India won't remain passive if attacked: Army chief

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, May 15: Microsoft founder Bill Gates on Friday thanked Prime Minister Narendra Modi for the interaction and stressed that combating the coronavirus pandemic requires global collaboration.

"Thank you for the conversation and partnership PM Narendra Modi. Combating the pandemic requires global collaboration. India's role is key as the world works to minimize social and economic impact, and pave the way to vaccine, testing, and treatment access for all," Bill Gates said.

Prime Minister Narendra Modi on Thursday interacted with philanthropist and Microsoft co-founder Bill Gates and discussed the global response to Covid-19 and the importance of global coordination on scientific innovation to combat the pandemic.

The Prime Minister underlined the conscious approach that India has adopted in its fight against the health crisis - an approach based on ensuring public engagement through appropriate messaging, a PMO release said.

He explained how this people-centric bottom-up approach has helped win acceptability for physical distancing, respect for frontline workers, wearing of masks, maintaining proper hygiene, and respecting lockdown provisions.

They agreed that given India's willingness and capacity to contribute to global efforts, particularly for benefit of fellow developing countries, it was important for India to be included in the ongoing global discussions for coordinating responses to the pandemic.

The Prime Minister also suggested that the Gates Foundation could take the lead in analyzing the necessary changes in lifestyles, economic organisation, social behaviour, modes of disseminating education and healthcare, that would emerge in the post-Covid world, and the associated technological challenges that would need to be addressed.

He said that India would be happy to contribute to such an analytical exercise based on its own experiences.

Lucknow, Mar 5: Uttar Pradesh chief minister Yogi Adityanath said last night that the role of teachers would come under the scanner when "anti-India" slogans are raised at universities and institutions of higher education.

"When anti-India slogans are raised at institutions of higher education, we should be prepared to ask why this type of distortion occurrs among our students?" he said at a programme organised by the Basic Shiksha Parishad in Lucknow.

"We begin our work with pledge for the country's unity and integrity and today slogans are raised for the division of the nation. In such a situation, questions are raised over the role of teachers who are considered equal to god in society," he said.

"Who all are involved in this sin and chaos? Governments can provide resources, but the one who has given them basic education, who has given them secondary education and who has led them to that place, all of them should evaluate their actions today," the chief minister said.

Speaking about the condition of education in the state when his government came to power three years ago, he said there was an atmosphere of chaos and anarchy in the state and the condition of basic education was very bad.

"The worst problem was that of proxy teachers. Our government started the process of prohibiting proxy teachers in the first phase," he said.

Adityanath said that a teacher is not just a government servant, but the fate of the nation. He said teachers should learn from Chanakya.

Had Chanakya confined himself to Nalanda University, he would not have been able to make India a superpower of the world during that period. Teachers will have to prepare themselves according to the challenges and need of society, he added.