Society
Why mother language-based science education is essential
All people are touched by science; shouldn’t that be universally understood? Shouldn’t everyone take part in this?
EdPublica looks into the importance of mother language-based science education in the context of International Mother Language Day on February 21. We believe that the global fabric of linguistic diversity is facing a growing threat with the rapid disappearance of numerous languages over time.
Science is not democratic; it is an elitist activity…an Indian theoretical physicist once said. He means that science is not that democratic, so everyone does not need to learn, only the elite should learn. Does it make sense? All people are touched by science; shouldn’t that be universally understood? Shouldn’t everyone take part in this?
It should, but one big barrier is the language itself. Further democratising science education in the mother tongue will make this difficult topic more accessible to all.
The setting was a typical English-medium school in a rural village in the South Indian state of Kerala. The teacher seemed to be taking classes for 6th or 7th graders. She was reading the book in English without missing a single line. The teacher was very excited. However, the children’s body language did not show much enthusiasm. Many students’ expressions were just filled with a sense that they had heard something. The class was about light or something. The subject of the school visit was different, but I just talked to one or two of the children about what they were learning.

One has nothing to say about the rays of light taught by the teacher. They did not like any questions about what was said in class. A boy named Thomas (name changed) said, ‘Oh, I can’t understand any class in English, bro’.
It was a reality that most subjects taught in English were beyond the comprehension of the students there. Then the question is how to pass the examinations. “It’s a matter of just memorising and writing,” replied one of the boys. It was then that I remembered about the discussions of primary education, especially science education, in indigenous languages. Many children who pass with great marks in subjects including science have no understanding of basic science concepts. Those who are not good at memory are quickly labelled as dumb and will be marginalised in schools. This is not an isolated case but a common ‘phenomenon’ in third-world and developing countries where English is not the main language.
So, the question is: If you don’t understand, how can you learn?
The situation is deplorable if we consider how little practice there is in teaching science concepts in the mother language, particularly concerning children’s daily lives. Language is one of the main reasons why children don’t have a scientific approach to anything when they grow up.
India’s former President and eminent scientist, Dr. A P J Abdul Kalam, was once interacting with students at Dharampeeth Science College, Nagpur. The incident happened in 2011 or so. He encountered a question about how science learning can be made more creative. This was his answer: For a quick grasp of science-related concepts and greater creativity, teach children science in their mother language.

The same was repeated by Indian Prime Minister Narendra Modi in January 2018. The Prime Minister said that children should be taught science in their native languages. But how much the country is still succeeding in that is questionable. It is a relief that the new National Education Policy of India is all in that direction, but the fundamental change needs to come in the mindset of parents and teachers.
What do studies say?
UNESCO’s Global Monitoring Report (GMR) published a landmark study five years ago. It was released on February 21, International Mother Language Day. The study pointed out that providing primary education in a language other than their own can significantly affect the learning process of children.
French is the main language in many West African schools. It is an unfamiliar language to its children. “Naturally, their learning becomes difficult on many levels,” states UNESCO’s policy paper.
As the then UNESCO GMR Director Aaron Benavot told this writer regarding the report, “40 percent of the world’s population does not have access to education in a language they speak or understand. Studying in a non-spoken language regularly sets a student back academically. It affects children from low-income families very deeply.”
UNESCO’s report points out that if children understand the medium of learning, their learning will improve. French is the main language in many West African schools. It is an unfamiliar language to its children. “Naturally, their learning becomes difficult on many levels,” states UNESCO’s policy paper. “Language and ethnicity can combine to produce complex patterns of compounded disadvantage. In Peru, the difference in test scores between indigenous and non-indigenous children in grade 2 is sizeable and increasing.”
Why the bilingual model matters
UNESCO states that children have reached better standards in countries where bilingual programmes have been implemented in the education system. By making learning in their mother tongue possible, children can score better in all subjects. Experts such as Aaron Benavot point to Guatemalan and Ethiopian case studies as proof of this. UNESCO studies say that promoting bilingual education is the best way, even if it is a bit expensive. A bilingual education programme with an emphasis on the mother tongue can make a big difference, although it will create complications in matters including teacher recruitment.
At the same time, just because the study is in the mother language does not necessarily mean that the children will have better scientific aptitude. On the other hand, if science is taught in the mother tongue, the chances of gaining expertise in science are very high. This is mentioned in the new education policy of India. The National Education Policy calls for the use of the local language as the medium of study up to grade 5.

Moreover, such a change is essential for the democratisation of science. Celebrated Indian physicist C V Raman once said that science should be taught in the mother tongue if science is not to be confined to the activities of the elite. Science should be accessible to all. Every human life is related to science. If they want to understand it, science must come to them in a language they know.
Our transition must be to schools that teach science in the language that children speak, beyond mere theories, and relate them to their lives on a practical level. Studies have shown that children become more empowered and confident when they learn in their own language. Because the mother tongue is also related to each person’s sense of identity.
Mother Language Day 2024
UNESCO has put forward a theme for International Mother Language Day celebration 2024 – “Multilingual education is a pillar of intergenerational learning”. Currently, 763 million adults lack basic literacy abilities, and 250 million children and young people do not attend school. UNESCO states that multilingual education is a key component of quality learning, and mother tongue education supports learning, literacy and the acquisition of additional languages.
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.
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.

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.
Society
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.
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.
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.
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.”

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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