Angela Merkel in Bengaluru, PM Modi to join her

New Delhi, Feb 12: Delhi Chief Minister-designate Arvind Kejriwal was on Wednesday elected as the leader of AAP legislative party, a day after he led the party to an emphatic victory in the Delhi Assembly elections.

Kejriwal was elected as the AAP legislative party leader during a meeting called by him with the newly-elected party MLAs. The meeting was held at the AAP chief's residence.

Atishi, AAP's winning candidate from Kalkaji constituency said after the meeting, "It is definitely a validation of the work that has been done by AAP in the last five years, be it education, health care, water or electricity."

Kejriwal is slated to take oath as the Delhi Chief Minister for the third time at Ramlila Maidan on February 16.

AAP galloped to a landslide victory by winning 62 of the 70 seats in the Delhi Assembly elections in the face of a high-voltage campaign by the BJP, which fielded a battery of Union Ministers and Chief Ministers in its electioneering, spearheaded by Home Minister Amit Shah.

The BJP marginally improved its tally, managing just eight seats from its 2015's tally of three seats. The Congress, which drew a blank in the previous elections, failed to open its account yet again.

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 4: CSIR Director-General Shekhar Mande said on Thursday that the World Health Organisation's (WHO) decision to halt hydroxychloroquine (HCQ) drug trial was taken in haste and the global body should have actually analysed the data before making the decision.

"I firmly believe that WHO decision was taken in haste it was a kind of knee jerk reaction they should have actually analyse the data on their own before temporarily suspend the trials that is my personal opinion," Mande said.

India's nodal government agency ICMR (Indian Council of Medical Research) overseeing the country's response to the coronavirus pandemic last month wrote to the WHO citing differences in dosage standards between Indian and international trials that could explain the efficacy issues of HCQ in treating COVID-19 patients.

In addition, Dr Sheela Godbole, National Coordinator of the WHO-India Solidarity Trial and Head of the Division of Epidemiology, ICMR-National AIDS Research Institute also wrote a letter via an email to Dr Soumya Swaminathan, Chief Scientist at World Health Organisation.

In a letter, Dr Godbole stated: "There was no reason to suspend the trial for safety concern," attributing it to the current RECOVERY data which differs significantly from the non-randomised assessment by Mehra et al, a scientific paper.

Referring to the letter, the CSIR head said, "We don't know what actually happened behind the scenes but the hypothesis is that because of the paper published in Lancet. It is a very well known journal and if Lancet has done due vigilance in publishing the paper. 

Therefore, the WHO thought the paper's findings are right that's why WHO hold based on what is published on Lancet. The WHO shouldn't have accepted it immediately this should have taken their own due vigilance to find out that study is right or not."

DG CSIR said because there is a global outcry it must have put pressure on both Lancet as well as WHO and both of them now retracted from their original position. "WHO has started a trial again and Lancet has put an expression of concern on their website both of these are very welcome development for science," he said.

"So I am pretty sure that Lancet would have published the reports only after seeing somewhere the drug failed to work," Mande said.