President's rule imposed in Uttarakhand

Kolkata, Jun 24: Trinamool Congress (TMC) MLA Tamonash Ghosh, who had tested positive for Covid-19 in May, died at a hospital here on Wednesday, party sources said.

He was 60.

The three-time MLA from the Falta assembly constituency in South 24 Parganas district was admitted to a hospital after he tested positive for the disease, they said.

He had several complications related to the heart and the kidney, the sources said.

"Very, very sad. Tamonash Ghosh, 3-time MLA from Falta & party treasurer since 1998 had to leave us today. Been with us for over 35 years, he was dedicated to the cause of the people & party. He contributed much through his social work," West Bengal Chief Minister and TMC supremo Mamata Banerjee tweeted.

"He has left a void that will be difficult to fill. On behalf of all of us, heartfelt condolences to his wife Jharna, his two daughters, friends and well-wishers," she added.

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.

Feb 28: Life was limping back to normalcy in some parts of the riot-hit northeast Delhi, with police and paramilitary personnel maintaining strict vigil in view of Friday prayers at mosques.

Police officers said they were also making extra efforts to quell rumours, and holding regular flag marches and interactions in the neighbourhoods of affected areas as confidence-building measures.

In some areas of northeast Delhi, signs of normal life were witnessed with opening of shops. In violence-hit areas also, shops in streets and bylanes were open.

Nearly 7,000 paramilitary forces have been deployed in the affected areas of the northeast district since Monday. Besides, hundreds of Delhi police personnel are on the ground to maintain peace and prevent any untoward incident.

At least 38 were killed and over 200 injured in the communal clashes that broke out in northeast Delhi on Monday after violence between citizenship law supporters and protesters spiralled out of control The areas affected include Jaffrabad, Maujpur, Chand Bagh, Khureji Khas and Bhajanpura..

The Union Home Ministry had said on Thursday night that no major incident was reported from the northeast district in the past 36 hours, It had said that prohibitory orders imposed under Section 144 would be relaxed for 10 hours in view of improvement in the situation.