Sustainability

India has emerged as the world’s largest exporter of “virtual water”—the hidden freshwater used to produce goods like rice, cotton, sugar, and textiles—even as parts of the country struggle with worsening water scarcity. The finding, highlighted in a recent study by the Asian Infrastructure Investment Bank, exposes a growing paradox at the heart of India’s trade and resource management strategy.

Virtual water refers to the volume of water embedded in the production of commodities. When India exports crops such as rice or sugar, it is effectively exporting vast quantities of freshwater. According to the report, countries like the United States, Japan, Germany, and the United Kingdom are among the biggest importers—outsourcing water-intensive production to nations already facing water stress.

India tops this global ranking, followed by countries such as Indonesia, Thailand, and Vietnam. While this reflects India’s strong agricultural base, it also raises serious concerns about sustainability.

A growing crisis beneath the surface

The implications of this export pattern are already visible on the ground. In parts of rural Maharashtra, including Pune district, thousands of residents rely on water tankers despite normal or even above-average monsoon rainfall. Groundwater levels in regions like Ambegaon, Junnar, and Khed have declined sharply, making daily life and agricultural activity increasingly difficult.

Experts warn that such recurring shortages are not just seasonal anomalies but symptoms of deeper structural issues. Export-oriented agriculture continues to prioritise water-intensive crops, even in regions where water availability is fragile.

Trade vs sustainability

The AIIB report points to a global imbalance: wealthier nations reduce their environmental burden by importing water-heavy goods, while countries like India absorb the ecological cost. This pattern reflects a trade system driven more by economic specialisation than by resource availability.

Without intervention, climate change is expected to worsen the situation. Rising temperatures, erratic rainfall, and groundwater depletion could intensify the gap between what India exports and what it can sustainably support.

Ethanol debate adds fuel

The issue becomes even more complex when viewed alongside India’s ethanol blending programme, which aims to boost energy security and support farmers. Critics argue that it indirectly encourages the cultivation of water-intensive crops like sugarcane and rice. While industrial water use in ethanol production is relatively low, the agricultural water footprint remains significant.

What needs to change

Policy experts suggest a multi-pronged approach. This includes promoting less water-intensive crops, improving irrigation efficiency, and investing in better water infrastructure. There is also a growing call to rationalise water pricing—introducing tariffs that reflect scarcity and discourage excessive use.

At the same time, traditional solutions such as community-led water conservation systems—like stepwells and temple tanks—are being revisited as sustainable models that can complement modern infrastructure.

A balancing act ahead

India’s position as a leading exporter of virtual water highlights both its agricultural strength and its environmental vulnerability. The challenge now is to strike a balance between economic growth and ecological sustainability.

As the country continues to feed global markets, the pressing question remains: can India afford to keep exporting water it increasingly cannot spare?

What began as a creative Earth Day outreach has quickly become a global digital sensation. The NASA has struck a chord with audiences worldwide through its interactive tool, “Your Name in Landsat,” which transforms ordinary names into stunning visual collages made entirely from real satellite imagery.

Launched on Earth Day 2026, the tool allows users to type their names and see each letter formed from natural landscapes—rivers curving into “S” shapes, coastlines outlining “C,” or desert dunes sculpting an “A.” Within days, the feature gained massive traction across platforms like Instagram and X, blending personalisation with scientific storytelling in a way that resonates with a digital-first audience.

Science Meets Creativity

At the heart of this viral trend lies the Landsat program, the world’s longest-running Earth observation mission, continuously capturing images of the planet since 1972. The tool taps into this vast archive, using advanced algorithms to match geographical formations with alphabet shapes.

Each letter generated is not a graphic imitation but a real, scientifically captured satellite image, offering users both aesthetic appeal and an authentic glimpse of Earth’s diverse terrain. From winding rivers to rugged mountain ranges, every name becomes a unique mosaic of the planet.

Why It’s More Than Just a Trend

Beyond its viral success, the tool represents a shift in how complex scientific data is communicated to the public. By turning satellite imagery into personal, shareable content, NASA has made Earth observation relatable and engaging—especially for younger audiences.

Experts say this approach helps demystify remote sensing technology while sparking curiosity about geography, climate science, and environmental monitoring. It’s a subtle yet powerful reminder that the data collected from space is not just for scientists—it belongs to everyone.

A Gateway to Climate Awareness

The Landsat programme has been instrumental in tracking long-term environmental changes, including deforestation, glacier retreat, urban expansion, and water resource shifts. While the tool itself is playful, it indirectly introduces users to the importance of decades-long planetary observation.

By linking a viral trend to such critical themes, NASA has managed to bridge the gap between science, art, and public engagement—a rare combination in today’s fast-moving digital landscape.

The Bigger Picture

“Your Name in Landsat” highlights a growing trend in science communication: making data interactive, visual, and personal. In doing so, it transforms passive audiences into active participants in understanding Earth.

As millions continue to share their personalised satellite names online, one thing is clear—NASA has not just created a tool, but a movement that turns curiosity into connection, and science into something deeply human.

New Delhi: As India looks to future-proof its energy needs amid global fuel uncertainties, a quiet but significant transition is taking shape—rethinking how millions cook every day. Moving beyond fossil fuels, policymakers are now exploring ethanol-based cooking solutions as part of a broader sustainable energy push aligned with Atmanirbhar Bharat.

At the centre of this transition is “Superblu,” an ethanol-based fuel that promises to be not just cost-effective, but environmentally cleaner than traditional alternatives like LPG and kerosene. With India’s ethanol production capacity crossing 2,000 crore litres, the country is uniquely positioned to scale this shift using domestically produced biofuel derived from sugarcane and maize.

Cleaner Fuel, Healthier Workspaces

Unlike kerosene and biomass, which release harmful particulate matter, ethanol burns with a clean, blue flame, significantly reducing indoor air pollution. For India’s millions of street vendors and small eateries—often operating in cramped, poorly ventilated spaces—this could mean a dramatic improvement in working conditions.

The environmental benefits extend beyond air quality. Ethanol, as a biofuel, has a lower carbon footprint compared to fossil fuels, making it a more sustainable option in the long run. By integrating ethanol into everyday cooking, India could take a meaningful step toward reducing emissions in its informal food sector.

Efficiency Meets Sustainability

Modern ethanol burners are also proving to be highly efficient. Early evaluations suggest that one litre of ethanol can provide high-intensity heat for up to 15 hours, allowing vendors to operate for extended periods with minimal fuel. The ability to store ethanol in simple, non-pressurised containers further reduces the logistical burden associated with LPG cylinders.

This combination of efficiency and simplicity is key to sustainability—not just environmental, but economic.

Lower Costs, Stronger Livelihoods

For small food businesses, sustainability is closely tied to affordability. Fuel remains one of the largest recurring expenses. Ethanol, projected to cost significantly less than commercial LPG, offers immediate financial relief.

Lower fuel costs could translate into better profit margins for vendors, enabling them to reinvest in their businesses or improve their quality of life. In this sense, ethanol adoption supports not only green energy goals but also inclusive economic growth.

Building on Existing Ecosystems

India’s ongoing ethanol blending programme provides a ready-made distribution backbone. Leveraging this infrastructure to supply “cooking-grade ethanol” could accelerate adoption without requiring an entirely new supply chain.

Such a move would complement earlier clean cooking initiatives like the Pradhan Mantri Ujjwala Yojana, which expanded access to LPG in households. An ethanol-based model could now extend similar benefits to the commercial and informal sectors.

Safety and Policy Readiness

For ethanol to scale sustainably, robust safety standards will be essential. Regulatory bodies such as the Bureau of Indian Standards and the Petroleum and Explosives Safety Organisation are currently working on guidelines to ensure safe storage, transport, and usage.

Unlike LPG, ethanol does not require pressurised cylinders, but as a flammable liquid, it must be handled carefully to prevent spills and fire hazards. Clear protocols and awareness will be critical for widespread adoption.

Toward a Greener Food Economy

The proposed shift toward ethanol-based cooking reflects a larger vision—one where sustainability, affordability, and energy security intersect. If implemented effectively, an “Ethanol Clean Cooking Mission” could redefine how India’s food economy operates, especially at the grassroots level.

For millions of small vendors, this isn’t just about switching fuels—it’s about accessing a cleaner, safer, and more stable future.

A nationwide effort to measure early learning outcomes has begun in Nagaland, as the PARAKH, under the National Council of Educational Research and Training (NCERT), rolls out the Foundational Learning Study (FLS) 2026.

The assessment, being conducted in the state from April 13 to 14, focuses on evaluating Grade 3 students’ foundational skills, particularly in literacy and numeracy. In Nagaland, the study covers 70 schools across 10 districts, with a total of 798 students participating. The sample includes both government and private institutions, ensuring a balanced representation of students from varied socio-economic and geographical backgrounds.

To ensure smooth execution, authorities have deployed a structured team, including state-level and district-level coordinators, along with field investigators tasked with conducting the assessments. Additional personnel have also been kept on standby to manage any contingencies during the process.

The primary objective of the study is to generate reliable, data-driven insights into the learning levels of young students at a crucial stage of their education. These findings will play a key role in shaping future education policies and improving classroom practices. The initiative aligns closely with the goals of the National Education Policy 2020, which emphasises strengthening foundational literacy and numeracy as a national priority.

Education officials believe that the data gathered through FLS 2026 will help identify learning gaps and guide targeted interventions. By understanding where students stand in their early learning journey, policymakers and educators can design strategies to improve outcomes and ensure that no child is left behind.

As the study unfolds, it is expected to contribute significantly to enhancing the quality of primary education in Nagaland, reinforcing the broader national mission of building strong learning foundations in the early years.

A team at IIT-Guwahati has created energy-efficient bricks that naturally cool buildings, possibly cutting down on AC use. The work by Bitupan Das, Urbashi Bordoloi, Pushpendra Singh, and Pankaj Kalita was published in the journal of energy Storage. It seems like a practical step for places where heat builds up fast.

Modern buildings depend on air conditioning to stay comfortable in summer. That system uses a lot of electricity and adds to emissions. How can we keep interiors cool without relying on that? The researchers focused on changing how heat moves through walls and roofs.

The bricks contain Phase Change Materials, like wax, that soak up heat when they melt and give it back when they harden. By day, the materials take in excess warmth, reducing indoor temperature. At night, they slowly release it when things cool down. Among the tested options, OM35 stands out because it melts at 35C - perfect for areas between 28C and 38C (that's hot and sticky in many regions).

To prevent PCMs from leaking during melting, the team mixed them with biochar - a carbon-rich material that holds everything together. This composite keeps the PCM locked in. Plus, it boosts heat transfer. The resulting bricks stay shaped, hold up under pressure, and work well in hot, wet environments. They're built for climate-sensitive construction, smart, responsive, and practical.

Prof. Kalita pointed out that these PCM-filled bricks outperform standard ones in managing temperature. They soak up daytime heat and slowly release it at night - cutting down on AC use dramatically. How much energy could be saved if every building used this system?

Still, getting these bricks into real-world use is tough. High upfront prices, hard-to-scale production, no industry standards, little builder knowledge, and few working examples stand in the way. The IIT-G team says success needs lower costs, field tests to prove what works, official certifications, partnerships with builders, supportive policies, and awareness campaigns to push adoption. If development continues and the industry gets involved, these energy-efficient bricks might just become standard in hot-humid areas.

Delhi might soon be testing roads and buildings that can "digest" pollution. However, the real question here is not only about innovations but why cities must rethink sustainability urgently.

Delhi Government e this first of its kind initiative which partnership with Indian Institute of Technology Madras to study photocatalytic surfaces coated with titanium dioxide (TiO). These smart materials upon sunlight exposure, break down harmful pollutants like nitrogen dioxide (NO) and volatile organic compounds (VOCs) into less harmful substances such as water and nitrates. The six-month study will implement these coatings in the areas of the roads, pavements, and building surfaces that may transform daily infrastructure to be the passive air purifiers.

Science backs it up. Continuously neutralising the pollutants without any additional energy input, photocatalysis allows for the surfaces to be low in maintenance and easily upgradeable. As a city which recorded no "good" air quality days in 2025 such tools could be a long-term addition to the policy measures which have been failing to produce results.

On the other hand this new technology does not help us to answer the more profound question: Are we merely trying to fix the pollution after it has been created when really we should be preventing it in the first place?

TiO coatings work - but they're not a fix. They clean up after the fact, like wiping blood off a wound. Delhi's air is poisoned by cars. Building dust, factories, and how energy is used - no real shift means these materials stay just that: temporary solutions.

Sustainability isn't about green slogans anymore. It's about cutting out polluting systems entirely. Public transit over private cars, efficient buildings, strict construction rules - these changes matter more than any new filter or paint. It seems hard to ignore how much we depend on old habits.

Then there's IIT Madras' work, quiet but real. These systems don't ask for change in behavior. And they just absorb pollution quietly. In cities like Delhi where emissions are high, such passive filters could cut down on exposure a lot.

The future doesn't rely only on tech or policy. It needs both - prevention and cleanup together. If Delhi pairs smog-reducing layers with real urban shifts, it might show how cities can respond differently to environmental threats, something arguably worth trying now. A passive system alone won't solve the problem, just a change in how people live and build does. that is what matters most soon.

Because ultimately, the goal is not just to build roads that clean the air—but to build cities that do not choke it in the first place.