US police officer detained in India for carrying bullets

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.

Mar 5: The Kerala government has given its nod to a proposal aimed at encouraging students aged between 18 and 25 years to take up part-time jobs while pursuing education so as to help them gain work experience and hone their skills.

The government has decided to accept the proposal as a policy decision at the Cabinet meeting held on Wednesday, an official press release said.

The aim is to ensure that in a fiscal, 90 days of work is assured for students in government departments, local body organisations, PSUs and private companies.

This will help in developing a work culture among students.

Honorariums will be given to students by the organisations employing them part-time, the release said.

Students aged between 18 and 25 years will be permitted to become part of the scheme which will help them to gain work experience and hone their skills, the release added.

In another decision, the government decided to release Rs 26 crore from the Chief Minister's disaster relief fund for providing compensation to farmers who suffered crop loss during the 2018 floods.

New Delhi, May 12: With 3,604 more COVID-19 cases reported in the last 24 hours, India's tally of coronavirus cases reached 70,756, said the Union Ministry of Health and Family Welfare on Tuesday. 87 deaths were reported during the period.

As per the tally, 46,008 patients are active coronavirus cases while 22,454 patients have been cured/discharged and one patient has migrated.

With 87 deaths due to COVID-19 reported in the last 24 hours, the number of deaths has risen to 2,293.

As per the ministry, Maharashtra has the most number of coronavirus cases with 23,401 cases with 4,786 patients being cured/discharged while 868 deaths have been reported in the state.

Gujarat is second on the list with 8,541 cases that include 2,780 patients recovering from the disease and 513 fatalities.

Tamil Nadu's tally reached 8,002 cases, including 2,051 recoveries and 53 deaths.

While Delhi's tally stands at 7,233 cases with 2,129 patients recovered and 73 deaths.

Meanwhile; Mizoram (one case reported--now recovered), Goa (seven cases reported and all seven recovered), Manipur (Two cases reported and both patients recovered) and Arunachal Pradesh (one case reported--now recovered) have reported no new cases in the last 24 hours.