentage of imports from China during the UPA rule and the NDA government.

The graphic claims that imports from China were at 12-13 per cent when the Congress-led UPA government vacated office in 2014 but now stood at 17-18 per cent in 2020.

The Congress leader has been vehemently targeting the Centre on the India-China border situation after 20 Indian soldiers were killed in violent face-off with Chinese troops in Ladakh's Galwan valley earlier this month.

Indian intercepts have revealed that the Chinese side suffered 43 casualties, including dead and seriously injured, in the face-off.