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  • Shanti Bill: How India is overhauling its nuclear power regime

    Why in the News?

    The Sustainable Harnessing and Advancing Nuclear Energy for Transitioning India (SHANTI) Bill, 2025 was passed by Parliament, replacing two foundational laws, the Atomic Energy Act, 1962 and the Civil Liability for Nuclear Damage Act, 2010. This marks the first comprehensive overhaul of India’s nuclear power regime since independence. 

    Introduction

    India’s nuclear energy sector has historically been characterised by exclusive state control, rigid liability provisions, and limited regulatory autonomy. While these safeguards prioritised safety, they also constrained capacity expansion, foreign collaboration, and private investment. The SHANTI BILL is significant as India targets 100 GW of nuclear capacity by 2047, compared to the present capacity of around 7.5 GW. This highlights a sharp departure from the earlier state-monopoly and supplier-deterrent framework.

    Why was the overhaul needed?

    1. Outdated legal framework: The Atomic Energy Act, 1962 and the Civil Liability for Nuclear Damage Act, 2010 were misaligned with current energy demands, global best practices, and advanced reactor technologies.
    2. Investment deterrence: Unlimited and ambiguous supplier liability under the 2010 law discouraged private and foreign participation, slowing capacity addition.
    3. Low capacity growth: Nuclear capacity stagnated at ~7.5 GW despite long-term targets, reflecting structural bottlenecks rather than technological limits.
    4. Energy transition pressures: Rising electricity demand and climate commitments required reliable, non-fossil baseload power beyond renewables.
    5. Regulatory concerns: Lack of statutory backing for the nuclear regulator raised issues of autonomy, credibility, and public trust.

    Structural Reset of the Nuclear Power Framework

    Legislative Consolidation and Policy Shift

    1. Replacement of legacy laws: Repeals the Atomic Energy Act, 1962 and the Civil Liability for Nuclear Damage Act, 2010.
    2. Unified governance framework: Integrates safety regulation, liability norms, and sectoral participation within a single statute.
    3. Transition objective: Aligns nuclear expansion with India’s energy transition and net-zero commitments.

    Opening the Nuclear Sector to Private Participation

    Expansion of Eligible Operators

    1. Private sector entry: Allows private entities to own and operate nuclear power plants for the first time.
    2. Scope of activities: Covers construction, transport, storage, import, export, and handling of nuclear material.
    3. Mandatory authorisation: Requires Atomic Energy Regulatory Board (AERB) approval for all nuclear-related activities.

    Continued Strategic Control

    1. Exclusive central control: Retains government monopoly over enrichment, isotope separation, spent fuel reprocessing, and radioactive waste management.
    2. Security prioritisation: Prevents dilution of national security oversight over sensitive nuclear processes.

    Recalibration of Nuclear Liability Architecture

    Graded Liability Caps

    1. Capacity-linked liability: Introduces differential liability based on reactor size.
    2. Liability limits (₹ crore):
      1. Above 3600 MW: 3000
      2. 150-3600 MW: 1500
      3. 750-1500 MW: 750
      4. 150-750 MW: 300
      5. Below 150 MW and fuel processing units: 100
    3. Policy outcome: Improves investor certainty while retaining operator accountability.

    Supplier Liability Reconfiguration

    1. Removal of “supplier” clause: Eliminates direct supplier liability from the statutory framework.
    2. Contractual recourse: Permits operators to seek compensation from suppliers only through contractual agreements.
    3. Investment impact: Addresses a key deterrent that previously discouraged foreign reactor suppliers.

    Redefining Compensation and Accountability

    Right of Recourse Rationalisation

    1. Conditional applicability: Applies only where nuclear damage results from defective equipment or services.
    2. Exclusion of operational accidents: Shields suppliers from liability arising from operational lapses.

    Financial Security Mechanisms

    1. Insurance mandate: Requires operators to maintain insurance or financial security only up to the prescribed liability cap.
    2. State-owned exemptions: Exempts installations owned by the Union government from mandatory financial security.

    Strengthening Regulatory Autonomy and Oversight

    Statutory Empowerment of AERB

    1. Legal status: Grants statutory authority to the Atomic Energy Regulatory Board.
    2. Expanded mandate: Covers safety regulation, licensing, and enforcement across nuclear installations.
    3. Institutional clarity: Addresses long-standing concerns over regulatory dependence on the executive.

    Audit and Accountability Framework

    1. CAG oversight: Places AERB’s expenditure under the Comptroller and Auditor General.
    2. Reporting structure: Requires AERB reports to be tabled before the Atomic Energy Commission.
    3. Governance outcome: Enhances transparency without compromising operational independence.

    Penal Provisions and Enforcement

    1. Monetary penalties: Introduces fines for severe safety violations.
    2. Graded punishment: Differentiates between minor and grave offences.
    3. Earlier gap addressed: Fills the absence of monetary penalties in the previous liability regime.

    Nuclear Damage Claims and Grievance Redressal

    1. Dedicated commission: Establishes a Nuclear Damage Claims Commission.
    2. Adjudicatory mechanism: Enables compensation claims beyond the operator liability framework.
    3. Appeal provision: Allows appeals to the Electricity Appellate Tribunal.

    Conclusion

    The SHANTI Bill, 2025 marks a shift towards a regulated and investment-friendly nuclear energy framework while retaining strong state control over safety and strategic functions. By reforming liability norms and strengthening regulatory oversight, it seeks to remove structural constraints on nuclear expansion. Its success will depend on effective regulation, transparency, and sustained public confidence as nuclear power grows in India’s energy mix.

    PYQ Relevance

    [UPSC 2018] With growing energy needs should India keep on expanding its nuclear energy programme? Discuss the facts and fears associated with nuclear energy. 

    Linkage: The SHANTI Bill addresses the fears highlighted in the question, especially safety, liability, and accountability. This enables expansion of nuclear energy to meet growing energy needs through regulatory strengthening and private sector participation.

  • White Spot Disease

    Why in the News?

    • The Minister of Fisheries, Animal Husbandry and Dairying informed the Rajya Sabha about White Spot Disease

    About White Spot Disease

    • Highly contagious viral disease
    • Affects crustaceans such as prawns, yabbies, and crabs
    • Causes mass mortality in shrimp aquaculture

    Causative Agent

    • White Spot Syndrome Virus (WSSV)
    • Double stranded DNA virus
    • Genus: Whispovirus
    • Family: Nimaviridae

    Host Range

    • All decapod crustaceans belonging to order Decapoda
    • Includes prawns, shrimps, lobsters, and crabs
    • Occurs in marine, brackish, and freshwater environments

    Mode of Transmission

    • Vertical transmission
    From infected brood stock to post larvae
    • Horizontal transmission
    Through carrier animals
    By cannibalism of infected organisms

    Geographical Distribution

    • Reported from Bangladesh and eastward from India

    Among the following organisms, which one does not belong to the class of other three? (2014)

    (a) Crab 

    (b) Mite 

    (c) Scorpion 

    (d) Spider

  • Kheoni Wildlife Sanctuary

    Why in the News?

    • Forest Department officially recorded sightings of two Wild Dogs (Dholes) in Kheoni Wildlife Sanctuary

    About Kheoni Wildlife Sanctuary

    • Location: Madhya Pradesh
    • Connectivity: Linked through corridors with Ratapani Tiger Reserve
    • Vegetation Type: Dry deciduous forests

    Dhole (Asiatic Wild Dog)

    Basic Facts
    • Wild canid carnivorous species
    • Known for pack hunting behaviour

    Other Names
    • Indian wild dog, Whistling dog, Red wolf, Red dog and Mountain wolf

    Habitat
    • Dense forests, Scrub forests, Steppes, Mountains and Pine forests

    Distribution
    • Central Asia
    • Eastern Asia
    • Southeast Asia
    • In India, stronghold in Western Ghats and Eastern Ghats

    Conservation Status
    • IUCN Red List: Endangered
    • CITES: Appendix II
    • Wildlife Protection Act, 1972: Schedule II

    Recently there was a proposal to translocate some of the lions from their natural habitat in Gujarat to which one of the following sites? (2017)

    (a) Corbett National Park 

    (b) Kuno Palpur Wildlife Sanctuary 

    (c) Mudumalai Wildlife Sanctuary 

    (d) Sariska National Park

  • Freshwater Sponge

    Why in the News?

    • Scientists from Bose Institute studied freshwater sponges from the Sundarban delta
    • Identified their potential role as bioindicators of toxic metal pollution

    About Freshwater Sponges

    • Among the earliest multicellular eukaryotes
    • Play a key role in maintaining aquatic ecosystem health
    • Found in clean streams, lakes, rivers, and estuarine systems
    • Grow on sturdy submerged objects
    • Are filter feeders, filtering large volumes of water
    • Obtain food from water flow through the body and symbiotic algae

    Physical Features

    • Often appear green in colour
    • Green colour due to symbiotic algae living within sponge tissues

    Reproduction

    • Sexual reproduction
    • Asexual reproduction by fragmentation
    • Formation of gemmules
    Tiny, resistant reproductive bodies
    Can survive unfavourable conditions
    Germinate later to form new sponges

    Ecological Role and Significance

    • Act as bioindicators of water quality
    • Absorb toxic heavy metals such as arsenic, lead, and cadmium
    • Useful in monitoring pollution levels in freshwater and estuarine ecosystems
    • Show potential for bioremediation of polluted water bodies

    Which one of the following is a filter feeder? (2021)

    (a) Catfish 

    (b) Octopus 

    (c) Oyster 

    (d) Pelican

  • Annatto

    Why in the news?

    • As informed by the Council of Scientific and Industrial Research (CSIR), the CSIR–Central Food Technological Research Institute (CFTRI), Mysuru has undertaken four Grant-in-Aid projects related to the study and development of annatto.

    What is Annatto?

    • Annatto is a natural food colouring and flavouring agent.
    • Obtained from the seeds of the achiote tree (Bixa orellana).

    Origin & Botanical Facts

    • Scientific name: Bixa orellana
    • Native region: Tropical regions of the Americas
    • Plant type: Shrub/small tree
    • Usable part: Seed coating

    Key Chemical Constituents

    • Contains carotenoids (plant pigments)
      • Responsible for yellow-orange colour
    • Rich in:
      • Antioxidants
      • Tocotrienols (a form of Vitamin E)
      • Antimicrobial compounds

    Uses of Annatto

    Food Industry

    • Accounts for ~70% of natural food colours used globally
    With reference to ‘palm oil,’ consider the following statements: (2021)

    1. The palm oil tree is native to Southeast Asia. 

    2. Palm oil is a raw material for some industries producing lipstick and perfumes. 

    3. Palm oil can be used to produce biodiesel. 

    Which of the statements given above are correct? 

    (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2, and 3

  • Animal Husbandry Infrastructure Development Fund (AHIDF)

    Why in the News?

    • In a written reply in the Rajya Sabha, the Minister of Fisheries, Animal Husbandry and Dairying informed that ₹10,320 crore worth of loans have been sanctioned under AHIDF.

    About AHIDF

    • The Animal Husbandry Infrastructure Development Fund (AHIDF) is a Central Sector Scheme.
    • Total outlay: ₹15,000 crore
    • Announced under the Prime Minister’s Atmanirbhar Bharat Abhiyan stimulus package.
    • Objective: Boost investment in animal husbandry infrastructure.

    Implementing Agency

    • Department of Animal Husbandry and Dairying
    • Ministry of Fisheries, Animal Husbandry and Dairying

    Eligible Beneficiaries

    • Farmer Producer Organisations (FPOs)
    • Private companies
    • Individual entrepreneurs
    • Section 8 companies
    • Micro, Small and Medium Enterprises (MSMEs)

    Financial Assistance & Benefits

    • Margin money: Minimum 10% by beneficiary
    • Loan component: Up to 90% through scheduled banks
    • Interest subvention: 3% by Government of India
    • Repayment period: Maximum 8 years
      • Includes 2-year moratorium
    Consider the following statements about the Rashtriya Gokul Mission: (2025)

    I. It is important for the upliftment of rural poor as majority of low producing indigenous animals are with small and marginal farmers and landless labourers. 

    II. It was initiated to promote indigenous cattle and buffalo rearing and conservation in a scientific and holistic manner. 

    Which of the statements given above is/ are correct? 

    (a) I only (b) II only (c) Both I and II (d) Neither I nor II

  • Kavach System – Automatic Train Protection (ATP)

    Why in the News?

    • The Union Railway Minister informed the Lok Sabha during the Winter Session of Parliament that the indigenously developed Kavach system has been fully commissioned on over 2,000 km of the Indian Rail network.
    • The rollout is progressing at a very fast pace across multiple railway zones.

    What is Kavach?

    • Kavach is an indigenous Automatic Train Protection (ATP) system.
    • It is designed to prevent train collisions, over-speeding, and signal passing at danger (SPAD).
    • It enhances operational safety through real-time monitoring and automatic intervention.

    Development and Agencies Involved

    • Developed by:
      • Research Design and Standards Organisation (RDSO) under Indian Railways
    • Industry partners:
      • Medha Servo Drives Pvt. Ltd.
      • HBL Power Systems Ltd.
      • Kernex Microsystems

    Current Status (as of December 2025)

    • 7,129 km of Optical Fibre Cable laid
    • 860 telecom towers installed
    • 767 railway stations connected to data centres
    • Trackside equipment deployed along 3,413 km
    • 4,154 locomotives equipped with Kavach
    • Around 40,000 technicians and operators trained

    Impact

    • Consequential railway accidents reduced by nearly 90%
    • Accidents declined from 135 (2014) to about 11 currently
    • Demonstrates tangible improvement in railway safety outcomes
    Consider the following statements: (2025)

    I. Indian Railways have prepared a National Rail Plan (NRP) to create a future ready railway system by 2028.

    II. ‘Kavach’ is an Automatic Train Protection system developed in collaboration with Germany.

    III. ‘Kavach’ system consists of RFID tags fitted on track in station section.

    Which of the statements given above are not correct?

    (a) I and II only 

    (b) II and III only 

    (c) I and III only 

    (d) I, II and III

  • How is the Aravalli range to be protected

    Introduction

    The Aravalli range, among the world’s oldest mountain systems, functions as a critical ecological barrier preventing desertification of the Indo-Gangetic plains. Stretching over 650 km from Gujarat to Delhi, the range plays a central role in climate moderation, groundwater recharge, and biodiversity conservation. However, decades of inconsistent definitions, regulatory violations, and mining pressures have degraded large tracts, necessitating renewed judicial intervention.

    Why in the News

    The Supreme Court, in a recent order, settled on a uniform definition of the Aravalli hills and ranges, paused the grant of fresh mining leases, and directed preparation of a Sustainable Mining Management Plan (SMMP). This marks a decisive shift from fragmented state-level interpretations that previously enabled unregulated mining. The intervention is significant as it directly addresses regulatory dilution, illegal extraction, and ecological degradation across Delhi-NCR, Haryana, Rajasthan, and Gujarat.

    Ecological and Strategic Significance of the Aravalli Range

    1. Ecological Barrier: Prevents eastward expansion of the Thar Desert into Haryana, Rajasthan, and western Uttar Pradesh.
    2. Climate Regulation: Supports regional climate stability and moderates extreme temperatures.
    3. Groundwater Recharge: Functions as a major recharge system for aquifers supplying urban and rural settlements.
    4. River Systems Support: Acts as a source region for rivers such as Chambal, Sabarmati, and Luni.
    5. Biodiversity Reservoir: Hosts diverse flora and fauna across forested and semi-arid ecosystems.
    6. Mineral Endowment: Contains limestone, marble, granite, zinc, copper, gold, and tungsten-driving extraction pressures.

    Historical Mining Pressure and Regulatory Failure

    1. Mining Legacy: Stone and sand mining persisted for decades due to mineral richness.
    2. Environmental Degradation: Caused air pollution, groundwater depletion, and ecosystem fragmentation.
    3. Legal Non-Compliance: Mining frequently operated without valid environmental clearances.
    4. International Commitments: Violates India’s obligations under the UN Convention to Combat Desertification.
    5. Judicial Trigger: Supreme Court intervention followed systemic regulatory failure at state levels.

    Early Executive and Judicial Interventions

    1. MoEF Restrictions (1990s): Issued mining restrictions across the Aravallis.
    2. Persistent Violations: State-level enforcement failures undermined restrictions.
    3. Supreme Court Ban (2009): Imposed a blanket ban on mining in Faridabad, Gurgaon, and Mewat.
    4. Fresh Mining Leases: Prohibited new leases and renewals pending comprehensive assessment.
    5. CEC Mandate: Central Empowered Committee tasked with examining mining impacts.

    Central Empowered Committee Findings and Recommendations

    1. Landscape-Level Assessment: Recommended macro-level environmental impact assessment.
    2. Mining Prohibition Zones: Advised bans in ecologically sensitive areas.
    3. Water Protection: Highlighted risks to recharge zones and water bodies.
    4. Strict Regulation: Suggested prohibition of mining until proper mapping and impact studies.
    5. Implementation Timeline: Recommendations placed before the Court after delayed compliance.

    Need for a Uniform Definition of the Aravallis

    1. State Inconsistencies: Different criteria used by states to identify Aravalli land.
    2. FSI Criteria (2010):
      1. Slope ≥ 3°
      2. Hill Height ≥ 100 m
      3. Valley Width ≥ 500 m
      4. Enclosed Area Criteria
    3. Regulatory Loopholes: Narrow definitions enabled mining below 100 m height.
    4. Scientific Objections: CEC flagged exclusion of slopes and foothills as ecologically flawed.
    5. Judicial Resolution: Supreme Court approved a nationally consistent definition.

    Supreme Court Directions on Mining Governance

    1. Sustainable Mining Management Plan: Directed preparation of SMMP for Aravalli-NCR.
    2. Absolute Prohibition: Banned mining in highly sensitive zones.
    3. Conditional Permissions: Allowed limited mining under strict regulatory oversight.
    4. Carrying Capacity Assessment: Mandated ecological thresholds before approvals.
    5. Restoration Measures: Required rehabilitation and restoration planning.

    Green Wall Project and Landscape Restoration

    1. Project Launch (June 2025): Centre initiated the Aravalli “Green Wall”.
    2. Geographic Scope: 5-km buffer across 29 districts in Gujarat, Rajasthan, Haryana, and Delhi.
    3. Restoration Target: 26 million hectares of degraded land by 2030.
    4. Climate Co-Benefits: Enhances carbon sequestration and desertification control.
    5. Policy Integration: Aligns with land degradation neutrality goals.

    Why Mining Has Not Been Completely Banned

    1. Past Experience: Total bans encouraged illegal syndicates and violent extraction.
    2. Regulatory Vacuum: Blanket prohibitions weakened oversight mechanisms.
    3. Calibrated Approach:
      1. Existing legal mines regulated stringently.
      2. Ecologically sensitive zones declared no-go areas.
    4. Governance Focus: Emphasis on enforceable regulation rather than prohibition.

    Conclusion:

    Protecting the Aravalli range is essential not only for conserving an ancient geomorphic system but also for safeguarding north India from accelerating desertification, groundwater decline, and ecological instability. The Supreme Court’s insistence on a uniform definition, regulated mining, and landscape restoration marks a shift from fragmented governance to science-based environmental stewardship.

    PYQ Relevance

    [UPSC 2020] The process of desertification does not have climatic boundaries. Justify with examples.

    Linkage: The question examines the role of physiographic features and human interventions in driving desertification beyond climatic boundaries under GS-1. The Aravalli range functions as a natural barrier against desert spread, and its degradation demonstrates how desertification can advance into non-arid regions.

  • DHRUV64 Microprocessor

    Why in the News?

    India has unveiled DHRUV64, its first fully indigenously developed microprocessor, marking a major milestone in semiconductor self reliance and Atmanirbhar Bharat.

    About DHRUV64

    • Fully indigenous microprocessor developed in India
    • Developed by the Centre for Development of Advanced Computing (C DAC)
    • Part of the Microprocessor Development Programme (MDP)

    Key Technical Features

    • 64 bit dual core processor
    • Clock speed of 1.0 GHz ( Very low compared to recent chips like Snapdragan clock speed more 4.0 GHz)
    • Uses superscalar execution allowing multiple instructions simultaneously
    • Supports out of order execution for improved performance
    • Integrated communication and control functions
    • Uses FCBGA packaging, enabling compact and system ready design

    Potential Applications

    • Strategic applications and commercial computing
    • 5G infrastructure
    • Automotive electronics
    • Consumer electronics
    • Industrial automation
    • Internet of Things (IoT) systems

    Significance for India

    • Reduces dependence on foreign microprocessors
    • Strengthens domestic semiconductor ecosystem
    • Enables startups, academia and industry to design and test indigenous systems
    • Supports low cost prototype development for new system architectures
    • Enhances technological sovereignty and national security

    When the alarm of your smart-phone rings… which one of the following terms best applies to the above scenario? (2018)

    (a) Border Gateway Protocol 

    (b) Internet of Things 

    (c) Internet Protocol 

    (d) Virtual Private Network

  • Channa bhoi

    Why in the News?

    Scientists have discovered a new species of snakehead fish named Channa bhoi from the state of Meghalaya, adding to India’s freshwater biodiversity.

    About Channa Bhoi

    • Newly identified species of snakehead fish
    • Discovered from a small mountain stream near Iewmawlong village
    • Location: Ri Bhoi district, Meghalaya
    • Named after the Bhoi people, an indigenous group of the Khasi tribe inhabiting the region

    Taxonomic and Ecological Details

    • Belongs to the Gachua group of snakehead fishes
    • The Gachua group is known for high species diversity in the Eastern Himalayan region
    • Phylogenetic analysis shows it is a sister species to Channa bipuli, found in Northeast India

    Distinctive Physical Features

    • Bluish grey body colour
    • Each scale has minute black spots
    • Spots form eight to nine horizontal rows of broken lines along the body
    • Distinctive banding patterns on the pectoral fins
    • Unique colour pattern differentiates it from closely related species

    Significance of the Discovery

    • Highlights the rich freshwater biodiversity of Northeast India
    • Emphasises the importance of mountain stream ecosystems
    • Reflects ongoing discoveries in the Eastern Himalayan biodiversity hotspot

    Key Prelims Fact

    • With this discovery, the total number of Channa species recorded in India has increased to 26

    In a particular region in India, the local people train the roots of living trees into robust bridges across the streams. As the time passes, these bridges become stronger. These unique ‘living root bridges’ are found in (2015)

    (a) Meghalaya 

    (b) Himachal Pradesh 

    (c) Jharkhand 

    (d) Tamil Nadu