Society
SpaceX prepares for the Great Filter – but why?
What’s Elon Musk’s gameplan to get humans to thrive in the universe all about?
Two weeks ago, Ed Publica did a news story on Elon Musk’s tweet. It sure was a headline topic in itself. “We are mapping out a game plan to get a million people to Mars,” posted Musk. “Civilization only passes the single-planet Great Filter when Mars can survive even if Earth supply ships stop coming.”
Press releases that came in the wake of the tweet, never did engage with Musk’s invocation of – the Great Filter – which as the astronomer Seth Shostak once stated, a ‘variant on the Fermi paradox’.
The Fermi paradox was borne out of an idea proposed by the enigmatic 20th century theoretical physicist, Enrico Fermi, who posed a profound, philosophical question: If an intelligent civilization were capable of space travel, and extraterrestrial life existed, then where are they?
The question itself was a paradoxical idea. Either of course, aliens don’t exist – or if they do, then they’re hiding in plain sight, not wanting to be contacted. Perhaps in the latter case, aliens want to avoid being colonized or wiped extinct by a civilization with superior technology. No one knows what the answer is. We don’t know yet if it even is a paradox with an answer.
But the Great Filter theory, proposed by an economist, Robin Hanson in 1998 makes an interesting argument that offers a possible resolution against the Fermi paradox. Maybe life is uncommon, or can easily go extinct. There can be some factors at play to stop a civilization from thriving and spawn a population to safeguard it.
Maybe humanity’s destined to live, and then die on earth – only to live on Mars, until every resource exhausts and human genes are ferried to distant exoplanets to hopefully spawn and recreate humanity there. Or perhaps humanity’s alone amongst the trillions of stars in the universe, because someone has to make the first step to show how difficult it is for life to thrive.

Credit: Greg Rakozy / Unsplash
How feasible is this?
Musk’s prophetic vision is more his vision for humanity – reminiscent in science fiction novels and films.
There’s a line from the movie Interstellar (2014), when Michael Caine, playing an astrophysicist, says, ‘We’re not meant to save the world, we’re meant to leave it.’ In the movie, earth gets plagued by crop blight, and people starve to death when food resources are hard to sustain. Although the problem was foreseeable, we were too late to act on it. And that was the main driver of the plot. Astronauts were dispatched into a wormhole and tunnel through into a different galaxy light years away. Humanity was doomed, and so the astronauts prepared human embryos to take our place and be the Adam and Eves of their species.
The Great Filter and the Fermi paradox are at best a useful thinking exercise about the myriad ways human imagination really works.
Musk’s idea to colonize Mars makes some sense in that it’s about taking a small step to demonstrate we can demonstrate a necessary first step of survival.
But then space is cruel and indifferent. The Martian atmosphere is completely thin, with almost zero atmospheric pressure. It’s not even about the carbon dioxide in what’s left in that atmosphere – there’s just barely any atmosphere there. Musk probably is aware of this, given he has a physics background!
For instance, how do we pressurize a whole planet? The optimism is that technology can circumvent these problems.
This technology, possibly in a few decades, can seem like ‘magic’ to us. The Great Filter and the Fermi paradox are at best a useful thinking exercise about the myriad ways human imagination really works.
And until we demonstrate basic physics that works in its favor, aren’t these just wishful fantasies?
For instance, how can SpaceX ‘gameplan’ Mars’ colonization, if the company doesn’t itself survive the Great Filter test? Who else in the world is taking this seriously apart from Elon Musk?
‘Colonizing’ space
Musk’s gameplan invites more questions, since there’s barely any discussion that he leads on it.
Musk is polarizing to his critics, who question the need for expensive space exploration programs that have no direct benefit on our economy.
Musk’s usage of the term ‘colonization’ can be seen to resonate with the sentiment in the 15th century when the West discovered the rest of the world through the sea-route. However, it didn’t fare well for the rest of the world. One notable example is when Christopher Columbus, ‘discovered’ North America, when he was in search of India – he and his men began the subjugation of Native Americans.

An 1850 painting depicting Christopher Columbus (center) surrounded by people, before embarking a ship in August 1492. Credit: Wellcome Trust
Meanwhile, the Portuguese voyager Vasco da Gama arrived at the shores of India, in Kozhikode. That opened up routes for vessels of the East India Company from across Europe to trade – and then colonize Indians.
I’m not suggesting Musk has nefarious plans at play. However, what’s the chance that future government policies somehow get blindsided, or ignorant of advice from experts outside science on the political implications of space exploration?
And what better ‘gameplan’ can there really be if it starts with experts from a diversity of fields huddling together for an enlightening discussion?
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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