Robert Vadra appears before ED for third time in money laundering case probe

Kolkata, May 11: Murshidabad district, one of the biggest contributors to the army of migrant workers from West Bengal, received news of unnatural deaths of three of these people since Saturday. While two died in Kerala, one was found dead in a rented house in Odisha.

Residents of Baliaghati village in Murshidabad’s Suti police station area said Safikul Sheikh (31) was killed in a road accident in Kerala. Sheikh’s associates called up his family on Sunday morning and said he had gone to a local market, violating lockdown orders, when the accident took place. Sheikh wanted to return home before Eid but got stranded.

Mohammad Hafijul, one of Sheikh’s relatives, said, “A few days ago a special train from Kerala carried migrant workers to Murshidabad but Safikul did not have the money to buy a ticket. We do not know how his body will be brought back.”

In another incident, a 24-year-old resident of Domkal allegedly hanged himself in Kerala on Saturday. He used to work in a brick kiln. His mother said, “My son was depressed as he could not buy a ticket to board the special train that came to Murshidabad. We have appealed to the local administration to bring back his body.”

In the third incident, Bakul Sheikh (24) died under mysterious circumstances at Sonepur in Odisha where he went five months ago to work as a mason. Sheikh hails from Kohetpur village in Shamserganj. His relatives told the local police that his associates called up and said he was found dead inside the toilet of the house where he was living with other migrant workers.

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.