Rahul Gandhi, Sachin Pilot Offer Prayers at Rajasthan's Ajmer Dargah

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, Jun 10: The Enforcement Directorate (ED) on Wednesday brought back over 2,300 kg of polished diamonds and pearls worth Rs 1,350 crore of firms belonging to Nirav Modi and Mehul Choksi from Hong Kong, officials said.

Out of the 108 consignments that landed at Mumbai, 32 belong to overseas entities "controlled" by Modi while the rest are of Mehul Choksi firms.

Both the businessmen are being probed by the ED under the Prevention of Money Laundering Act (PMLA) in connection with an over USD 2 billion alleged bank fraud at a PNB branch in Mumbai.

The valuables include polished diamonds, pearls and silver jewellery, and is worth Rs 1,350 crore. 

The ED completed "all legal formalities" with authorities in Hong Kong to bring back these valuables, the agency said.

These will formally seized under the PMLA now, it said.

New Delhi, May 31: Congress leader Kapil Sibal on Sunday questioned the Prime Minister on how much money has been given to labourers from the PM-CARES Fund.

"I would like to ask Prime Minister Modi, 'Can you tell us how much money did you give to labourers from your PM-CARES Fund?' I request him to answer this question. Many people died during this period, some died while walking, some died in the train, some died of hunger," Sibal said while addressing a virtual press conference.

The senior Congress leader further asked how much ex gratia did the Prime Minister give to the labourers who died in the corona crisis while negotiating the lockdown.

"I refer you to Section 12 of the Disaster Management Act. It says that ex gratia assistance on account of the loss of life and also assistance for the restoration of livelihood should be provided by the government. Did the government give ex gratia assistance to people who died in the crisis? The act also mentions special provisions for widows and orphans. The government should clarify how much assistance they gave to such people," he said.

Sibal said that the government should keep aside its agenda for the last six years and concentrate on making pro-poor policies.

"In the coming days, our economy is going to go into the negative territory as also confirmed by RBI. There are 45 crore labourers in our country. What will be their state? We have to look at our future. That is why we want to request the government that the agenda that they have run over the last six years should be kept aside and that government should care about the poor and draft policies for them," the Congress leader said.