ISRO launches record 20 satellites in one go

Jan 1: Two army personnel were killed in a gunfight with heavily-armed Pakistani infiltrators along the Line of Control (LoC) in Jammu and Kashmir's Rajouri district on Wednesday, officials said.

The infiltrators were intercepted in the Khari Thrayat forest when they were trying to sneak into India from Pakistan-occupied Kashmir (PoK), they said.

"Two army soldiers martyred during cordon and search operation in Nowshera sector. The operation is still in progress and further details are awaited," Jammu-based Indian Army Public Relations Officer (PRO) Lt Col Devender Anand said in a statement.

The search operation was launched following information about the movement of suspected terrorists, the officials said.

The infiltrators opened fire on the troops and during a fierce gunfight, the two soldiers were killed, they said.

The officials said a massive operation is on in the area.

Lucknow, Jul 21: Madhya Pradesh Governor Lalji Tandon, a veteran political figure in Uttar Pradesh where he had served as a cabinet minister, died at a hospital here early Tuesday.

The 85-year-old was admitted to the hospital on June 11 with breathing problems, fever and difficulty in urination.

He died at 5:35 am in Medanata Hospital, according to his son Ashutosh Tandon, a UP cabinet minister.

Lalji Tandon is survived by wife and three sons.

His body will be kept at his official residence in Hazratganj and later at his Sindhi Tola residence in Chowk to enable people to pay their last respects.

The last journey will start at 4 in the evening for the Gulala Ghat where his last rites will be performed later in the day, Ashutosh Tandon said in a statement.

The UP government has announced three days mourning as a mark of respect to Lalji Tandon, a former cabinet minister, a government spokesman said.

Belonging to the Atal Bihari Vajpayee and L K Advani era of BJP leaders, Lalji Tandon proved himself as an able administrator during his decades-long political career in Uttar Pradesh.

A former Lok Sabha MP, he was later given gubernatorial responsibility.

He took oath as Madhya Pradesh governor on July 29, 2019, when the Congress was in power in the state, after serving in the same post in Bihar for nearly 11 months. 

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.