India's retail inflation hits 8-month high of 3.18% on back of higher food prices

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 13: About 56 per cent of children were found to have no access to smartphones which have emerged as essential tools for online learning during the coronavirus-induced lockdown, according to a new study that surveyed 42,831 students at various school levels.

The study ''Scenario amidst COVID 19 - Onground Situations and Possible Solutions'' was conducted by child rights NGO Smile Foundation with an aim of analysing the access to technology.

The findings of the study showed that 43.99 per cent of surveyed children have access to smartphones and another 43.99 per cent of students have access to basic phones while 12.02 per cent do not have access to either smartphones or basic phones.

A total of 56.01 per cent children were found to have no access to smartphones, the study said.

"Concerning television, it was noted that while 68.99 per cent have access to TV, a major chunk of 31.01 per cent does not. Hence suggesting that using smartphone interventions for enhancing learning outcomes is not the only solution," it said.

At the primary level of education (class 1 to 5) 19,576 children were surveyed while at upper primary level (class 6 to 8) 12,277 children were surveyed. At secondary level of education (class 9 to 10) 5,537 children were surveyed and at higher secondary level (class 11 to 12) 3,216 children were surveyed.

The survey based on which the study was conducted used two approaches - over the telephone wherein the NGO reached out to the children whose database it already had -- students enrolled in various education centres of the NGO -- and second was through community mobilization wherein community workers went door to door to get answers.

The survey was conducted in 23 states, including Delhi, Gujarat, Maharashtra, Karnataka, Tamil Nadu, West Bengal, Andhra Pradesh, Telangana, Uttar Pradesh, Haryana, over a period of 12 days from April 16 to April 28.

The lockdown induced by the COVID-19 pandemic in March prompted schools and colleges to move to the virtual world for teaching and learning activities. However, many experts say the digital divide in the country may turn online classes into an operational nightmare.

As per official statistics, there are over 35 crore students in the country. However, it is not clear as to how many of them have access to digital devices and Internet.

Santanu Mishra, co-founder and executive trustee, Smile Foundation, said the findings clearly show that the digital divide is a real challenge, and multiple approaches need to be implemented to cater to all across the nation.

"As an exercise before we start any programme, we do a baseline study to understand the on-ground challenges so that our programmes can bring in real work and real change. With the onset of the pandemic, following indefinite school closures, it is more important than ever to understand the situation and how can we ensure that children are given quality education. Through this, we understand that customized modules need to be built in accordance with the channel of communication," he said.