
Pint of Science festival: Are all snakes venomous? How do vaccines work? Researchers decode these questions — at a pub in Delhi
Scientists and researchers demystified these questions and more — not in a classroom or a seminar hall, but at Fort City Brew pub in Delhi's Hauz Khas market on Monday evening.
The event is part of the Pint of Science festival, which has come to India for the first time.
Originating in the UK in 2013, the non-profit global festival, organised by a grass-root community of thousands of scientists, soon spread to more than 500 cities in 27 countries. Topics ranging from atoms and galaxies to gene editing and quantum mechanics are de-mystified.
At the pub in Delhi, wide-eyed science enthusiasts watch as independent researcher Peeyush Sekhsaria starts the festival with a game of bingo — but with a twist.
Each player gets a card with 9 species of flora and fauna which are prevalent in and around the Thar desert. If the players have the species that Sekhsaria names, they place a pawn on top of the picture of the animal or plant. The first player to get a full house wins a reward.
Before Sekhsaria takes out a placard of the species, he gives players clues and explains the localised myths surrounding them. Hyenas, he points out are frequently regarded as vermin by local communities.
Another game he displays before the erudite audience is 'Snake-a-doo'. It's the conventional snakes and ladders but with options such as 'Got bitten by a snake, went to a baba and lost time', 'you tried to kill a snake, it's a crime,' and 'yay, not venomous'. The names of snakes are given along with what action to take in case one gets bitten by them.
'These games are part of a bigger project. We're working on snakebite mitigation and creating awareness among village communities,' he says.
Annually, there are close to 60,000 snakebite deaths in the country (80% of the global deaths). Close to 9 in 10 of these deaths are caused by just four snake species.
Along with dispelling myths and superstitions, his games have also transformed the way villagers think. 'Earlier, all snakes were saap and had to be 'killed'. Now, people have started differentiating between venomous and non venomous snakes,' he adds.
Identification of networks of villages which are better equipped to deal with snakebites, connecting with local teachers and interviewing snake bite survivors are all a part of the project.
The next speaker was K Mohan Reddy, a PhD student from Ashoka University who is working on how the 'memory' of our cells helps in gaining immunity against viruses and how vaccines work.
Unpacking the fascinating world of immune memory, and how vaccines train our cells, his interactive session with quizzes grips the audience.
'Vaccines mimic the infection and that's how the immune cells in our body prepare themselves against the actual pathogen,' he says.
He also speaks about herd immunity — 'what percentage of population should be vaccinated to achieve herd immunity is where the current research is at', he adds.
Immune memory is the ability of our body to fight against the infections, Reddy points out. 'Not enough studies are done on immune memory persistence in the Indian population… That's exactly what we're trying to achieve,' he adds.
He next explains the concept of T cells and B cells. While the former attacks infected cells, the latter attacks invaders (or viruses) outside the cells.
Reddy also speaks about how flow cytometry – a technique used to detect and measure the physical and chemical characteristics of cells – helps in identifying immune memory cells.
The festival is being held from May 19 to May 21 at Delhi, Pune and Bengaluru.

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The Hindu
11-07-2025
- The Hindu
From Rabindranath Tagore to Satyajit Ray, meet the secret green revolutionaries
The title of Sumana Roy's book Plant Thinkers of Twentieth-Century Bengal makes one wonder what it means to be a 'plant thinker' and who might be called one. An Associate Professor of Creative Writing at Ashoka University, she writes about 'revolutionaries who created a plant poetics that secretly changed the way a people would imagine and live with plants'. Their non-violent revolution seeks to challenge the dominant worldview. The volume is divided into seven chapters. Six of them are about public figures like Jagadish Chandra Bose, Rabindranath Tagore, Bibhutibhushan Bandyopadhyay, Jibanananda Das, Shakti Chattopadhyay, and Satyajit Ray. The last is about a domestic worker, Maya-mashi, personally known to the author. Though none of them were professional environmentalists, what they have in common is a 'vocabulary of intimacy and cohabitation with plant life'. Plant Thinkers of Twentieth-Century Bengal Sumana Roy Oxford University Press ₹1,100 If you are a Roy fan who enjoyed How I Became a Tree: Dispatches from a World on Fire (2017) and Provincials: Postcards from the Peripheries (2024), her latest would be a worthy addition to your bookshelf. She returns to abiding preoccupations with renewed vigour. Her disenchantment with the capitalist, anthropocentric mode of engagement with plant life is on full display here, as is the joy of re-discovering people from the past who share her concerns. Unlike the previous books that were more autobiographical and inward-looking, this one is more intent on contributing to a fledgling discipline called 'plant humanities'. The vocabulary is not technical but the writing style is geared towards a scholarly audience. Roy has been working on the Indian Plant Humanities project with the Centre for Climate Change and Sustainability at Ashoka University, so this should not come as a big surprise. 'Natural cosmopolitanism' The first six chapters combine biographical sketches of the thinkers along with discussions of their work. The one on Bose — a scientist and a science fiction writer — is about 'his desperation to prove the legitimacy of plants as citizens in the country of the living' whereas the one on poet-artist-playwright Tagore revolves around 'the natural cosmopolitanism' of the forest that he meant to recreate in Santiniketan, an educational experiment in Bolpur. The third chapter shows how Bandyopadhyay, the novelist who moved from Bengal to Bihar to work as an assistant manager at an agricultural estate, recognised his own complicity as a 'coloniser' in destroying the forest and turning the forest into profit-making agricultural land. The chapter on poet-essayist-novelist Das frames him as a chronicler of 'the botanical history of provincial Bengal' while the one on Chattopadhyay looks at him as a poet whose affection for rustic life comes from his childhood experiences in a village where he lived with his maternal grandfather who was a teacher and homoeopath. The world of Apu Roy draws attention to the recurring figure of the botanist in Ray's stories. She notes that, unlike Apu in Ray's film Pather Panchali who grew up in the countryside, 'little Satyajit' was raised in the city uninitiated into the mysteries of the plant kingdom. However, childhood vacations were spent with an aunt and uncle in Darbhanga with easy access to trees. Roy does a terrific job of highlighting their contributions. However, she is more descriptive than analytical and seems reluctant to approach the work of these personalities with a critical lens. The flow of her writing is disrupted by large chunks of quotes from primary sources. The last chapter, though beautifully penned, comes across as an afterthought. It seems that Roy's championing of a domestic worker who expressed herself in botanical idioms and proverbs is meant to address the absences in the first six chapters. She notes that Bose, Tagore, Bandyopadhyay, Das and Ray 'came from families with strong connections to the Brahmo Samaj', so the Upanishadic way of thinking and living was ingrained in their understanding of their own place in the world as well as their approach to plant life. Chattopadhyay and Bandyopadhyay's fathers, she remarks, 'came from similar intellectual histories — Sanskrit teaching, classical literatures, the Brahminical background'. However, Roy does not explore how 'a naturalised understanding of a multispecies universe where everyone and everything was a citizen' seems incompatible with the oppressive caste system. It is surprising that writer and activist Mahasweta Devi does not get a whole chapter but just a few lines in a paragraph on 'the botanical imagination among Satyajit Ray's contemporaries in Bangla literature'. Hopefully, future editions of the book will fill this gap. The reviewer is a journalist, educator and literary critic.


The Hindu
03-07-2025
- The Hindu
How did Indian universities fare on the QS ranking list?
The story so far: For the first time, in the international ranking of universities published by Quacquarelli Symonds (QS), a company specialising in higher education analysis based in the U.K., Indian universities have more than 50 spots in the top 1,500. The highest rank among Indian universities goes to IIT Delhi (Rank 123), closely followed by IIT Bombay, IIT Madras, IIT Kharagpur and IISc Bengaluru. This number has increased from 11 in 2015 to 54 in 2026, with eight universities, including Ashoka University in Haryana and Shiv Nadar Institute of Eminence in Greater Noida, getting featured for the first time. What are the parameters? The 2026 ranking is based on a whole range of parameters which include the learning environment on campus, academic reputation (30%), impactful research (citations for research papers count for 20%, and international research network 5%), diversity (student diversity, international faculty and students count for 10%), student outcomes (employer reputation counts for 15%, while student placements 5%) and campus sustainability (5%). Has higher education improved? These rankings reflect how Indian universities are increasingly adapting to the norms followed by universities worldwide, and are thus becoming comparable to international universities. For instance, the average undergraduate student to faculty ratio in Indian universities is 19. In order to be internationally competitive, this number needs to be between 10-15. At Ashoka University, for instance, over the last year for about 3,000 undergraduates, the ratio was 11.5. These undergraduates come from 20 countries, which enhances the score for international diversity. Most universities in India have few international students, and most public universities cannot employ international faculty, which results in low scores in these categories. Moreover, over the last few decades, Indian universities have not put much emphasis on original research carried out by faculty and students. For STEM subjects especially, the research is traditionally done in research institutes. This is in sharp contrast to global practices, as universities are the primary institutions where creation of knowledge takes place, in addition to its transmission to students, worldwide. However, this is now changing. More and more universities, particularly IITs/IISERs and new private sector universities, are paying particular attention to research. With the advent of the National Education Plan, 2020 (NEP), which emphasises on research in universities, more and more Indian institutions will take their place on international ranking lists. Public universities used to pay very little attention to the employment opportunities of students, but professional institutes such as the IITs and IIMs have always had placement cells and employers' fairs. Now, even for large central universities, this is an important consideration. All this is crucial to international ranking lists such as the QS. How can universities fare better? As more and more universities begin to build research networks across the world, and hire quality faculty who can do research along with the necessary teaching of students, we will see the rise of Indian universities in these ranking lists. India needs to encourage international students and faculty to become part of its educational institutions and to closely work with industry in identifying potential employment destinations for students. Particular attention to environmental aspects and sustainability in campuses will also earn points for universities aspiring to be among the top educational institutions. Somak Raychaudhury is Vice-Chancellor and Professor of Physics, Ashoka University, Delhi-NCR. All opinions are personal.
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Business Standard
22-06-2025
- Business Standard
Dark energy discovery changed understanding of universe: Nobel laureate
Dark matter pulls the universe and dark energy pushes, both mysteries that endure. And the discovery that a majority of the universe is made up of stuff that makes gravity push rather than pull was a gamechanger, says Nobel laureate Brian Schmidt. The US-born Australian astronomer along with Adam Riess and Saul Perlmutter from the US discovered the stuff, later termed dark energy, in 1998. The three won the Nobel Prize for Physics in 2011. Explaining the significance of their discovery that changed the understanding of how the universe functions, Schmidt told PTI, "Dark energy is really saying (that) there is energy tied to space itself. If we didn't have dark energy, the universe would be curved and the universe wouldn't accelerate -- and that changes how cosmic objects, such as galaxies, looks. It really makes a difference," the astronomer, who was visiting Ashoka University for the Lodha Genius Programme, added. The term dark energy is intentionally similar to dark matter. Dark matter refers to particles in the universe that hold galaxies and other structures in space (the cosmos) together. It is said to have peculiar properties, such as being invisible, as it does not interact with light. However, while "dark matter and atoms (that make up ordinary matter) are pulling the universe, dark energy is pushing the universe. There's a balance at any given time of who's winning the war -- dark energy has won the war, it seems now and is pushing the universe apart", Schmidt explained. That's because dark energy had a density set at the time of the Big Bang, said the 58-year-old former president of the Australian National University and currently a distinguished professor of astronomy. The Big Bang, believed to have given birth to the universe, happened some 13.8 billion years ago. Dark matter is among the particles formed immediately after the event, gravity exerted from which is said to produce a slowing effect on the universe's evolution. "And (dark energy) stayed at that density. But as the universe expanded, and the density of atoms and dark matter dropped over time, the two crossed about 6.5 billion years back -- and that crossing meant the dark energy could take over and accelerate the universe," Schmidt said. Work on the discovery that the universe is expanding at an accelerating rate and that dark energy is the driving force began in 1994. Schmidt and colleagues intended to look at distant objects and measure how fast the universe was expanding in the past, and then look at nearer objects to see how it slowed down over time. "And if we measured the universe slowing down really quickly, then we'd know that the universe was heavy and you're gonna get a Gnab Gib -- the Big Bang in reverse. But if the universe was slowing down slowly, then we'd know the universe is light and it's gonna exist forever. So that's what we were going to do." Three and a half years later came the answer. What we saw was the universe was expanding slower in the past and it sped up. So instead of slowing down, it's actually the other way -- it's speeding up," the Nobel laureate said. In 1917, physicist Albert Einstein first imagined dark energy as a concept -- only he did not think of it in those exact words but instead accounted for it in his equations of general relativity as a 'lambda' term. Einstein is said to have considered the lambda term irrelevant, even denouncing it as his greatest blunder. "When we made our discovery of the acceleration (of the universe), it was the only sensible way of making it happen. So that thing (the lambda term), that he (Einstein) brought in 1917 and then later discarded as being irrelevant, that seems to (be validated from) what we discovered," Schmidt continued. "In 1998, cosmology was shaken at its foundations as two research teams presented their findings...," states the press release dated October 4, 2011, announcing the recipients for the Nobel Prize in Physics for 2011. The 1998 model has since been scrutinised through experiments, mainly aimed at understanding the nature of dark energy -- is it constant or does it vary? "We put in some extra knobs in the model of 1998, where we allow dark energy to change over time. The models with the most recent data seem to prefer a dark energy that changes," Schmidt said. But he is sceptical. "I'm not saying they're wrong. I'm saying I need better data to be convinced they're right. He said he is also glad that someone else is working on it. Schmidt leads the 'SkyMapper Telescope Project' for which he conducted a survey of the southern sky as seen from Australia, focussed on looking at the "oldest, first stars in the galaxy". "We could see essentially what the chemistry of the universe was back really close to the Big Bang -- because if a star was formed right after the Big Bang, it's made up of the stuff that was in the universe at the time. "And so, we found the most chemically pure stars that have ever been discovered, ones that were almost certainly not formed from the remnants of the Big Bang, but from a single exploding star after the Big Bang. That just gives us a sense of what the first stars look like," said Schmidt, who has published his findings in several journals, including Nature. Schmidt, who addressed high schoolers and others on science as a potential career at the university, advised them to get the skills that seem useful for life by working on something that interests them. Not knowing what to do in life and the fact that he enjoyed astronomy made Schmidt pursue the field. "In learning astronomy, I'd learned math, I'd learned physics, I'd learned computing, I'd learned some engineering. And (while) I didn't think it was likely that I would get a job to be an astronomer, I knew math, engineering, physics, and computing liable to give me a good job doing something. And of course, I did end up being an astronomer," he said. "You don't really know how all of this is going to come together in your life, but if you work on something you're interested in, with a set of skills that seem useful for life, then don't overthink your life, don't overplan your life," Schmidt said.