Current Affairs for 13 February 2026

Raman-Driven Spin Noise Spectroscopy Technique

Context

• Recently, researchers at the Raman Research Institute (RRI), an autonomous institute of the Department of Science and Technology (DST) in the central government, demonstrated a technique called Raman-Driven Spin Noise Spectroscopy (RDSNS).
• The new technique developed by the scientists is capable of instantaneously measuring the local density of cold atoms without causing any significant changes to them.
• This could prove crucial in developing near-term applications in quantum computation and quantum sensing, where instantaneous detection of atoms and their quantum states is crucial.

About Raman-Driven Spin Noise Spectroscopy (RDSNS)

This technique overcomes these challenges by combining spin noise spectroscopy with the detection of polarization fluctuations of laser light passing through an atomic sample to determine the natural fluctuations of atomic spins.

Process and Method of RDSNS

• This method also uses two additional laser beams to coherently drive atoms between two adjacent spin states.
• These Raman beams generate transitions between atomic states and amplify the signal by approximately a million times.
• The probe has a volume of 0.01 mm³, which is achieved by focusing the probe to a mere 38 micrometers.
• It targets a small region of the atom cloud containing approximately 10,000 atoms.
• Importantly, the measured signal provides a direct measure of the local density, rather than just the total atomic number.
• The team of researchers used RDSNS to study potassium atoms in a magneto-optical trap (MOT). and found that the central density of the atom cloud saturated within a second, while the total atomic number measured through fluorescence took almost twice as long.
• This demonstrates an important difference—fluorescence reflects the global atomic count, while RDSNS shows how densely atoms are packed locally.

Need for RDSNS

Laser Cooling and Trapping Techniques

• In conventional cold atom experiments, the kinetic energy of atoms is reduced to near-zero temperatures through laser cooling and trapping techniques.
• In these experiments, the quantum properties of atoms become more pronounced. These cold atoms can be used as resources for quantum computers and quantum sensing.
• Methods such as absorption and fluorescence imaging are widely used to detect the quantum state of these atoms.

Inherent Limitations of the Techniques

• Absorption imaging is difficult when imaging dense atoms (atomic clouds) because the probe beam cannot penetrate deep enough to provide accurate density measurements.
• Fluorescence imaging, on the other hand, requires long exposure times to collect scattered photons, and both methods are often destructive, altering the state of atoms during the measurement.

Significance

• The broad significance of this work for quantum technologies is invaluable; fast, accurate, and uninterrupted density measurements are essential for devices such as gravimeters, magnetometers, and other sensors that rely on precise information about atomic density.
• By enabling microscopic local investigations without disrupting the system, RDSNS paves the way for studying phenomena such as density wave propagation, quantum transport, etc.
• This breakthrough, supported under the National Quantum Mission, marks RRI's breakthrough in the field of precision measurements in quantum research. puts it in the leading position.

Cold Atoms

• When atoms are cooled to ultra-low temperatures near absolute zero using lasers and magnetic fields, they reveal their wave-like nature, and the laws of quantum mechanics replace those of classical mechanics.
• This cooling dramatically slows the motion of atoms, revealing their quantum properties and allowing scientists to study fundamental physics, simulate quantum systems (quantum simulations), build precise atomic clocks, and develop quantum computers and sensors.
• This extreme cooling, often to temperatures of nanokelvins (billionths of a degree above 0 K), forces atoms to behave like waves, enabling unprecedented control and observation of quantum phenomena.

White Dwarf Systems, Discovery, Formation and Significance

Context

Recently, NASA's Imaging X-ray Polarization Explorer (IXPE) mission analyzed the internal structure of a white dwarf system for the first time in history. This research revealed many new and surprising insights into the gas dynamics and X-ray emission of a binary star, known as EX Hydrae.

White Dwarf System

• A white dwarf system consists of a white dwarf star, which is the final stage of a sun-like star's life cycle.
• This star is extremely dense and approximately the size of Earth.
• In most cases, it occurs as a binary system with another star.

Discovery and Study

• White dwarfs were identified as a distinct class of stars by stellar spectroscopy in the early 20th century.
• A recent scientific breakthrough involves NASA's IXPE mission, which studied the EX Hydrae system, located in the Hydra constellation and approximately 200 light-years from Earth.
• This study was based on in-depth analysis of X-ray polarization, not limited to traditional brightness measurements.

Formation of a White Dwarf

• When a star like the Sun exhausts its nuclear fuel, it ejects its outer layers into space, forming a planetary nebula.
• This leaves behind a hot and extremely dense core of the star, called a white dwarf.
• In binary star systems, the intense gravitational force of the white dwarf attracts gas from its companion star.
• Systems like EX Hydrae are called intermediate polar systems. In these systems, the white dwarf's moderate magnetic field partially influences the accretion disk and transports gas to its surface through magnetic field lines.

Key Features

• Extremely dense: Mass comparable to the Sun, but size as small as Earth.
• Divergent matter: Nuclear fusion does not occur. The stability of the star depends on electron divergence pressure (Pauli Exclusion Principle).
• Energy-rich radiation: Gas falling onto the surface reaches extremely high temperatures and emits X-rays.
• Magnetic effects: In intermediate polar systems, gas columns can extend thousands of kilometers above the white dwarf's surface.
• Chandrasekhar limit: The maximum mass of a white dwarf is limited to approximately 1.4 times that of the Sun. Exceeding this limit is likely to cause the star to collapse or explode.

Significance of the Study

• Using X-ray polarization data collected by IXPE, scientists estimated the height of the hot gas columns and identified X-rays reflected from the white dwarf's surface, which was previously impossible.
• This research provides a new basis for directly investigating theories related to accretion mechanisms, magnetic effects, and the behavior of matter under extreme conditions.

What is a Biomaterial? Categories and Global Scenario

Context

• As global economies shift toward sustainable and cleaner processes for consumer products like plastics and textiles, biomaterials are ushering in a new era in the field of materials engineering.
• Materials engineering is the field that studies and develops the structure, properties, and processing of metals, ceramics, polymers, and nanomaterials to make products stronger, lighter, safer, and more efficient. It combines engineering, science, and technology to discover new materials and improve existing ones.

What is a Biomaterialn ?

• Biomaterials are substances that are derived entirely or partially from biological sources or produced through biological processes. They are developed to be used as alternatives to, or in conjunction with, conventional materials.
• Their use is steadily increasing in areas such as packaging, textiles, construction, and healthcare. Common examples include bioplastics made from plant sugars or starch, bio-based fibers used in the textile industry, and biodegradable surgical sutures and tissue structures used in the medical field.

Categories of Biomaterials

Biomaterials can be broadly divided into three categories:

• Drop-in biomaterials: These are chemically similar to petroleum-based materials and can be directly used in existing production systems, such as bio-PET.
• Drop-out biomaterials: These have different chemical structures and require new processing techniques or post-use systems, such as polylactic acid (PLA).
• Novel biomaterials: These offer different and improved properties than traditional materials, such as self-healing materials, bioactive implants, and advanced composites.

India's Need for Biomaterials

In the Indian context, biomaterials address multiple national priorities simultaneously.

• They can promote environmental protection, as well as foster industrial development, revenue generation, and increased farmer incomes.
• Domestic production of biomaterials in the country can reduce dependence on fossil fuel-based imports of plastics and chemicals.
• Additionally, new markets can open up for agricultural produce and crop residues, providing farmers with alternative sources of income beyond the food supply chain.
• As the global market shifts toward low-carbon and circular economy-based products, biomaterials will help Indian industry remain competitive on the export front.
• This sector also strengthens domestic policy commitments related to the ban on single-use plastics and climate change.

India at Present

• The biomaterials industry in India is rapidly emerging as a strategic and sustainable industrial opportunity, encompassing bioplastics, biopolymers, and other bio-derived materials.
• The bioplastics market size alone was estimated to be approximately $500 million in 2024 and is expected to remain on a strong growth trajectory in the coming years.
• The proposed PLA plant by Balrampur Chini Mills in Uttar Pradesh is one of the largest investments being made in this sector.
• Additionally, startups like Phool.co are converting flower waste from temples into useful biomaterials, while Praj Industries is building a demonstration-scale bioplastics plant.
• However, despite its abundant agricultural resources, India still has to rely on foreign sources for some advanced technologies, especially when converting raw materials into high-value end products.

Global Scenario

• The European Union has implemented the Packaging and Packaging Waste Regulation (EU) 2025/40, which recognizes that compostable packaging has clear environmental benefits in certain applications.
• The United Arab Emirates is establishing itself as a global manufacturing hub by investing extensively in PLA projects. Emirates Biotech has selected Sulzer technology for a two-stage PLA plant with an 80,000-tonne-per-annum capacity, which is expected to begin operations in 2028. When fully operational, it will be the world's largest PLA facility.
• The United States continues to be a leader in many transformative technologies involving biomaterials. Federal procurement policy, through the USDA's BioPreferred program, is also encouraging this sector.

Challenges

India has the opportunity to establish global leadership in the biomaterials industry, but it also faces challenges.

• If raw material supplies do not increase in tandem with growing demand, competition with food crops could increase.
• Similarly, excessive agricultural exploitation threatens to put pressure on water resources and lead to soil erosion.
• Furthermore, if waste management and composting infrastructure remains weak, the environmental benefits of biomaterials could be limited.
• Lack of coordination between agricultural, environmental, and industrial policies could slow adoption, and if timely action is not taken, India could remain dependent on imports while other countries are rapidly advancing.

Way Forward

• To fully capitalize on this opportunity, it is essential to expand biomanufacturing infrastructure, particularly fermentation and polymerization capabilities.
•  Additionally, productivity of feedstocks derived from crops such as sugarcane, maize, and agricultural residues should be increased through advanced technologies.
• Investment in research and development, standardization, and innovation will be crucial for the development of both drop-in and novel biomaterials.
• Clear regulatory definitions, appropriate labeling regulations, and post-use solutions, such as recycling or industrial composting, will also be essential to strengthen consumer and industry confidence.
• Government procurement policies, timely incentive schemes, and support for pilot projects and shared facilities can play a key role in reducing the risk of initial investment.
• If India strengthens policy coordination and technological investment in time, it will not only meet its domestic needs but also emerge as a global export hub for biomaterials.

Global and National Need for Grassland Conservation

Context

The United Nations' declaration of 2026 as the "International Year of Grasslands and Pastoral Communities" acknowledges the fact that grasslands and their dependent communities have not received the appropriate attention in global environmental discourse. Amidst the threefold challenge of climate change, biodiversity loss, and land degradation, this declaration is both an opportunity and a warning.

Limits of Forest-Centric Climate Policy

• In 2022, a group of scientists from Tanzania, Zambia, the UK, the US, Germany, and Canada wrote an open letter in the journal "Science" urging the United Nations Framework Convention on Climate Change (UNFCCC) to include all biomes, such as grasslands and savannas, in its policies.
• According to scientists, savannas and grasslands are not only vast carbon reserves but also play a vital role in the water cycle, soil conservation, and livelihood security. Despite this, even recent conferences like COP 30 have prioritized tropical forests, exemplified by the Tropical Forests Forever Facility (TFFF).
• This trend demonstrates that global climate governance continues to prioritize "visible and dense" ecosystems, while open ecosystems are often considered barren or wasteland.

Grasslands: A Threatened Biome

• Grasslands are among the world's most threatened ecosystems today. Indeed, agricultural expansion, mining, invasive species, fossil fuel exploitation, and the suppression of traditional land management systems have all combined to weaken this biome.
• Australia's desert grasslands are a clear example, where droughts and flash floods, exacerbated by climate change, combined with invasive species like buffel grass, are exacerbating the crisis.
• This situation also highlights that the decline of traditional knowledge systems of indigenous and local communities—such as controlled fires and sustainable grazing—has exacerbated ecological imbalances.

The Cerrado and the Amazon: Ecological Interconnections

• Brazil's Cerrado savanna is another significant example of this global problem. This region is as ecologically important as the Amazon because it is the source of the country's major water systems.
• Despite this, the Cerrado is experiencing twice the amount of land loss as the Amazon. This fact reinforces the saying that 'there is no Amazon without the Cerrado'—that is, ecosystems are not isolated but are deeply interconnected.

The Social Justice Dimension

• Grassland conservation is not just an environmental issue but also a question of social justice. Both the Cerrado and Australia demonstrate that indigenous, pastoral, and traditional communities are the first and most affected.
• In fact, land rights violations, toxic waste dumping, and pro-agribusiness policies threaten both the livelihoods and culture of these communities.
• In this context, the UNCCD COP 16's recognition of grasslands as "complex socio-ecological systems" is a positive step, but this effort remains limited in scope.

The Problem of Institutional Silos

• Globally, the division of work between the UNFCCC, CBD, and UNCCD has led to policy silos. Climate negotiations are limited to carbon, while biodiversity and land degradation are scattered across other forums. Although the 1992 Rio Convention laid the foundation for coordination, this coordination remains weak in practice.

• The recommendation by the WWF and IUCN report to consider grasslands in an integrated manner across all three Rio Conventions offers a practical solution in this direction.

Implications for India

• The state of grasslands in India is a microcosm of this global problem. Fragmented responsibilities across 18 ministries, the concept of "wastelands," and a forest-centric carbon policy—all hinder the conservation of grasslands.
• While the Union Environment Ministry views grasslands as potential areas for afforestation, the "Wastelands Atlas of India," published by the Ministry of Rural Development, often identifies these same grasslands as land that could be converted to other uses. This policy contradiction demonstrates that grasslands remain unrecognized as independent and valuable ecosystems.
• If policy uniformity is established across governance systems, from the national to the multilateral level, positive impacts can be realized through mechanisms such as country-specific Nationally Determined Contributions (NDCs).
• One of India's eight NDCs aims to create an additional carbon sink of 2.5 to 3 billion tonnes of CO₂ equivalent by 2030 through increased forest and tree cover.
• However, if grasslands are also formally recognized as an effective carbon sink, this target could become more scientific, inclusive, and practical.

Way Forward

• It is essential to move beyond the mindset of considering grasslands merely as vacant or underutilized land. Bringing grasslands to the center of policy is essential to achieve all three goals: climate change, biodiversity conservation, and social justice. This requires:
• Grasslands are recognized as unique and valuable ecosystems.
• They are included in national and global climate plans (NDCs).
• Local communities are provided with land and resources.

Conclusion

Conferences like COP 30 must now move beyond the narrow scope of "carbon management" and adopt a holistic, "biome-based" approach. The United Nations' declaration of 2026 as the "International Year of Grasslands and Pastoral Communities" is an opportunity for India to reform its national policies and present a science-based and community-led conservation model to the global stage.

SHANTI Act 2026: Recasting India’s Nuclear Liability and Private Entry into Atomic Power

Why in the News ?

Parliament has passed the SHANTI Act, introducing sweeping reforms to India’s nuclear power framework by opening the sector to private participation and significantly modifying the country’s nuclear liability regime.

Background and Context

India’s civil nuclear programme has long been dominated by state control under the Atomic Energy framework. However, nuclear energy contributes only about 3% of India’s electricity generation, despite ambitious expansion targets:

• Target of 10 GW by 2000 → Achieved: 2.86 GW
• Target of 20 GW by 2020 → Achieved: 6.78 GW

Key constraints included:

• High capital costs
• Public safety concerns
• Complex liability provisions
• Limited foreign supplier participation

Globally, nuclear accidents such as Three Mile Island accident, Chernobyl disaster, and Fukushima Daiichi nuclear disaster exposed design flaws, emergency failures, and supplier vulnerabilities. These events shaped international nuclear liability norms.

India’s earlier framework was seen as uniquely stringent compared to global conventions, affecting foreign investment inflows. The SHANTI Act seeks to realign India’s system with international practices.

Background of Nuclear Liability in India

India’s liability regime was governed by the Civil Liability for Nuclear Damage Act (CLNDA).

Key Features of CLNDA

• Enacted after India signed the Convention on Supplementary Compensation (CSC).
• Ensured prompt compensation to victims of nuclear accidents.
• Introduced the unique “right of recourse,” allowing operators to seek compensation from suppliers for defective equipment.
• Section 46 allowed victims to pursue remedies under other laws, including criminal law.

While strengthening accountability, suppliers argued that these provisions exposed them to unlimited liability, discouraging participation in India’s nuclear market.

Key Features of the SHANTI Act

1. Opening the Sector to Private Entities

The Act allows private companies to operate nuclear power plants, ending the Union government’s exclusive control. This marks a major structural shift in India’s atomic governance model.

2. Supplier Indemnity & Removal of Right of Recourse

• Liability is channelled exclusively to the operator.
• The operator’s right of recourse against suppliers is removed.
• Suppliers cannot be sued for defects, even if contributing to an accident.

This aligns India’s framework with international liability conventions.

3. Liability Caps and Amendments

• Operator liability capped between ₹100 crore (small plants) and ₹3,000 crore (large plants).
• Total accident liability capped at 300 million Special Drawing Rights (≈ ₹3,900 crore) including Centre’s contribution.
• Omission of Section 46, limiting victims’ ability to seek remedies under other laws.

4. Regulatory Structure

The Act provides legislative backing for the Atomic Energy Regulatory Board (AERB).

However:

• Members are selected by a committee constituted by the Atomic Energy Commission.
• Concerns remain about regulatory independence.

Liability Caps vs Potential Damages

Historical disasters illustrate the scale of nuclear risk:

• Estimated cost of Fukushima: ≈ ₹46 lakh crore
• Estimated Belarus losses from Chernobyl: ≈ ₹21 lakh crore

In contrast:

• India’s total liability cap: ≈ ₹3,900 crore

This gap raises concerns that statutory compensation may cover only a fraction of potential damages in a major disaster.

Safety and Moral Hazard Concerns

• The Act indemnifies operators for accidents caused by “grave natural disasters.”
• This departs from India’s earlier absolute liability principle for hazardous industries.

Critics argue:

• Liability caps may create moral hazard, reducing incentives for maximum safety investment.
• Natural disasters like tsunamis (as seen in Fukushima) cannot be treated as unforeseeable in nuclear design planning.

Economic and Strategic Implications

1. Boost to Investment

The Act may:

• Attract private and foreign capital
• Facilitate technology transfer
• Accelerate plans for 100 GW nuclear capacity by 2047

2. High Capital Costs

Example:

• Two Westinghouse AP1000 reactors in the U.S. cost ~$18 billion each.

Small Modular Reactors (SMRs), though promising, remain largely untested and may involve higher per-unit costs.

3. Energy Security

Nuclear energy offers:

• Low carbon emissions
• Stable baseload power
• Diversification from fossil fuels

However, financial viability and public trust remain crucial.

Significance of the SHANTI Act

1. Structural Reform: Ends exclusive state control in nuclear operations.
2. Global Alignment: Harmonises India’s liability framework with international norms.
3. Investment Facilitation: Reduces legal uncertainties for suppliers.
4. Energy Transition Support: Supports long-term clean energy goals.
5. Governance Debate: Raises questions on accountability and regulatory independence.

Challenges and Way Forward

Challenges

• Ensuring independent nuclear regulation
• Addressing compensation adequacy concerns
• Managing public perception and trust
• Balancing investment with safety

Way Forward

• Strengthen AERB’s statutory independence
• Periodically revise liability caps for inflation and risk assessment
• Enhance disaster preparedness frameworks
• Ensure transparency in reactor design and safety audits
• Promote diversified clean energy alongside nuclear expansion

Kapilash Wildlife Sanctuary: Forest Diversion for CRRR Raises Conservation Debate

Why in the News ?

The Standing Committee of the National Board for Wildlife (NBWL) has approved the diversion of 4.68 hectares of forest land from the Kapilash Wildlife Sanctuary for the construction of the 111 km six-lane Capital Region Ring Road (CRRR) project.

The decision has triggered discussions on balancing infrastructure development with wildlife conservation.

Background and Context

India’s rapid urbanisation and economic growth have increased the demand for:

• Expressways and ring roads
• Regional connectivity corridors
• Urban decongestion infrastructure

At the same time, infrastructure expansion often intersects with protected forest areas and wildlife habitats, raising concerns over:

• Habitat fragmentation
• Wildlife corridors
• Human-animal conflict

Under the Wildlife (Protection) Act, 1972, diversion of land within protected areas requires approval from the NBWL’s Standing Committee. The recent clearance for land diversion in Kapilash Wildlife Sanctuary highlights the delicate balance between development and ecological preservation.

About Kapilash Wildlife Sanctuary

• Location: Dhenkanal district, Odisha
• Forest Type: Eastern Highlands moist deciduous forest
• Legal Status: Notified Wildlife Sanctuary

The sanctuary forms part of the Eastern Ghats landscape and plays an important ecological role in central Odisha.

Vegetation and Flora

The sanctuary is dominated by:

• Sal (Shorea robusta) forests
• Associated species such as:
  • Amla
  • Teak
  • Kadamba

The moist deciduous ecosystem supports rich undergrowth and seasonal diversity, contributing to:

• Carbon sequestration
• Soil conservation
• Water retention

Faunal Diversity

Kapilash Wildlife Sanctuary supports diverse wildlife, including:

Mammals

• Elephants
• Jungle cats
• Sloth bears
• Spotted deer
• Jackals
• Pangolins
• Porcupines

Avifauna

• Peacocks
• Junglefowl
• Kingfishers
• Various resident and migratory birds

Reptiles

• Several reptilian species adapted to moist deciduous habitats

The sanctuary contributes to maintaining ecological connectivity in Odisha’s forest landscape.

The CRRR Project and Forest Diversion

The proposed Capital Region Ring Road (CRRR):

• Length: 111 km
• Purpose: Improve connectivity and decongest urban traffic
• Forest diversion: 4.68 hectares within sanctuary limits

Although the diverted area is relatively small, concerns include:

• Potential habitat fragmentation
• Disturbance to wildlife movement
• Increased vehicular traffic and noise pollution

Mitigation measures such as wildlife crossings, underpasses, and compensatory afforestation are expected to be part of project conditions.

Significance of the Issue

1. Development vs Conservation Debate

The clearance highlights the ongoing challenge of reconciling:

• Infrastructure growth
• Biodiversity protection

2. Role of NBWL

The NBWL plays a critical regulatory role in evaluating:

• Ecological impact
• Alternative alignments
• Mitigation strategies

3. Ecological Importance of Eastern Ghats

Kapilash lies within the Eastern Ghats biodiversity zone, which:

• Hosts endemic species
• Acts as a climate buffer
• Supports tribal and rural livelihoods

4. Human-Wildlife Interface

Road expansion may increase:

• Wildlife mortality due to vehicle collisions
• Human-wildlife conflict

5. Sustainable Infrastructure Planning

The case underscores the need for:

• Environmentally sensitive road design
• Wildlife corridors and eco-bridges
• Long-term ecological impact assessment

Challenges and Way Forward

Challenges

• Habitat fragmentation
• Wildlife corridor disruption
• Environmental degradation from increased traffic
• Ensuring compliance with mitigation measures

Way Forward

• Construct wildlife underpasses and overpasses
• Strengthen environmental monitoring mechanisms
• Ensure compensatory afforestation of high ecological value
• Integrate ecological impact into urban planning
• Promote landscape-level conservation planning

CPI Base 2024 Series: Modernising India’s Retail Inflation Framework

Why in the News ?

On February 12, 2026, the Ministry of Statistics and Programme Implementation (MoSPI) released India’s first retail inflation data under the new Consumer Price Index (CPI) series (Base Year: 2024=100).

• Retail inflation for January 2026: 2.75% (provisional)
• This replaces the earlier 2012 base year.
• The revision is based on findings of the Household Consumption Expenditure Survey (HCES) 2023–24.

This marks a structural overhaul of how India measures the cost of living.

Why a New CPI Series ?

India’s economy has undergone significant structural transformation over the past decade:

• Rising share of services
• Expansion of digital consumption
• Shift toward cleaner fuels (CNG/PNG)
• Changing dietary patterns
• Growth of online marketplaces

The CPI is the primary inflation gauge for the Reserve Bank of India (RBI) and its Monetary Policy Committee (MPC), which operates under the inflation-targeting framework of 4% ± 2%.

The CPI is also used for:

• Dearness Allowance (DA) revisions
• Poverty estimation
• Real income calculations
• Welfare transfers
• GDP deflation

Updating the base year ensures inflation measurement reflects current consumption realities and improves macroeconomic calibration.

Key Structural Changes in the New CPI

1. Updated Base Year

• Changed from 2012=100 to 2024=100.
• Enhances contemporary relevance.

2. International Classification Alignment

The new CPI adopts 12 consumption divisions in line with COICOP 2018 (Classification of Individual Consumption According to Purpose).

• Earlier structure: 6 broad groups
• Now: 12 granular divisions

This enhances global comparability and methodological robustness.

3. Expanded Basket of Items

• Total items increased from 299 to 358
  • Goods: 259 → 308
  • Services: 40 → 50

Newly Added Items:

• Rural house rent (introduced for first time)
• Online media and streaming services
• Value-added dairy products
• Barley products
• Pen drives and external hard disks
• Attendant and babysitter services
• Exercise equipment
• Cleaner fuels (CNG/PNG)

Removed Items:

• VCR/VCD/DVD players
• Tape recorders and radios
• CD/DVD cassettes
• Second-hand clothing
• Coir/rope

These changes reflect technological obsolescence and lifestyle shifts.

4. Wider Data Collection Network

• Rural markets: 1,181 → 1,465
• Urban markets: 1,114 → 1,395
• Inclusion of 12 online marketplaces

The integration of digital price data represents a major methodological advancement.

Revised Weight Structure: Changing Consumption Patterns

Food and Beverages

• Weight reduced from 45.86% → 36.75%
• Implication: Reduced short-term volatility, as food prices are typically unstable.
• Food remains the largest component.

Housing (Expanded Category)

• Weight increased from 10.07% → 17.67%
• Now includes:
  • Water
  • Electricity
  • Gas
  • Other fuels
  • Rural house rent

This significantly improves representativeness of household expenditure.

Inflation Numbers (January 2026)

Headline CPI Inflation: 2.75%

• Rural: 2.73%
• Urban: 2.77%

Food Inflation (CFPI): 2.13%

• Rural: 1.96%
• Urban: 2.44%

Housing Inflation: 2.05%

• Rural: 2.39%
• Urban: 1.92%

Since this is the first release under the new base, long-term historical comparison is limited. A linking factor has been provided to compute backward-compatible values up to 2013.

Significance of the New CPI Series

1. Improved Monetary Policy Signals

Lower food weight may reduce volatility, providing clearer inflation signals to the RBI.

2. Better Reflection of Modern Consumption

Captures:

• Digital economy expansion
• Services growth
• Cleaner energy transition

3. International Comparability

Alignment with COICOP enhances global benchmarking and statistical credibility.

4. Enhanced Welfare Targeting

More accurate inflation measurement improves:

• Real income assessment
• Welfare transfer design
• Fiscal policy calibration

5. Strengthening Statistical Architecture

Represents modernization of India’s macroeconomic measurement framework.

Challenges and Way Forward

1. Time Series Break

• New base disrupts long-term comparability.
• Linking factors may not perfectly replicate old trends.

Way Forward: Increase transparency in methodology and periodically update base years (every 5–10 years).

2. Food Weight Debate

• India remains a lower-middle-income economy where food inflation significantly impacts welfare.
• Way Forward: Maintain sensitivity to food price shocks in policy responses.

3. Rural Representation

• Informal consumption may still be underreported.
• Way Forward: Strengthen rural data infrastructure and survey mechanisms.

4. Online Price Volatility

• Digital marketplace prices fluctuate dynamically.
• Way Forward: Develop real-time digital price monitoring systems.

Idukki Hydroelectric Project at 50: Five Decades of Powering Kerala’s Growth

Why in the News ?

The Idukki Hydroelectric Project, Kerala’s largest hydel power project, has completed 50 years of operation. Over five decades, the Moolamattom underground power plant has generated 115,852.672 million units (MU) of electricity, marking a historic milestone in India’s hydroelectric development.

Background and Context

Hydroelectric power has been central to Kerala’s energy strategy due to:

• Abundant rainfall
• Western Ghats’ topography
• Numerous west-flowing rivers

The Periyar River, Kerala’s longest river, provides the foundation for the Idukki project. Conceived in the mid-20th century and commissioned in the 1970s, the project aimed to address:

• Rising electricity demand
• Industrial expansion
• Agricultural electrification
• Urbanisation in Kerala

At a time when India was focusing on large multipurpose river valley projects, Idukki emerged as a landmark engineering achievement in southern India.

About the Idukki Hydroelectric Project

• Location: Across the Periyar River in Idukki district, Kerala
• Type: Hydroelectric power project
• Operator: Kerala State Electricity Board (KSEB)
• Status: Largest hydroelectric project in Kerala

The project consists of three dams:

1. Idukki Dam
2. Cheruthoni Dam
3. Kulamavu Dam

Together, they create a large reservoir system to facilitate power generation.

Engineering and Structural Features

1. Idukki Arch Dam

• One of the highest ten arch dams in the world.
• Third highest in India after:
  • Tehri Dam
  • Bhakra Nangal Dam
• First dam in Asia constructed as a double-curvature arch dam.
• Second such dam in the world.

2. Moolamattom Powerhouse

• Houses the underground power station.
• The longest underground power station in India.
• Contains the largest pressure shaft in the country.

The underground design enhances:

• Structural stability
• Security
• Efficient energy conversion

Power Generation and Performance

Over 50 years, the Moolamattom power plant has:

• Generated 115,852.672 million units (MU) of electricity.
• Played a crucial role in stabilising Kerala’s power supply.

Hydropower remains vital for:

• Peak load management
• Grid stability
• Renewable energy contribution

Although Kerala now supplements hydropower with thermal and renewable sources, Idukki remains a backbone of the state’s energy infrastructure.

Significance of the Idukki Project

1. Energy Security for Kerala

The project significantly reduced dependence on imported power and fossil fuels, ensuring stable electricity supply.

2. Renewable and Clean Energy

Hydropower contributes to:

• Low carbon emissions
• Climate-friendly energy mix
• Support for India’s net-zero goals

3. Engineering Excellence

The double-curvature arch dam design and underground powerhouse represent milestones in Indian civil engineering.

4. Economic Development

Reliable electricity has supported:

• Industrialisation
• IT sector growth
• Tourism
• Agricultural productivity

5. Strategic Role in Flood Control

While primarily a power project, the reservoir system also aids in:

• Water regulation
• Flood moderation during monsoons

Challenges and Way Forward

Challenges

• Aging infrastructure after five decades
• Sedimentation in reservoirs
• Climate variability affecting rainfall patterns
• Environmental and ecological concerns

Way Forward

• Modernisation and technological upgrades
• Strengthening dam safety audits
• Integrating hydropower with solar and wind energy
• Enhancing climate resilience measures
• Promoting sustainable reservoir management

Valley of the Kings: Tamil-Brahmi Inscriptions Hint at Ancient India–Egypt Contacts

Why in the News ?

Two researchers have identified nearly 30 inscriptions in Tamil-Brahmi, Prakrit, and Sanskrit on tombs in the Valley of the Kings, Egypt. The discovery has sparked renewed interest in ancient India–Egypt maritime and cultural linkages, especially during the early historic period.

Background and Context

The discovery of Indian-language inscriptions in Egypt points toward possible transcontinental trade and cultural interactions between the Indian subcontinent and ancient Mediterranean civilisations.

India maintained vibrant maritime trade links with:

• Egypt
• The Roman Empire
• West Asia

Particularly during the Sangam age and early centuries CE, South Indian traders were active across the Red Sea and Mediterranean networks.

If authenticated, the inscriptions could:

• Strengthen evidence of early Indian merchant presence abroad
• Expand understanding of Indo-Mediterranean cultural exchange
• Provide insights into mobility of traders, artisans, and pilgrims

About the Valley of the Kings

The Valley of the Kings is one of the most important archaeological sites in Egypt.

• It served as the burial site of pharaohs of ancient Egypt.
• It formed part of the ancient city of Thebes (modern Luxor).
• The pharaohs buried here ruled between 1539 and 1077 BCE, during Egypt’s New Kingdom period.

The tombs were:

• Carved into rocky hillsides
• Concealed, with only doorways marking their entrance
• Decorated with elaborate paintings and inscriptions

In 1979, UNESCO designated the Valley of the Kings as part of the World Heritage Site of ancient Thebes.

Tamil-Brahmi and Early Indian Scripts

Tamil-Brahmi Script

• An early variant of the Brahmi script used to write Old Tamil.
• Dates back to around the 3rd century BCE.
• Found in cave inscriptions and trade-related contexts in South India and Sri Lanka.

Prakrit and Sanskrit

• Prakrit was widely used in inscriptions during the Mauryan and post-Mauryan periods.
• Sanskrit gained prominence in inscriptions from the early centuries CE onward.

The presence of these scripts in Egypt may indicate:

• Merchant guild activity
• Trade caravans
• Religious or cultural interactions

India–Egypt Maritime Connections

Ancient maritime trade routes connected:

• South Indian ports such as Muziris (Kerala coast)
• Red Sea ports in Egypt
• Mediterranean markets

Indian exports included:

• Spices
• Textiles
• Precious stones
• Ivory

Roman and Egyptian imports into India included:

• Gold and silver coins
• Wine
• Glassware

Classical texts such as the Periplus of the Erythraean Sea describe robust Indo-Roman trade networks.

Significance of the Discovery

1. Evidence of Early Globalisation

The inscriptions may serve as tangible proof of:

• Cross-cultural mobility
• Long-distance trade networks
• Early forms of global economic integration

2. Cultural Diplomacy and Shared Heritage

Such findings can strengthen:

• India–Egypt cultural cooperation
• Academic collaboration
• Heritage diplomacy

3. Expanding Historical Understanding

If validated, the inscriptions may:

• Push back timelines of Indian overseas presence
• Offer new insights into merchant guilds and diasporic communities

4. Maritime History of India

The discovery reinforces India’s historical identity as a maritime trading civilisation with extensive overseas networks.

5. Archaeological and Epigraphic Importance

Epigraphic evidence is crucial because:

• Inscriptions provide direct historical testimony
• They reveal names, professions, religious affiliations, and trade details

Challenges and Way Forward

Challenges

• Authenticating the inscriptions
• Establishing precise chronology
• Avoiding speculative historical conclusions
• Preserving fragile archaeological evidence

Way Forward

• Collaborative Indo-Egyptian archaeological research
• Advanced epigraphic analysis and carbon dating
• Publication in peer-reviewed journals
• Conservation-focused excavation practices