science – Artifex.News https://artifex.news Stay Connected. Stay Informed. Sun, 29 Mar 2026 13:55:00 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://artifex.news/wp-content/uploads/2026/05/cropped-cropped-app-logo-32x32.png science – Artifex.News https://artifex.news 32 32 Reclaiming India’s fragrance heritage — why a name matters https://artifex.news/article70643069-ece/ Sun, 29 Mar 2026 13:55:00 +0000 https://artifex.news/article70643069-ece/ Read More “Reclaiming India’s fragrance heritage — why a name matters” »

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India’s relationship with fragrance is ancient, intimate, and profoundly sophisticated. Long before perfume became a global industry, long before it was bottled, branded, advertised, and sold in department stores, fragrance in India was understood as a lived technology-deeply embedded in medicine, ritual, daily grooming, aesthetics, seasonal rhythms, and even spiritual practice.

Scent was never merely an accessory or ornament; it was a presence, carefully woven into how people related to their own bodies, their immediate surroundings, the natural environment, and the sacred.

Aromatic substances played essential roles in Ayurvedic healing systems, temple worship, royal court culture, seasonal festivals, wedding ceremonies, mourning rites, and personal hygiene routines. This reflects a civilization that recognised fragrance not just as pleasure, but as function, symbolism, science, emotional medicine, and a bridge between the material and the metaphysical.

Yet today, despite possessing one of the world’s oldest and most refined perfume traditions, India accounts for only a marginal share of its own indigenous fragrance usage. Less than 5% of the perfumes currently used across the country belong to the traditional oil-based perfume system commonly referred to as attar.

This disconnect between historical origin and contemporary relevance is not simply a matter of changing consumer tastes, globalisation, or the arrival of modern trends. It represents a deeper, multi-layered erosion involving language, colonial influence, market restructuring, loss of institutional patronage, disruption of artisanal lineages, and the gradual collapse of quality standards that once defined India’s perfumery excellence.

Ancient roots

To truly understand how this erosion occurred, one must return to India’s proper historical position in the global story of fragrance. Archaeological and scholarly interpretations suggest that as early as 3500 BCE, during the mature phase of the Indus Valley Civilisation, the subcontinent was already experimenting with rudimentary forms of distillation and controlled aromatic extraction. Excavations across major Harappan sites-such as Lothal, Dholavira, and Mohenjo-daro-reveal a remarkable degree of precision in ceramic manufacture, metallurgy, thermal processing, kiln technology, and material science. These are exactly the skills essential for systematic aromatic work. Vessels designed to heat plant material, channel vapour, and condense aromatic liquids point to an early understanding of extraction principles that would later evolve into highly sophisticated perfumery technologies.

This was not an accidental or isolated discovery. It resulted from sustained empirical observation, trial-and-error refinement, and intergenerational transmission of knowledge, fully integrated into daily life, medical practice, and ritual contexts. While direct chemical identification of fragrance residues from Harappan contexts remains limited due to preservation challenges, the presence of trade networks extending to Mesopotamia, the botanical remains of aromatic plants, and the clear continuity with later Indian knowledge systems strongly support this interpretation.

In ancient and classical India, fragrance was never treated as a frivolous luxury. It occupied a central place in Ayurveda, ritual purification, emotional regulation, seasonal medicine, and daily grooming. Classical texts described aromatic substances as powerful therapeutic agents capable of influencing both physical doshas and psychological states-calming the mind, lifting mood, aiding digestion, supporting sleep, and even balancing subtle energies. Indian knowledge systems also developed a precise, layered, and remarkably consistent vocabulary around aromatic science: gandha (scent as sensory property), sugandha (pleasant fragrance), taila (oils serving as carriers and fixatives), rasa (essence or extractive principle), and arka (distillates obtained through controlled heating and condensation). This linguistic precision was not poetic flourish-it reflected a structured, scientific understanding of fragrance chemistry, extraction processes, material behaviour, and therapeutic application.

These conceptual foundations were further elaborated in major classical works such as the Bṛhat Saṃhitā of Varāhamihira (6th century CE), which treated Gandhayukti-the applied discipline of fragrance formulation, blending, maturation, storage, and contextual use-as a serious branch of knowledge. Gandhayukti considered seasonality, climate, geography, purpose (ritual, medicinal, cosmetic), and even astrological timing, demonstrating how deeply fragrance was integrated into broader scientific, cultural, and civilizational reasoning.

Technological mastery

Over the centuries, these conceptual foundations translated into extraordinary technological refinement. By the early medieval period, India had perfected the deg-bhapka hydro-distillation system-one of the most elegant, climate-intelligent, and materially sophisticated methods ever developed for fragrance extraction. The apparatus consists of a copper deg (heating vessel) in which plant material and water are gently heated, with aromatic vapour passing through a conduit (usually bamboo or metal) into a receiving vessel called the bhapka, which contains a lipid carrier-most classically sandalwood oil. Multiple cycles of slow, controlled heating allow the volatile aromatic compounds to migrate into the oil, enriching it progressively while preserving delicate molecules that would be destroyed or altered by harsher, high-temperature methods.

The resulting perfumes were intimate, exceptionally long-lasting (frequently 8–12+ hours on skin), and highly stable in hot and humid tropical climates. They were deliberately designed not for loud projection across rooms, but for slow, harmonious unfolding directly on the skin-releasing fragrance gradually, layer by layer, in a quiet, personal radius. The deg-bhapka system is a beautiful example of tacit technological knowledge: deep understanding of phase change, selective solubility, vapour pressure, thermal control, lipid protection, and the antimicrobial properties of copper-all integrated into a single artisanal workflow.

Transmission westward

Between the sixth and eighth centuries CE, Indian aromatic knowledge travelled westward through Persia into the Arab world. Persia acted as a crucial cultural and intellectual bridge, absorbing, translating, and systematising Indian techniques while adding its own refinements in apparatus design and scholarly documentation. Within the Arab scholarly tradition, fragrance science was documented extensively in Arabic-the dominant global language of science during that era. It was in this rich intellectual environment that the term ʿiṭr (meaning simply “fragrance”) emerged and gained wide currency. Importantly, the technology preceded the terminology; the word followed the practice rather than creating it.

When Europe later encountered advanced perfumery knowledge between the eighth and twelfth centuries, it did so largely through Arabic texts translated into Latin, often via Islamic Spain (Al-Andalus) and Mediterranean trade networks. What Europe received was already the product of centuries of Indian and Persian refinement. However, by the fourteenth century, Europe introduced a decisive material innovation: the widespread adoption of high-proof ethanol as a fragrance carrier. This gave birth to modern alcohol-based perfumery, enabling rapid evaporation, strong airborne diffusion (sillage), and large-scale industrial standardisation. The new system suited Europe’s colder climate, enclosed indoor social practices, and emerging commercial and capitalist structures.

This moment did not mark the evolution of a superior system; it marked the divergence of two parallel technological architectures, each optimised for its own ecological and social context.

Return to India

Around 1000–1500 CE, during the Persianate and later Mughal periods, the word attar returned to India through elite court culture. This return is frequently misunderstood as the introduction of perfumery itself. In reality, it represented a lexical and prestige shift rather than a technological one. India already possessed a mature, indigenous oil-based perfume science; the term attar simply gained Persian linguistic prestige in royal, aristocratic, and urban elite settings. For centuries thereafter, attars in India remained refined natural distillates, highly valued for their depth, subtlety, complexity, and extraordinary staying power.

Colonial rupture

The true rupture came much later with colonialism. European grooming norms were actively promoted as symbols of modernity, professionalism, civilizational advancement, and social mobility. Alcohol-based perfumes-easily mass-produced, packaged, advertised, and distributed through colonial trade networks-aligned perfectly with the new economic and cultural order. Oil-based perfumes, being artisanal, locally rooted, labour-intensive, climate-specific, and resistant to industrial scaling, were gradually marginalised and pushed into informal, local markets.

As institutional patronage collapsed and colonial education systems devalued indigenous knowledge, something even more damaging occurred. The term attar in India slowly became a catch-all label applied indiscriminately to everything-from exquisite botanical distillates produced through traditional deg-bhapka methods to cheap synthetic oil blends, compounded products containing only traces of naturals, and even completely undefined non-spray fragrances. Quality standards eroded dramatically, consistency disappeared, adulteration became widespread, and consumer trust collapsed. The word lost its technical meaning. It no longer reliably conveyed method, material integrity, authenticity, or expected performance.

In India today, attar has come to represent a highly heterogeneous group of products-ranging from exquisite natural distillates to synthetic oil blends-making the term unreliable as a marker of quality or method.

The problem today

This is why the problem today is not oil-based perfumery itself. It is the profound semantic and market collapse surrounding the word attar within the Indian context. The same breakdown has not occurred everywhere. In West Asia, oil-based perfumery remains institutionally supported, culturally celebrated, and commercially thriving. There, attar continues to represent a respected, clearly defined category with strong quality expectations and consumer literacy. Nearly 40% of the fragrance market in many Middle Eastern countries belongs to oil-based perfumes, valued for craftsmanship, longevity, and perfect suitability to warm climates.

The contrast reveals a crucial truth: oil-based perfume is not outdated or inferior. Where systems of quality assurance, consumer education, cultural branding, and institutional continuity remained intact, the category flourished. Where colonial disruption and post-colonial market distortions dismantled those systems, the category fragmented.

From a scientific perspective, oil-based perfumes remain remarkably intelligent fragrance delivery systems. They bind gently to skin lipids, release aromatic molecules slowly and steadily, resist rapid oxidation, and persist far longer in warm, humid environments. Their perceived “heaviness” often arises from misuse-people apply them in large, spray-like quantities instead of the intended micro-dosing (a single drop or two). Alcohol perfumes offer immediacy and spatial diffusion; oil perfumes offer continuity, intimacy, climatic resilience, and layered evolution over hours. Both are technologically valid when properly understood and used.

The case for JWALE

This brings us to the central issue: naming and categorisation.

The call today is not to erase the word attar globally, nor to interfere with West Asian markets where it functions clearly and successfully. It is not to deny history or reject tradition. The call is to recognise that in India, the word has become functionally compromised—unable to serve as a reliable signal of quality, method, authenticity, or performance.

Revival therefore requires a new, criteria-bound category name that accurately represents India’s indigenous oil-based perfume technology and restores clarity for modern consumers, artisans, scientists, regulators, and future generations.

For this reason, I propose a contemporary Indian term: “JWALE”.

Derived from the Indic root ‘jval’, meaning “to glow,” JWALE captures the defining character of Indian oil-based perfumes. These fragrances do not shout or project aggressively; they glow. They unfold gradually, remain close to the body, and persist through time with quiet elegance and depth. Pronounced “JWAH-lay,” the term reflects both deep linguistic heritage and the actual sensory behaviour of the product.

JWALE is not a brand, nor a commercial label. It is a proposed category concept intended to denote natural oil-based perfumes produced through traditional vapour-mediated technologies-most ideally the deg-bhapka hydro-distillation system. Its purpose is to restore predictability, dignity, technical clarity, consumer trust, and artisanal pride to a perfume tradition that deserves far better than to remain hidden behind a semantically broken name.

This proposal does not seek to replace the word attar globally, nor to interfere with West Asian traditions where it remains culturally intact and economically successful; it addresses a specifically Indian semantic and market collapse.

A more detailed technical discussion of these arguments is also presented in the preprint paper Naming the Unnamed Gap in Indian Perfumery and the Case for JWALE”.

Restoring India’s fragrance

Today, fewer than 5% of perfumes used in India belong to our indigenous oil-based tradition. This is not because the technology failed or became obsolete. It is because cultural memory faded, language blurred, artisanal ecosystems weakened, institutional support vanished, and colonial and post-colonial market forces reshaped aspiration, perception, and desire.

India did not lose perfumery knowledge. It lost confidence in claiming it.

Reviving India’s fragrance heritage does not mean rejecting modern perfume culture, international brands, or global trends. It means bringing Indian sophistication-rooted in science, climate intelligence, material wisdom, and aesthetic subtlety-back into contemporary discourse with clarity, pride, and renewed scientific understanding.

Long before perfume became a spray, India mastered essence. Long before fragrance became branding, India understood intimacy, longevity, balance, and layered revelation. Perhaps the time has come to let India’s fragrance glow again-not as nostalgia, not as revivalism, but as living technology, restored in both name and respect.

(Dr. Abdul Ghafur is Senior Consultant in Infectious Diseases and Body Odour Medicine, Apollo Hospital, Chennai; Director, FragraGenomics Biotech Pvt Ltd. drghafur@hotmail.com)



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Neurobehavioural therapy can reshape brain networks in functional neuro disorders, says expert https://artifex.news/article70632766-ece/ Sun, 15 Feb 2026 01:09:00 +0000 https://artifex.news/article70632766-ece/ Read More “Neurobehavioural therapy can reshape brain networks in functional neuro disorders, says expert” »

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Prof. LaFrance, Professor of Psychiatry and Neurology at Alpert Medical School, Brown University, said that neurobehavioural therapy has demonstrated measurable changes in functional and structural brain connectivity.
| Photo Credit: Getty Images/iStockphoto

Functional neurological disorders, long dismissed as purely psychogenic conditions, are now understood as disorders of neural network dysfunction shaped by cognition, emotion and behaviour, said US-based neuropsychiatrist Curt LaFrance at a commemorative lecture held in memory of eminent neurologist Krishnamoorthy Srinivas at the Buddhi Clinic on Saturday.

Also Read | Tremors, seizures, paralysis: this brain disorder is more common than multiple sclerosis – but often goes undiagnosed

The lecture, delivered virtually to mark his 93rd birth anniversary, touched upon functional neurological disorders and potential treatment pathways using neurobehavioural therapy.

Prof. LaFrance, Professor of Psychiatry and Neurology at Alpert Medical School, Brown University, said that neurobehavioural therapy has demonstrated measurable changes in functional and structural brain connectivity in patients with functional neurological disorders, and has offered biological evidence that psychological interventions can reshape dysfunctional neural circuits.

It does not merely ease symptoms in patients with functional neurological disorders, it can alter brain connectivity itself, he stated. Prof. LaFrance said that conditions such as functional seizures, movement disorders and cognitive symptoms are neither “all neurological” nor “all psychiatric”, and urged clinicians to move beyond binary classifications.

The commemorative event opened with a remembrance by Aparna Rajagopal, who reflected on her father, Dr. Srinivas, as both a pioneering neurologist and a compassionate human being. She recalled his decision to return to India in 1965 after advanced training abroad and devote 52 years to building community neurology at Voluntary Health Services in Chennai.

This was followed by a reading from ‘Tusitala’, the biography of Dr. Srinivas, by Subbulakshmi Natarajan, who had worked alongside him for over three decades.

In the presence of Ennapadam Srinivas Krishnamoorthy and Padma Srinivas, senior neurologist V. Natarajan read the formal citation honouring Prof. LaFrance for his international contributions to neuropsychiatry, epilepsy and functional neurological disorders.

Prof. LaFrance, in his lecture, also explored broader neuropsychiatric concepts, including the idea of “paroxysms” — episodic neurological or psychological events — encompassing epilepsy, panic attacks and even depressive episodes. Careful history-taking is critical, particularly as around 10% of patients may have both epileptic and non-epileptic seizures, he said.



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What is radioactive decay? – The Hindu https://artifex.news/article70325507-ece/ Mon, 26 Jan 2026 10:30:00 +0000 https://artifex.news/article70325507-ece/ Read More “What is radioactive decay? – The Hindu” »

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In a random moment, all energy is lost.
| Photo Credit: Unsplash Images

In a random moment, all energy is lost. The unstable subject cannot help but decay, slowly but surely, letting go of particles to become stable. It loses itself to become balanced again. This is a radioactive atom’s decay.

Warning: Danger ahead

Look at the periodic table down below. Other than the blue, all elements depict some amount of radioactivity. The ones though at the bottom? They are the most unstable and display high radioactivity. When it comes to radioactivity, it’s all about the nucleus. Everything depends on it.

Other than the blue, all elements depict some amount of radioactivity.

Other than the blue, all elements depict some amount of radioactivity.
| Photo Credit:
Wikimedia Commons

You see, we know radiation is energy. But where do the unstable atoms get this energy? The radiation emitted is because of a process called radioactive decay.

Did you know?
Uranium is a radioactive element with no stable form.

At the site

Unstable nuclei can produce three types of rays or particles each exhibiting different characteristics. In all three cases, the atom undergoes change.

In all three cases, the atom undergoes change.

In all three cases, the atom undergoes change.
| Photo Credit:
Picryl

1. Alpha

Alpha particles are positively charged. When the nucleus of the unstable atom has too many protons in its nucleus (like charges repel each other, remember?), it kicks out 2 protons and 2 neutrons (exactly the composition of Helium-4). This is the alpha particle and called alpha decay. When the nucleus ejects out an alpha particle, it becomes lighter and more stable than before.

Eg: Radium (88 protons) undergoes radioactive decay by releasing an alpha particle and becomes Radon (86 protons)

2. Beta

Beta particles are often negatively charged (electron) but sometimes can be positively charged too (positron). A beta particle is essentially a high energy electron that is ejected out of the nucleus. In beta decay, a neutron converts into proton or vice versa and emits a beta particle. Isotopes of Sodium are good examples for this.

3. Gamma

This is a case dealing with excess energy (the atom is very excited). An unstable nucleus emits the excess energy in the form of electromagnetic photons that are highly energetic in nature called gamma rays. Here, protons and neutrons do not change numbers, i.e, atomic number and mass number remain the same. Gamma rays are the same as X-rays except that they are generated by neutrons and not electrons.

Spontaneous overflow?

Yes. While natural radioactivity is random and spontaneous, this process can be induced as well. Just simply alter the composition of the nucleus.

Just simply alter the composition of the nucleus.

Just simply alter the composition of the nucleus.
| Photo Credit:
Wikimedia Commons

Ionizing Radiation – Radiation that has enough energy that it can forcefully remove the electrons clinging to an atom with all its life. Alpha, Beta, and Gamma particles are all forms of ionizing radiation.



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Shocking science: What causes static electricity? https://artifex.news/article70317310-ece/ Tue, 09 Dec 2025 06:49:00 +0000 https://artifex.news/article70317310-ece/ Read More “Shocking science: What causes static electricity?” »

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Static electricity with hair and a balloon.
| Photo Credit: WIKIMEDIA COMMONS

To put it simply, static electricity is the small buildup of electrical charge on the surface of an object. It occurs when materials rub against each other and the friction often comes with a transfer of electrons, leading to an imbalance of charges. But let’s read a little more into it.

How it happens

We are all made of atoms, and so are a lot of the things around us. And in turn, atoms are made of protons, electrons, and neutrons. Rubbing any two objects together (like socks on a carpet, or a balloon on your hair) causes electrons to move from one surface to the other. In this manner, one object becomes positively charged, while the other, negatively charged.

Now, the secret behind the shock? Well, the human body conducts electricity just as well as metal does, and when a charged object comes in contact, the charge suddenly shifts to the other object to balance itself. This quick movement creates a tiny spark. We can see a lot of examples of this in our daily lives — from clothes clinging to each other during friction, to sparks when touching a doorknob after walking on a carpet.

A necessary nuisance

Static electricity isn’t so much a pain in the neck — that is once you hear how useful it can be. Without it, we can’t get our photocopiers or printers to work. Static charge attracts toner (powdered ink) or ink to create images and documents.

Air filters and dust removers also rely on static electricity. The dust particles are given an electric charge and then attracted to surfaces with an opposing charge, effectively trapping them.

And yes, the textile industry also needs static electricity. It can help fibres stick to each other during spinning, improve the efficiency of weaving operations, and enhance the application of finishing chemicals to fabrics.

Of course, when you do need to avoid it, here are some things you need to do. Wear more natural fibres like cotton. Keep your skin hydrated with moisturiser. This will prevent any friction. You can also go for fabric softeners on your clothes.

Static electricity may feel like a tiny shock, or a cute magic trick. But it’s just science in action. The next time you feel a spark on touching a doorknob, know that even the smallest particles can do something really powerful.



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No, no, noise: The noise cancellation science https://artifex.news/article70293533-ece/ Wed, 03 Dec 2025 04:30:00 +0000 https://artifex.news/article70293533-ece/ Read More “No, no, noise: The noise cancellation science” »

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It is possible to build a temporary reality sans noise.
| Photo Credit: Freepik

Our reality is a yes, yippie one for noise. We are always swimming in it. Sound waves pervade our atmosphere and a certain portion of those sound waves are what we refer to as noise (Sounds change into its alter ego ‘noise’ when we, subjectively, don’t want them there or think they are too disruptively chaotic, silly).  But, it is possible to build a temporary reality sans noise. We owe this new reality to the science of noise cancellation.

They cancelled it!

Sound engineers are always looking to make sound more ambitious. It didn’t take them too long to master the art of cancelling noise. In 1934, German inventor Paul Lueg discovered that we could control unwanted sounds. That is, if a sound wave is unwanted, it could be muted by the introduction of an opposing sound wave of the same frequency which cancels that wave. 

Sound engineers are always looking to make sound more ambitious.

Sound engineers are always looking to make sound more ambitious.
| Photo Credit:
Unsplash Images

Soon it would gain popularity. Noise cancellation is also referred to as Active Noise Cancellation (ANC). You might have often seen the acronym in headphone ads. By the 1950s, the active noise cancellation method was properly researched and getting implemented. Shortly thereafter, ANC became the state of the art, crucially commercialised by headset companies.

Key components

There are three major components that make noise cancellation work. They are:

1. Microphones

These do the job of detecting target sounds from the atmosphere. 

2. Processor (processing system)

Once the sounds are captured, the processor will analyse the sound. Frequency, magnitude, etc. are calculated and another sound is generated in the opposite phase (inverse wave form).

3. Speakers

They send out this “anti-sound” which will then interact with the original sound (noise).

Active noise reduction.

Active noise reduction.
| Photo Credit:
Wikimedia Commons

Destructive Interference

This is a paradox. Destructive Intereference is the driving force behind the noise cancellation science. When sound waves interfere with one another, they create areas of interference patterns, namely destructive and constructive. 

Interference
is a fundamental property of all waves. For interference to happen, you need at least two waves.

Destructive interference is when sound waves interact and the resultant volume is decreased. Hence a paradox. 

Take a look at the two sine waves shown below. What do you notice? 

Two sine waves.

Two sine waves.
| Photo Credit:
Wikimedia Commons

They are waves of the same frequency but the crest of one wave is in opposition to the trough of the other wave. Now imagine these two together, overlapping each other. Then we get a situation where one wave is up while the other is down hence cancelling each other out. This circles us back to noise cancellation. 

ANC vs PNC

In headphones, ANC and PNC work together to bring you the best experience while listening to audio through it. We know what ANC is now but what is PNC?

PNC is Passive Noise Cancellation. Unlike active noise cancellation where a new soundwave is generated to cancel out the noise, PNCs physically block noise and prevent it from reaching our ears. That classic black ear cushion fitted into the headphone for best comfort? A great example of PNC!  



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Science for All | New atlas reveals tiled bodies are common across life on earth https://artifex.news/article70297360-ece/ Wed, 19 Nov 2025 08:21:00 +0000 https://artifex.news/article70297360-ece/ Read More “Science for All | New atlas reveals tiled bodies are common across life on earth” »

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Tiling classification variables and sub-variables with examples

(This article forms a part of the Science for All newsletter that takes the jargon out of science and puts the fun in! Subscribe now!)

Biologists and designers have long been fascinated by repeating patterns in nature, from spirals in shells to honeycombs in bees’ nests. However, they have paid the most attention to patterns called ‘cellular foams’ seen in bone or wood, where thin walls enclose many small chambers. These structures are strong and light and usually quite rigid.

This said, many organisms build their bodies from solid pieces separated by softer joints, like a natural suit of tiles, such that these tilings can shift and often repair themselves piece by piece — yet researchers have studied them in only a few well-known cases, including fish scales and reptile armor.

If a new study, published in PNAS Nexus by researchers in Germany, is to be believed, the prevalence of tilings in nature is surprisingly more widespread.

At the outset, the researchers developed a biological definition of tiling that differed from the strict mathematical concept. This was needed because, in nature, the tiles are almost never perfectly edge to edge: there’s usually a thin, softer joint in between. The team thus defined biological tiling as a repeated arrangement of solid tiles separated by a joint material — then built a database around this idea.

They collected information of more than 120 examples from across the tree of life from published research papers, images, and expert inputs, then shortlisted 100 clear cases that fit their definition. For each example, they noted down about 70 parameters — including what the tiles and joints were made of (mineral, protein, sugar, etc.), the shape of the tiles, how the tiles touched or overlapped, their size and packing density, and the overall pattern. Finally, they used multivariate analysis to look for patterns among these traits.

To their pleasant surprise, the researchers found that architectures were far more common and diverse than expected. The examples spanned viruses, plants, arthropods, molluscs, and deuterostomes (such as echinoderms and vertebrates). Their tiles spanned a wide range in size — from nanometre-scale virus capsids to turtle shell plates tens of centimetres across.

Across this range, some motifs also recurred. Many tilings used mineral-protein or sugar-protein combinations in tiles and joints and were built from simple tile shapes arranged in a regular grid-like pattern. Many fine tilings with medium-sized tiles provided shielding and structural support at the same time.

The analyses also revealed strong preferences for certain materials. While the protostomes often combined sugar and protein, deuterostomes used minerals and protein, and plants went for sugars plus other polymers such as lignin. The overlapping tiles of the sort familiar from fish and reptile scales turned out to be especially characteristic of deuterostomes.

Next, plant tilings were found to cluster tightly because they shared sugar-based tiles and lignin joints whereas arthropod tilings were more spread out, reflecting their wide variety of forms and functions. At the same time, the researchers also found that some seemingly unrelated structures were actually quite similar on a deeper level. In particular the overlapping plates of bony fish, brittle stars, and shark teeth appeared to be similar solutions that these disparate life forms had evolved to solve similar mechanical problems, including protection and flexibility.

The researchers’ catalogue thus exposed likely evolutionary constraints but also new open questions. For instance, why do tiles in such different organisms tend to share a similar upper size limit? How do material choices control which patterns are possible? And under what ecological pressures did the common regular tiling patterns arise? According to the team’s paper, there are also other gaps that prior research hasn’t covered fully: joint materials are often poorly described and there could be many undiscovered nanoscale tilings once imaging tools catch up.

The researchers also said their database and a website they set up together form a “morphospace” that designers, engineers, and architects could browse as a library of natural design ideas. The website is accessible here: https://tessellated-materials.mpikg.mpg.de/

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Science for all what is the connection between extreme heat and increased sugar consumption https://artifex.news/article70189244-ece/ Wed, 22 Oct 2025 08:47:00 +0000 https://artifex.news/article70189244-ece/ Read More “Science for all what is the connection between extreme heat and increased sugar consumption” »

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Image used for representation
| Photo Credit: V Raju

(This article forms a part of the Science for All newsletter that takes the jargon out of science and puts the fun in! Subscribe now!)

Ice creams and carbonated drinks aren’t just innocent treats anymore. There is now quantifiable scientific research warning about people using them to cool down on hot days, thus endangering their health.

In a new study published in Nature Climate Change, scientists from China, the UK, and the US reported that sugar consumption in the US rose significantly between 2004 and 2019 as temperatures increased and that this change was more pronounced in people with lower income or education levels.

This consumption was in the form of sweetened beverages and frozen desserts.

The researchers used individual, transaction-level data to study sugar intake and temperature. They found it to be strongest in the 12-30º C temperature range, during which sugar consumption increased 0.7 g per ºC per capita-day. It plateaued or declined beyond 30º C but the researchers pointed out that only 0.8% of the observations went that high. The humidity stayed the same throughout the range.

Sweetened beverages were the main source of sugar, which the researchers found people also consumed more as temperatures rose.

The study also found that people consumed more sugar in households with lower income or educational levels, rendering them more vulnerable to climate change by heightening the risk of adverse health conditions.

“It’s more about seeking cold and hydrating options, which often happen to be sugary. If people prefer water or ice, then rising temperatures wouldn’t necessarily increase sugar intake,” the study’s lead author and Cardiff University environmental science and sustainability lecturer Pan He told The Hindu.

Many Indian cities already regularly experience temperatures higher than 30º C. According to Dr. He, we can’t really say the findings of the new study will play out vis-à-vis India.

“Low-income groups are disadvantaged and tend to consume less healthy diets in both countries,” National University of Singapore assistant professor Sudatta Ray and research assistant Isabella Gupta said.

“However, in India, insufficient calorie consumption is a greater cause for concern among low-income households than the US, where the composition of the calories — whether from processed food or fresh fruits and vegetables — is a bigger problem.”

According to the Global Food Policy Report 2024, 16.6% of Indians were malnourished because of poor dietary habits, at least 38% ate unhealthy foods, and only 28% ate all five recommended food groups.

The 2024-2025 Economic Survey reported that the value of ultra-processed foods Indians consumed had ballooned by 42-times from 2006 to $37.9 billion in 2019.

India was already home to a quarter of the world’s adults living with diabetes in 2022.

According to market intelligence firm Ken Research, the carbonated soft drinks market in India is worth $19.5 billion and is driven by consumer preferences, “particularly among the youth, where carbonated drinks are a go-to refreshment option”. Despite being ultra-processed, this industry is driven by aggressive marketing campaigns, the launch of new flavours, and seemingly healthy “low calorie” options, among others, a Ken report noted.

“Given India’s high diabetes burden, rising sugar intake linked to heat could have serious public health implications. Urgent action—such as dietary education, fiscal measures, and other policy tools—may be required to address these risks in the context of climate change,” Dr. He said.

To tackle the problem of increased sugar consumption early on, the Central Board of Secondary Education (CBSE) earlier this year instructed over 24,000 affiliated schools to establish “sugar boards” so students could learn about the risks of excessive sugar intake. CBSE said that there has been a significant increase in type 2 diabetes in children over the past decade, which prompted this move.

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Tinkering towards a brighter future https://artifex.news/article70105028-ece/ Fri, 17 Oct 2025 11:54:00 +0000 https://artifex.news/article70105028-ece/ Read More “Tinkering towards a brighter future” »

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Manishka Dubey is known for having won The Inventor Challenge on Colors Infinity TV, for her ‘Child Safety Band’, a creation that was made to help children when they get lost and can’t find their parents. Her great passion towards STEM (Science, Technology, Engineering, and Mathematics) and strong desire to help others have led her to make incredible achievements through her years of tinkering. 

Manishka Dubey tinkering at a young age.
| Photo Credit:
SPECIAL ARRANGEMENT

Origin of interest

Manishka’s passion for technology and science began when she was five and a half years old. This passion rose within the walls of her classroom when the class was being taught a chapter about space and the ISS (International Space Station). Her interest further grew with a short trip to the school’s theatre room, where their teachers showed them exactly what went on within the ISS, and the work the astronauts did there, which mainly includes spending six-month expeditions where they maintain the space station and conduct scientific experiments. Following this, Manishka developed her interest in technology, coding, and most importantly, robotics, which is considered to be a powerful source of hands-on learning that provides students with both intellectual and moral lessons. “When I started working in robotics,” Manishka recalled, in an online interview with The Hindu In School, “one of the most important lessons I learnt was, ‘resilience matters’. Every failure is not a setback, but a stepping stone that brings you closer to success.” The powerful truth behind these words cannot be overlooked. She also emphasised the importance of imagination and collaboration, placing ‘teamwork’ as the main point of focus, stating that it brought in diverse perspectives, which, in turn, led to stronger innovative solutions. 

Manishka with her trophy from ‘The Inventor’s Challenge’.

Manishka with her trophy from ‘The Inventor’s Challenge’.
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SPECIAL ARRANGEMENT

The smaller problems

In order to create something innovative, one of the main tools one would need would be a blueprint or a displayed visual of what their invention would look like and what its main components would be. But before all this, a basic idea must be formed. When asked for the inspiration and process behind her inventions, Manishka revealed that a majority of her ideas came from real-life problems she noticed around her. There are times when attention to small challenges can lead to large-scale solutions, but people tend to overlook these problems due to their size. “One thing I believe,” Manishka stated, “is that lots of people work on bigger problems, but they don’t focus on the small problems that occur around one’s house or neighbourhood.” Once she took notice of these kinds of problems, a different question took form in Manishka’s mind: “Can I solve these problems with technology?” That is when the process began! Every time a bright idea clicked in her mind, Manishka would sketch, build models, and create simple simulations to visualise it. In her words, “Innovation is about connecting curiosity with problem-solving,” and then bringing about a new experience.

Tinker to Techie:  Manishka Dubey has also authored the book titled Tinker to Techie.  It follows the story of a girl who is called ‘Tinker’ due to her reputation for taking apart and tinkering with objects, just to figure out how they function and work.

Tinker to Techie:Manishka Dubey has also authored the book titled Tinker to Techie.  It follows the story of a girl who is called ‘Tinker’ due to her reputation for taking apart and tinkering with objects, just to figure out how they function and work.
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SPECIAL ARRANGEMENT

The tinkering process

The beauty of tinkering and inventing comes from the fact that it can turn creations that once lay within the virtual, intangible realm of thoughts and ideas into objects of reality. But how does one turn an idea into a real-life creation? “What I do,” Manishka revealed, “is basically select a problem, and imagine different scenarios. What can happen? What cannot? What should I add, and what shouldn’t I?” It is through asking this series of questions that the young techie decides the components required to turn her genius idea into a working invention. Once the parts are chosen, the next step is to scribble! To actually visualise her invention, and make it look good and catchy, Manishka draws a basic sketch of its structure. “The blueprint comes to my mind during the step-by-step process of identifying the problem and coming up with a solution to it.” 

But the drawing process isn’t always easy. Unlike paintings and normal sketches, blueprints hold drawings of objects that need to be replicated and used in real life. When Manishka began creating basic sketches of her devices, there was always confusion that arose regarding their design. This included their shape, size, components, features, space, etc. But she always had her mentors to help and guide her through these doubts and confusions. Her search for solutions to small problems and creative inventions led her to the stage on Colors Infinity TV in 2022, where she won The Inventor Challenge. And it was here that she revealed her next big step for her journey as a changemaking inventor/techie.

Support in STEM

When she was on The Inventor Challenge, Manishka was asked a major question, “What will you do further?”. Her answer came in the form of Tinker Techie, an innovative startup that she founded to provide solutions and support to child-centric and educational problems faced in the world today, and also provide girls with education to get into STEM.

In a survey recently conducted on 942 students by NGO Child Rights and You (CRY), it was revealed that a major hurdle for young girls interested in STEM-related careers was their lack of awareness about the fields, with 52% of them not knowing what STEM stood for, despite 54% of them planning to take up science as their main stream of study. A portion of the young girls who wanted to pursue STEM education faced a lack of family support in the form of traditional expectations and early marriage arrangements. 

Providing girls with awareness of STEM, support, and a good role model can serve as a major step towards helping them gain better access to the fields. Manishka strives to be one of these role models. “I believe that if I can do it, any girl can!” she stated, “Tech has no gender, STEM has no gender. Everybody has the equal right and opportunity to be in the field of science and technology.” Workshops are conducted, and communities are created and managed. “We offer intra-community support for girls who are facing any issues in the field of STEM, regardless of age or location.” These workshops are held both online and offline for the comfort of those who live far away.

“If you’re passionate about something, give it your best, give it your 100%. When you don’t succeed, instead of feeling low, think of it as a lesson to try harder next time.””Manishka Dubey

Challenges faced

Manishka’s path to the founding of her startup was a bumpy one, with many obstacles. One of the biggest hurdles she had to face was her age. When she was eight, she was given support by iStart Rajasthan, a flagship initiative that provided platforms and promotions for students to create startups. Supported by her iStart advisor Raunak Singhvi and her robotics and coding mentor Shailendra Tripathi, Manishka was provided with the knowledge and skills she needed to enter the startup world. “When I started my startup, I was really new,” Manishka revealed. “I didn’t know anything about the startup world, how to pitch, or grasp the attention of investors. But when I got into iStart, I got to see other startup founders doing it and got motivated.” Being new to the field of entrepreneurship, she turned her challenges into learning experiences. Manishka had to balance running her startup with her studies and schoolwork. When the pressure got to her, making her feel demotivated and uninspired, she took time alone to partake in calming and fun activities, like listening to music, playing with her brother, and spending time with the people she loves.

Manishka showcasing one of her educational inventions. The Smart Self-Tutor Device, which was created to help visually impaired children with learning.

Manishka showcasing one of her educational inventions. The Smart Self-Tutor Device, which was created to help visually impaired children with learning.
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SPECIAL ARRANGEMENT

Manishka’s fabulous inventions
The young tech prodigy has already implemented her knowledge in the creation of many inventions that have earned her awards. Given below are two of the most popular ones.

Child Safety Band

What better way to start this off than with the gadget that won Manishka the Inventor Challenge? The child safety band is a device that can be worn and used by children in emergencies for when they are lost. It provides a geofence (A virtual perimeter around a provided geographical location), tracking feature, and an emergency SOS button to notify local public authorities who can help the child find their parents. The device also holds flashing LED lights to alert people nearby. Additionally, it has an integrated companion app for parents to locate their lost child. This device can be worn in many forms, a band, a bag tag, an ID card, etc.

Smart Self-Tutor Device

Manishka had created this educational device for the visually impaired children. It provides them with lessons on the Braille alphabet, numbers, words, sentences, etc. The device uses NFC cards (cards with a Near Field Communication chip that allows wireless data transmission) with Braille printed on them. These cards are also linked with audio feedback to provide better and efficient learning experiences.

Published – October 17, 2025 05:24 pm IST



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A Guardian’s tale: Just how strong is Jupiter’s gravity? https://artifex.news/article69999585-ece/ Fri, 17 Oct 2025 10:18:00 +0000 https://artifex.news/article69999585-ece/ Read More “A Guardian’s tale: Just how strong is Jupiter’s gravity?” »

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Fortune must have had a pretty good time when the solar nebula exploded, tossed, roared, and turned around 4.6 billion years ago. If the slightest something hadn’t gone the way it did, we wouldn’t be here writing and studying the ‘what ifs’ and ‘what is’ of our universe. One night, like our good old Galileo, you must go starwatching. Peer up at the sky in the dark of the night before sunrise, and there you’ll see planet Jupiter, as one of the brightest stars in our sky. For all its brightness, bright Jupiter holds within itself an ancient blessing, one that is responsible for the stability of our solar system. The most powerful Jovian, a consequence of its corporeal form, Jupiter has the highest gravitational pull among all the planets in our solar system. 

Bigger than pure imagination.

Gravity is a fundamental force of space-time. Generally we have learned that the heavier an object, the stronger its gravitational pull. Newton’s law of gravitation describes this force as attractive in nature as well as directly proportional to the product of the masses involved.

Now imagine, really imagine with utmost precision, how humongous a planet Jupiter is. Compared to our home (also known as Planet Earth, the fifth largest in the solar system), Jupiter is actually a titan with immense mass. The name, taken after the Roman king of Gods, befits the planet. No amount of pictures can materialise how big it is for us, so imagination is an onerous task. NASA says if it were hollow, Jupiter could fit 1000 Earths inside it. Its radius is about 10 to 11 times that of our planet.

Galileo Galilei
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Picryl

With all the enormous matter, Jupiter’s gravity can change even the orbits of asteroids. Not to mention, the planet has intense magnetic fields and so many moons (as of now, 95 moons are officially recognised), rings, and Trojan asteroids in its system! 

Resembling the Sun

Since the inception of the planet, there has never been a quiet moment. 4.6 billion years ago, Jupiter was formed by gravity pulling gas into a raging orb. Truth be told, we don’t exactly know how. Made of hydrogen-helium gas in hydrostatic equilibrium, the planet has a dynamic atmosphere and resembles the Sun. Maybe, if ever nuclear fusion (what powers the Sun) was possible on Jupiter (it is not possible on Jupiter as it doesn’t meet the temperature and pressure criteria due to not enough mass), it could’ve been another Sun.

Hydrostatic equilibrium
Hydrostatic equilibrium means the balance between upward-directed pressure force and the downward-directed force of gravity. Jupiter’s hydrostatic equilibrium prevents it from collapsing under its own weight.

Enigmatic Jove, with its signature belts and zones, cyclones and anticylones, and mesmerising auroras, tells us so little. Shrouded in mystery, scientists continue to probe for better understanding this tale.

Interaction, Aid, and this Life.

If you could travel to Jupiter, you would be crushed. Crushed either by the heavy gravity or crushed by the powerful storms. Amidst all the sizzling rage and extreme phenomena, the solar system is dependent on Jupiter’s gravity. The gravitational interactions that the planets in our solar system have with one another has great effects. Newton’s law also explains that the strength of the gravitational force is inversely proportional to the square of the distance between the masses. For Jupiter, this ultimately means that it sort of becomes the guardian whose presence shaped many environments. Jupiter’s gravity influences and keeps the orbits in place. In fact, both Jupiter’s and the Sun’s gravity influences a point called the barycenter, which is the centre of mass of two or more bodies that orbit each other. Only the Jupiter-Sun barycenter lies outside the Sun’s surface. Therefore, the barycenter of our entire solar system (which is relative to the Sun) is affected and aided by Jupiter.

Studies also show that Jupiter’s gravitational influence brought many life-enabling elements to Earth during its early days. Along the way, it has also flung space materials inward as well as deflect materials outward. Long story short, here we are, living this life. Just some gravity keeping things in check.

A quick look at important Jupiter Facts

Radius – 69,911 kilometres

Gravity– 24.79 m/s²

mean distance from the Sun – 778,340,821 km (5.2 AU)

January 7, 1610 – Galileo Galilei discovers Jupiter’s moons

Published – October 17, 2025 03:48 pm IST



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Science for all Curiosity-driven research in an unequal world https://artifex.news/article70165905-ece/ Wed, 15 Oct 2025 07:41:00 +0000 https://artifex.news/article70165905-ece/ Read More “Science for all Curiosity-driven research in an unequal world” »

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(This article forms a part of the Science for All newsletter that takes the jargon out of science and puts the fun in! Subscribe now!)

There is ample evidence that the big leaps science achieves from time to time are often built on scientists asking simple questions, driven solely by their curiosity and not because they wanted to develop a specific technology.

In a widely circulated piece in The New York Times, the journalist Katrina Miller wrote how one of the physics Nobel laureates this year, John Clarke, probably did not know how his work on macroscopic quantum tunnelling would lead to contemporary quantum computers. It goes somewhat similarly for the medicine and chemistry prize laureates as well. Ms. Miller goes on to cite the examples of Agnes Pockels, “whose fascination with the soap bubbles made while washing dishes laid the groundwork for the field of nanotechnology”, and “Isaac Newton, whose musings about an apple falling from a tree inspired a first theory of gravity, a bedrock that eventually took humans to space.”

Such examples also show that we can’t always know what applications will come up tomorrow by asking and answering some questions today. The deeper idea is that the more we know about the universe, the more we will know what to do with that knowledge.

But like all important matters today, there is at least another side to this coin (there are in fact several sides but let’s stick to just two here).

Science today is an integral part of society. It has got there quickly as well. Just in the last two centuries, but especially since the late 1800s, science has become much more organised, more specialised, and — importantly — more expensive. It was expensive in the 18th and 19th centuries, too, but it is even more so today. That it has become more organised is also important because that played an important part in quelling many superstitious beliefs and paving the way for scientific thinking while allowing scientists to make more and more intricate discoveries.

The scientific enterprise of the 21st century operates like an industry, with its own inputs and outputs, planning, budgeting, construction, recruiting and training labour, requiring policies and laws, and so on. While there are many laudable pockets of low-cost science, it is by and large a resource-intensive enterprise — and that means the countries that fund it need to think about where those resources will come from and how best to use them.

Now, there is a refrain in not-so-wealthy-but-still-quite-wealthy countries like India that there isn’t enough money to fund everything. Based on following science administration and public spending in India for over a decade, I think this claim is false: India has lots of money; what’s often lacking is the political will and the vision to fund specific enterprises over others.

But even after accounting for this argument, or perhaps because of it, many experts have said that there is a credible need for the scientific enterprise to thoroughly justify the way it spends public money. And this is the other side of the coin where curiosity-driven research presents a problem: it often cannot say what benefits it will yield in future, and developing and distributing those benefits often takes time (and more resources).

As a result, those experts have continued, there is a case to be made that India — with its vast appetite for technological solutions to improve working conditions and labour productivity in so many sectors — can’t afford curiosity-driven research alone and that it should provide special incentives for scientists and engineers to pursue research in particular areas. As any researcher will attest, this is also a long and difficult road, equally laden with the risk of dead-ends, but in many ways it’s one that administrators have had an easier time justifying and providing (some) funding for.

I’m a firm believer in the virtues of curiosity-driven research. Despite my difficult relationship with the Nobel Prizes, I’m often quite excited about the scientific work they reward. I’m particularly fond of the 2016 chemistry prize, “for the design and synthesis of molecular machines”, which involved a not insignificant amount of playful thinking. One of the laureates who shared this prize, J. Fraser Stoddart, had written in a 2005 essay:

“It is amazing how something that was difficult to do in the beginning will surely become easy to do in the event of its having been done. The Borromean rings [which the laureates spent some time and effort making, in the process advancing chemistry] have captured our imagination simply because of their sheer beauty. What will they be good for? Something for sure, and we still have the excitement of finding out what that something might be. And so the story goes on…”

His words illustrate the power of curiosity-driven research to change the world, even reshape it. It’s the same power a child wields when she asks questions like “do people in Antarctica stand upside down?” or, as a friend’s daughter recently asked me, “why does poop smell so bad?”.

Despite my own inclinations, I don’t think we can afford to ignore or dismiss the need for research that is more tailored to the needs of particular sectors. Both paradigms have their problems even as no country can afford to adopt just one or the other in its pursuit of technological development. For example, as the work of this year’s winners of the special Nobel Prize for economics says, every country needs to meet certain conditions for its scientific output to translate to technological wealth followed by economic growth. If these conditions are not met, simply increasing the scientific output won’t help; in fact it could become counterproductive.

So while it’s heartening to tout the virtues of doing science led only by the guiding light of curiosity, it’s important to remember that there’s a bigger world out there and that science is a part of it.

From the Science pages

Question Corner

Why do we feel sleepy after a heavy meal? Find out here

Flora and fauna

Published – October 15, 2025 01:11 pm IST



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