Coronavirus can go up to 8 metres from exhalation, linger in air for hours: MIT scientist

News Network
April 2, 2020

The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.

Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.

According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.

 She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.

However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.

Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.

"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.

"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.

The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.

"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study

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News Network
February 1,2026

Bengaluru: The Karnataka High Court has refused to quash an investigation against a WhatsApp group administrator accused of allowing the circulation of obscene and offensive images depicting Hindutva politicians and idols in 2021.

Justice M Nagaprasanna observed that, prima facie, the ingredients of the offence under Section 295A of the Indian Penal Code were made out. “The offence under Section 295A of the IPC is met to every word of its ingredient, albeit prima facie,” the judge said.

The petitioner, Sirajuddin, a resident of Belthangady taluk in Dakshina Kannada district, had challenged the FIR registered against him at the CEN (Cyber, Economics and Narcotics) police station, Mangaluru, for offences under Section 295A of the IPC and Section 67 of the Information Technology Act. Section 295A relates to punishment for deliberate and malicious acts intended to outrage the religious feelings of any class of citizens.

According to the complaint filed by K Jayaraj Salian, also a resident of Belthangady taluk, he received a WhatsApp group link from an unknown source and was added to the group after accessing it. The group reportedly had six administrators and around 250 participants, where obscene and offensive images depicting Hindu deities and certain political figures were allegedly circulated repeatedly.

Sirajuddin was arrested in connection with the case and later released on bail on February 16, 2021. He argued before the court that he was being selectively targeted, while other administrators—including the creator of the group—were neither arrested nor investigated. He also contended that the Magistrate could not have taken cognisance of the offence under Section 295A without prior sanction under Section 196(1) of the CrPC.

Rejecting the argument, Justice Nagaprasanna held that prior sanction is required only at the stage of taking cognisance, and not at the stage of registration of the crime or during investigation.

The judge noted that the State had produced the entire investigation material before the court. “A perusal of the material reveals depictions of Hindu deities in an extraordinarily obscene, demeaning and profane manner. The content is such that its reproduction in a judicial order would itself be inappropriate,” the court said, adding that the material, on its face, had the tendency to outrage religious feelings and disturb communal harmony.

Observing that the case was still at the investigation stage, the court said it could not interdict the probe at this juncture. However, it expressed concern that the investigating officer appeared to have not proceeded uniformly against all administrators. The court clarified that if the investigation revealed the active involvement of any member in permitting the circulation of such content, they must also be proceeded against.

“At this investigative stage, any further observation by this Court would be unnecessary,” the order concluded.

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News Network
February 5,2026

In an era where digital distractions are the primary rival to academic excellence, the Karnataka Education Department is taking the fight directly to the living room. As the SSLC (Class 10) annual examinations loom, officials have launched a localized "digital strike" to ensure students aren't losing their competitive edge to scrolling or soap operas.

The 7-to-9 Lockdown

The department has issued a formal directive urging—and in some cases, enforcing via home visits—a total blackout of mobile phones and television sets between 7:00 PM and 9:00 PM. This two-hour window is being designated as "sacred study time" across the state until the examinations conclude on April 2.

Key Pillars of the Initiative:

•    Doorstep Advocacy: Teachers are transitioning from classrooms to living rooms, meeting parents to explain the psychological benefits of a distraction-free environment.

•    Parental Accountability: The campaign shifts the burden of discipline from the student to the household, asking parents to lead by example and switch off their own devices.

•    The Timeline: The focus remains sharp on the upcoming exam block, scheduled from March 18 to April 2.

"The objective is simple: uninterrupted focus. We are reclaiming the evening hours for the students, ensuring their environment is as prepared as their minds," stated a senior department official.

Student vs. Reality

While the student community has largely welcomed the "forced focus"—with many admitting they lack the willpower to ignore notifications—the move has sparked a debate on enforceability. Without a "TV Police," the success of this initiative rests entirely on the shoulders of parents and the persuasive power of visiting educators.

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News Network
February 8,2026

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Mangaluru: Emphasising the importance of integrating cultural awareness with formal education, former Mangaluru North MLA and noted community leader Moidin Bawa said such an approach is vital for the holistic development of children and helps shape responsible, confident future citizens. He was speaking as the chief guest at the Prep Graduation Ceremony of Barakah International School and College.

The young graduates enthralled the audience with a vibrant mix of performances, including skits, action songs, short plays, and other engaging cultural programmes that showcased the creativity and confidence nurtured by the institution.

The event was graced by several prominent personalities, including Abdul Naser “Lucky Star”, President of the Wakf Advisory Committee; Dr Mohammed Nohman, Orthopaedic Surgeon; S. A. Khaleel, Chairman of the Bolar Islamic Centre; Naufal Kokkada, President of the SKSM Youth Wing; Suhail Kandak, Chairman of the Make a Change Foundation; and Mohammad Ashraf Badriya, President of Muslim Aikyata Vedike, among others.

The programme began with a warm welcome by Principal Sharfuddin B.S., who highlighted Barakah’s distinctive educational philosophy that blends academic excellence with strong moral and cultural values.

Ayan Ashraf, Director of Barakah, conveyed the Chairman’s message and reaffirmed the institution’s commitment to value-based education.

The vote of thanks was proposed by Mohammed Haneef, Principal of Islamic Studies.

Barakah International School and College is a reputed educational institution in Mangaluru, offering quality education from nursery to degree level. The institution is known for its holistic education model that harmoniously integrates cultural values with academic excellence, ensuring the all-round development of students.

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