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India: Big Science in the 20th century and beyond

In this blog post, Ed Publica’s Science Editor, Karthik Vinod, skims over some of the state-funded science projects in India that existed before and after independence.

Karthik Vinod

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Meghnad Saha (right) with his fellow scientists posing in front of the cyclotron's magnet | Credit: Wikimedia

Science after World War II

Scientific research changed forever in the aftermath of the World War II. Nuclear weapons entered the fray, and scientists worked – not alone anymore – but now in groups rivalling organizations. Governments walked in for the first time, institutionalizing science as a state-project. In the US, Vannevar Bush’s Science: the Endless Frontier advocated for a dichotomy within science, between applied and basic research. India soon advocated for something Though flawed, it’s a blueprint used across the world, including in India. But it needs to change.

Following independence, Jawaharlal Nehru, India’s first prime minister, resorted to building centralized institutions across the country, with the Indian Institute of Technologies (IITs) being famous amongst those pursuing a technical stream. Along with the Indian Institute of Science (IISc.), they’ve attracted the country’s most meritorious and bright students. Nehru viewed and appreciated scientific thinking as a “way of life” and an aspect that’ll break the shackles of superstitious belief in many Indians. He popularized the phrase “scientific temper”, which was later amended into the Indian constitution by his daughter and late prime minister, Indira Gandhi. However, this was during the Emergency Period, when democracy was curtailed, dissidents were imprisoned, and mass sterilization campaigns castrated many men against their will.

Keeping political hypocrisy aside, the administrations since then hasn’t picked up much steam either on being serious about its fundamental scientific research. This is not to say there hasn’t been marvels in technological innovation. Vikram Sarabhai, the technocrat scientist and aristocrat, who helped seed incentives for the country to invest in a space program, envisioned science and technology to enable Indians use of state-of-the-art technology, without going through the rudimentary “stages of growth” that was thought to plague many developing nations. The Indian Space Research Organization (ISRO) builds satellites and rockets, and has been the harbinger rather in public eye for the country’s assertive rise as a space power. Fundamental science research has taken a backseat, with funding woes and political apathy felt even today.

Funding for ISRO virtually trumps anything else that churns in public scientific institutions. Though this is a common attributed share among space faring nations, India’s amongst the lower tier of nations that spends on research and development (R&D) – constituting just 0.64% of the Indian economy, and a continuing decline in funds allocated in yesteryears. India’s next door neighbor China spends some 2.4%, and both the US and UK spend either 3% or more per year.

It’s not like India doesn’t have illustrious or even seminal scientific contributions in the modern age. Scientific research did flourish in British India, amongst a few practitioners, benefitting from uninterrupted time in their laboratories with relatively cheap equipment– as with experimentalists such as Jagdish Chandra Bose and C.V. Raman; to name a few, or theorists including Meghnad Saha and S.N. Bose. Today though, these names remain largely confined to history in public discourse.

Science in pre-independent India

The imperial capital of science in India, Calcutta, was home to top-tier frontier research in quantum mechanics in the early 20th century. In the 1920s, Satyendra Nath Bose, a theorist, solved a particular problem related to the blackbody radiation law that evaded even Einstein. Bose, whom we profiled in our Know the Scientist page, fostered a collaboration with Einstein, culminating in numerous theoretical advances in quantum statistics, especially predicting the fifth state of matter, the Bose-Einstein condensate. Paul Dirac, the English physicist, coined the name bosons, after the class of quantum particles with integer spins, that Bose and Einstein’s statistics describe properties. It was one of these bosons (a word-play on “Bose-ons”) that particle physicists confirmed at the Large Hadron Collider (LHC) in Geneva, Switzerland in 2012.

Science during British India was top-notch, and continued its trend in the immediate aftermath of Indian independence. In 1948, Calcutta was abuzz again, but now with a cyclotron that they were building. A cyclotron’s a device that accelerates particles to near light-speed in the presence of electromagnetic fields, thereby producing radiation. It aided in frontier research in nuclear physics, for example, measuring cross-sections of the uranium nucleus (U-235). Housed at the Saha Institute of Nuclear Physics, accelerator physicists received funding to build a bigger cyclotron at the Variable Energy Cyclotron Centre, touching energies in the MeV range. Today, it’s part of the International Radioactive Ion Beam consortium, helping spread India’s fundamental research reach across the world.

So far, there’s been little coverage about the research in much of central universities and research institutions. It’s surprising how Bose’s contribution to quantum theory found no mention in India’s media discourse. Indian science hasn’t had limelight, not because there’s little research output – though there’s a case to make, as many has made before – but there’s a need for science communicators and journalists to help bridge that gap that exists between scientists and the public. The government has shown little consideration to extend science communication beyond publishing white papers about its importance.

Scientist or engineer?

Media representation of science is confused. The space program, that receives much public adulation and emblematic of national pride, is wrongly perceived as a scientific institution. Space engineers have become scientists in the public eye, despite rocket and satellite development is a matter of engineering, and not science. The former Indian president and “ISRO scientist” Abdul Kalam wasn’t a scientist per se, but an aerospace engineer. Barely mentioned in our public discourse are scientists that’ve done commendable research across the sciences.

Science done in central or local institutions for that matter hasn’t shared the limelight, anywhere as ISRO has since Independence. It’s the government’s pet, and has shaped narratives of technological innovation within and outside India. But this is largely technology history, without much scientific imperative.

Taking initiative

On the flip side, there’s much smaller science projects, that does combine the best of both worlds, combining technology development and science; thus blurring the dichotomy between applied and basic science research.

Govind Swarup, an Indian astronomer, worshiped by his peers as a “father of Indian radio astronomy” had voiced for a radio observatory, the first of its kind in Asia, to be constructed in the 1950s. The Indian government wasn’t interested, unless the astronomers received funds from sponsor countries. Australia had offered to pay and construct, after a long tussle, following which either party withdrew from discussions.

It was not until the 1980s, did India commence building an indigenous radio telescope. In 1995, the country’s first radio telescope, the Great Metrewave Radio Telescope (GMRT) was operational after a decade of construction. The team at GMRT contributed to the first detections of the cosmic gravitational wave background with its European radio astronomy counterparts in the Pulsar Timing Array project.

In 2016, the Indian astronomy community were greenlit to construct a gravitational wave detector in Pune, following confirmation of gravitational waves in February that year. Though this project too bas been plagued by successive delay construction would supposedly take off soon (perhaps late this year). In light of these late developments, politicians and scientists have begun beating the drums about the potential economic impact from involving Indian industry in the construction of the detector – utilizing state-of-the-art quantum technologies – in partnership with international teams. For the scientific community, precious data from the detector is incentive for attracting and inspiring the country’s emerging scientific talent.

Meanwhile, there’ve been hurdles that’ve prevented few other projects from taking off. The India-based Neutrino Observatory (INO), in Tamil Nadu, is one glaring example. Poor policy making amid environmental concerns that wasn’t addressed in time has forestalled construction for more than a decade. In this case rather, neither scientist nor policy maker bothered to engage with the public and hear out their concerns. And it takes much more development in science policies and public engagement to resolve these systemic issues.

Society

CBSE Revaluation Raises Questions Over KCET Rank Revisions

KCET rank revision comes under scrutiny after CBSE students’ revised Class 12 marks failed to reflect in the merit list despite official revaluation.

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KCET Rank revisions
A representative image of a student under academic stress amid uncertainty over examination results and admissions. Image credit: Laskhmiprasad S/iStock

As Karnataka’s engineering admissions enter the counselling phase, questions over the KCET rank revision process have emerged after a CBSE student’s Class 12 marks were officially revised following the board’s revaluation. With the KCET option entry window closing on Monday, Bengaluru-based aspirant Sounak Nag says his rank continues to reflect his pre-revaluation CBSE marks despite being issued a revised marksheet by the Central Board of Secondary Education (CBSE), raising concerns that the delay could cost him a college seat.

Nag told EdPublica that he is not alone and that several other students whose marks were revised after revaluation are facing similar uncertainty. Since KCET ranks are calculated using a combination of entrance examination scores and Class 12 marks, revisions in board scores can alter a candidate’s position in the merit list and affect the colleges and courses for which they are eligible.

From Corrected Marks to Uncertainty in KCET Rank Revisions

Nag said his Class 12 marks increased after CBSE completed its official revaluation process. Based on the revised scores, he expected KEA to update his KCET rank. However, despite receiving the revised marksheet, the published rank list remained unchanged.

With the counselling process underway, he fears that the delay in reflecting his revised marks could affect his admission prospects.

CBSE’s 2026 Valuation Controversy

After CBSE’s official revaluation, Nag said he received higher marks in all five subjects. His case comes against the backdrop of concerns surrounding CBSE’s 2026 digital On-Screen Marking (OSM) system.

Following the declaration of the Class 12 results, students across the country reported discrepancies in evaluation, including allegations of missing answers, blank scanned pages and incorrect marking. The complaints prompted many candidates to apply for verification and revaluation of their answer scripts.

KCET Rank revisions
Students check examination-related information online. (Representative image) Image credit: Deepak Sethi/iStock

In several cases, the revaluation process resulted in revised marks, raising questions over the accuracy of the initial evaluation. While CBSE maintained that its evaluation process was robust overall, it acknowledged certain discrepancies and issued revised marksheets through its official revaluation mechanism. For students appearing for entrance examinations that factor in board marks, these revisions have created a fresh challenge when admission processes are already underway.

No Clarity on Rank Revision, Student Alleges

According to Nag, repeated attempts to contact the Karnataka Examinations Authority (KEA) through its helpline numbers and official email addresses yielded no response. He later visited the KEA office in Malleswaram, where officials asked him to submit a written representation along with photocopies of his original and revised CBSE marksheets.

Nag said he complied with the request but was not given any written acknowledgement, and his KCET rank remained unchanged. As the option entry deadline approached, he visited the KEA office again seeking an update on his request. However, he said there was no clarity on whether his revised marks would be considered before counselling.

“I’ve submitted everything they asked for, but I still don’t know whether my revised marks will be reflected in my rank before counselling begins,” he told EdPublica.

The uncertainty comes amid an admissions cycle that has already witnessed multiple schedule changes in Karnataka. KEA postponed KCET counselling after the Higher Education Department delayed submitting the final seat matrix, with option entry eventually opening on June 20 and the process for NEET-qualified candidates beginning on June 22. Separately, the Consortium of Medical, Engineering and Dental Colleges of Karnataka (COMEDK) extended its counselling registration deadline to June 12, while document verification is continuing until the end of June, pushing subsequent rounds of seat allotment into July. Against this backdrop, students whose board marks are officially revised after revaluation face added uncertainty, as delays in updating entrance ranks during the counselling process could directly affect their admission prospects.

Beyond One Student

Nag’s case raises a broader question about how admission authorities handle revised board examination marks once entrance rank lists have been published. While examination boards such as CBSE provide mechanisms to correct evaluation errors through verification and revaluation, students say there is little clarity on whether, and how quickly, those revisions are reflected in ongoing admission processes.

The issue also comes amid continued scrutiny of India’s examination system. In recent years, evaluation discrepancies, technical glitches, delayed results and irregularities in competitive examinations have exposed gaps in grievance redressal mechanisms. Nag’s experience adds another dimension to that debate: whether admission authorities have adequate procedures to ensure that officially revised academic records are reflected before counselling and seat allotment are completed.

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EdPublica’s Dipin Damodharan wins international Solutions Journalism award for story on Kerala’s solar model

EdPublica’s Dipin Damodharan wins the 2024–25 Solutions Journalism Network Award for his story on Kerala’s community-led solar energy model.

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Dipin Damodharan wins international solutions journalism award
Image credit/EdPublica

EdPublica has received another international recognition after its Editor-in-Chief, Dipin Damodharan, won a 2024–25 Solutions Journalism Network Award for his reporting on Kerala’s renewable energy transition, published on EdPublica.com.

Dipin Damodharan has won the Second-Place Prize in the “Best of Solutions Journalism in News Articles (Small Newsroom)” category at the 2024-25 Solutions Journalism Network (SJN) Awards for his story, “Why Kerala Has Struggled to Replicate Perinjanam’s Solar Success.”

The award recognises impactful journalism that highlights credible responses to pressing social challenges. Dipin’s story examined the community-driven rooftop solar initiative in Perinjanam village in Kerala and explored the structural, financial, and policy challenges that have limited the replication of the model across the state.

The winners were selected by a panel of over four dozen international judges from around the world.

Describing this year’s award-winning entries, the Solutions Journalism Network said they “span issue areas and media formats. They come from around the globe, from outlets large and small. And most importantly, they represent an entirely different way of understanding news — not as a mechanism mainly for chronicling the world’s woes but also as a window into people’s creativity and resilience in trying to address them.”

The Solutions Journalism Network, a US-based organisation, is considered one of the world’s leading institutions promoting solutions-oriented reporting and constructive public-interest journalism.

The story was produced as part of the Earth Journalism Network (EJN) fellowship on renewable energy reporting. Through extensive field reporting, the article documented how a local community-led renewable energy initiative evolved into a successful decentralized solar model while also examining the gaps that continue to hinder broader adoption.

The SJN Awards honour journalism that combines rigorous reporting with an examination of responses to social, environmental, and governance challenges.

Dipin Damodharan is a journalist based in India and the Editor-in-Chief of EdPublica, an independent global media platform focusing on science, environment, education, and public-interest journalism.

The official announcement was published by the Solutions Journalism Network on its website.

Click here to read the award winning story.

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Climate

Why Humid Heat Is Becoming India’s Most Dangerous Climate Threat

From menopausal women and taxi drivers to surfing instructors, rising humidity is making heat harder to escape—even indoors.

Vaishnavi V S

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Woman holding a child and offering water during hot weather on a city street, illustrating the human impacts of extreme heat and humidity in India.
A woman gives water to a child on a hot day. Rising temperatures and humidity are increasing the risk of heat-related illness across the world, particularly among vulnerable populations. Image credit:Nahmad Hassan/Pexels

Humid Heat in India is emerging as a growing public health threat. Through data, expert insights and lived experiences from across the country, EdPublica explores how rising heat and humidity are making everyday life increasingly difficult for millions of Indians.

By 9 a.m., Radha, a 55-year-old office worker from Kottayam in the southern Indian state of Kerala, is already drenched in sweat as she waits for her bus. By noon, waves of heat, anxiety and discomfort begin to set in. Menopause had already brought frequent hot flashes, she says, but rising temperatures and humidity have made them harder to endure.

For Radha, relief no longer comes easily. Even routine tasks feel more exhausting than they once did. Her experience reflects a growing reality across India and much of the world: climate change is not only making the planet hotter, it is making heat harder for the human body to bear.

Humid Heat in India Taking a Growing Toll

When high temperatures combine with high humidity, the body struggles to cool itself through sweating, its primary cooling mechanism. As moisture in the air increases, sweat evaporates less efficiently, causing heat to build up inside the body.

A recent analysis by Climate Central found that dangerous humid heat days have more than doubled globally since the 1970s. The average number of dangerous humid heat days has risen from around 10 days per year to 23 days annually.

Alarmingly, climate change is now responsible for nearly two-thirds of these dangerous humid heat days. The consequences are increasingly visible. A study examining mortality linked to extreme heat events since 2000 estimates that more than 260,000 people have died from heat-related hazards worldwide.

Globally, climate change is now responsible for six times as many dangerous humid heat days each year as it was in the 1970s, underscoring how rapidly the risk has intensified. In 2025 alone, the world experienced an average of 23 dangerous humid heat days. Climate Central estimates that 19 of those days, or 83 percent, were added by human-caused climate change.

“These findings show how profoundly climate change is reshaping our world,” said Kaitlyn Trudeau, Applied Climate Scientist at Climate Central. “Dangerous humid heat has gone from being an uncommon event to a defining feature of daily life in some regions, pushing conditions closer to the limits of what the human body can safely endure.” Climate Central’s analysis of 961 cities worldwide found that 69 percent, or 665 cities, are now experiencing significantly more dangerous humid heat days because of climate change. On average, these cities recorded 46 additional dangerous humid heat days each year during the last decade compared with a world without human-caused warming.

Researchers say the findings highlight how climate change is evolving from an environmental concern into a growing public health emergency, particularly in regions already struggling with heat exposure, limited access to cooling and inadequate health infrastructure.

What Is Humid Heat?

Scientists often use “wet-bulb temperature” to measure humid heat. The metric combines air temperature and humidity to estimate how effectively the human body can cool itself through sweating.

Climate Central defines wet-bulb temperatures of 25°C or higher as dangerous humid heat conditions. When humidity and temperature combine to push wet-bulb temperatures upward, the body’s natural cooling system becomes less effective.

In extreme conditions, the body can no longer regulate its temperature adequately, increasing the risk of heat exhaustion, heat stroke and even death.

Older adults, children, pregnant women and people with pre-existing health conditions face the greatest risks. High humidity can worsen cardiovascular stress, respiratory illnesses and other heat-related health complications.

“Dangerous humid heat has more than doubled since the 1970s. We’re already seeing the consequences play out in real time,” said Lisa Patel, Clinical Associate Professor of Pediatrics at Stanford Children’s Health and Executive Director of the Medical Society Consortium on Climate and Health.

“As a pediatrician, these numbers are a wake-up call. This kind of data is exactly the tool clinicians and public health officials need to anticipate where heat-related illness will strike and who is most at risk before people end up in the emergency room.”

How Humid Heat Is Affecting India

Humid Heat in India is already becoming visible in several cities, particularly along the country’s southern and eastern coasts.

According to Climate Central’s analysis, Tamil Nadu emerges as India’s most affected state. Tirunelveli experiences an average of 273 dangerous humid heat days annually, the highest among Indian cities. Chennai follows with 257 days, while Tiruchirappalli records 251. Vijayawada and Visakhapatnam in Andhra Pradesh, along with Kolkata and Mumbai, are also among India’s humid-heat hotspots.

The danger does not end when people move indoors.

A separate study by Climate Trends found that heat exposure frequently continues inside homes. Researchers monitored temperatures and humidity in 50 low- and middle-income households in Chennai between October 2025 and April 2026 and found that indoor temperatures regularly exceeded 32°C.

Some households experienced more than 5,700 hours above this threshold—equivalent to nearly eight months of continuous heat exposure. Most households recorded between 3,000 and 5,000 hours of such conditions.

The findings suggest that for many urban residents, especially those without access to air conditioning, relief from heat remains elusive even indoors.

Heat, Menopause and Everyday Life

For women such as Radha, humid heat can intensify already challenging health conditions.

The World Health Organization notes that hot flushes and night sweats are among the most common symptoms associated with menopause. These episodes involve sudden sensations of heat in the face, neck and chest, often accompanied by sweating, flushing, palpitations and discomfort.

Women who have undergone hysterectomy are known to experience more frequent and severe hot flushes. According to NFHS-5 data, nearly one in ten women aged 30 to 49 in some regions of India have undergone the procedure.

As temperatures and humidity rise, these symptoms can become even more difficult to manage, adding another layer to the health impacts of climate change that often goes overlooked.

A City Struggling to Cool Down

In Mumbai, 59-year-old driver Vikas says heat has become one of the city’s biggest challenges.

Water shortages are becoming more common, and even routine outdoor work is growing increasingly difficult.

“Sometimes people go to the beach at night just to find some relief from the heat. Even a brief spell of rain feels like a blessing now,” he says. “The problem is only going to get worse.”

Small businesses and street vendors operate along a busy lane in Dharavi, Mumbai, highlighting everyday life in a densely populated neighbourhood vulnerable to rising temperatures and humid heat in india
A street scene in Mumbai’s Dharavi. Residents in densely populated urban neighbourhoods often face prolonged exposure to heat and humidity, with limited access to cooling. Image: Dipin Damodharan/EdPublica

His observations echo broader climate trends in the Mumbai Metropolitan Region. Climate Central’s analysis shows that Mumbai experiences an average of 206 dangerous humid heat days annually, while nearby Dombivli and Thane record even higher numbers. The conditions he describes are reflected in current forecasts. Climate Central projected a daily high wet-bulb temperature of 25.6°C in Mumbai on June 23, a level considered dangerous humid heat.

Surfing Through a Hotter Coastline

Further south, the effects are also being felt along India’s coast.

Rajaguru, a surfing instructor in Puducherry, says summers are arriving earlier than before, often beginning in February instead of March.

“We go surfing early in the morning, but even then the heat feels much more intense than it used to,” he says. “Sunburns and skin rashes are becoming common. Summer arrives with extreme heat, while the monsoon season increasingly brings cyclones.”

He has also noticed rising sea temperatures and changes in water conditions that affect both tourism and outdoor activities.

For people whose livelihoods depend on spending long hours outdoors, humid heat is becoming more than an inconvenience—it is becoming an occupational hazard.

The Vulnerability Gap

These experiences reflect a larger challenge facing India. The impacts of Humid Heat in India are magnified by inequalities in access to cooling, housing and reliable electricity.

Between 1995 and 2024, the country experienced 430 extreme weather events, resulting in more than 80,000 deaths and economic losses exceeding USD 170 billion. Rapid urbanisation has intensified the urban heat island effect, making cities significantly hotter than surrounding rural areas.

The latest Climate Change in the Indian Mind survey found that 84 percent of Indians report experiencing the effects of global warming. Yet only 15 percent of households own an air conditioner and 27 percent have access to an air cooler.

Even for those with cooling systems, reliable electricity is not guaranteed. Around 66 percent of Indians experience power disruptions on a typical day, even as demand surges during heatwaves. On May 21, 2026, India’s peak electricity consumption reached a record 270 gigawatts.

Despite being the world’s third-largest emitter of carbon dioxide, India’s per-capita emissions remain relatively low, reflecting deep inequalities in energy consumption and access.

For millions of people, escaping extreme heat is simply not an option.

When the Air Stops Offering Relief

Dangerous Humid Heat in India is already reshaping how people live, work and survive. As temperatures and humidity continue to rise, the boundary between uncomfortable and life-threatening conditions is becoming increasingly thin.

For millions of Indians, the challenge is no longer adapting to hotter days. It is adapting to air that no longer offers relief. As humidity rises alongside temperatures, surviving heat may become as much about access to cooling and electricity as it is about climate itself.

The future of climate adaptation may begin not in policy documents or air-conditioned offices, but in homes, buses, streets and workplaces where the heat is already impossible to ignore.

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