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GS Paper: GS3

  • Climate change is driven by human need and greed

    Introduction

    Climate change has long been discussed in terms of rising temperatures and carbon emissions, but historian Sunil Amrith reframes it as a moral and historical crisis. His work The Burning Earth explores how human ambition, industrialisation, and inequality have shaped the Anthropocene. The interview highlights that solving the crisis requires not just technology, but a transformation in values, governance, and global justice.

    Central Ideas and Dimensions

    1. Human Ambition and the Roots of the Climate Crisis
      1. Moral Dimension: Amrith draws from Mahatma Gandhi’s dictum, “The world has enough for everyone’s need but not enough for everyone’s greed.” Industrialisation, driven by greed rather than necessity, transformed humanity’s relationship with nature.
      2. Historical Continuity: Post-industrial societies viewed nature as a source of endless exploitation; colonised nations inherited these extractive systems.
      3. Colonial Legacy: European colonial powers intensified extraction in Asia and Africa, embedding global inequalities in resource use and emissions.
    2. Industrialisation and Technological Faith: A Limited Solution
      1. Technological Optimism: Many assume industrial progress can “fix” climate problems through innovation and decarbonisation.
      2. Historical Warning: Industrialisation was never morally neutral; it was driven by moral ambition and economic expansion.
      3. Inequality in Transition: The Global South is now being asked to decarbonise rapidly despite having contributed less to historical emissions.
      4. Example: The ‘Green Transition’ narrative often benefits rich economies while transferring economic burdens to poorer ones.
    3. Climate Change as a Political, not Merely Technical, Problem
      1. Political Process: Climate negotiations are shaped by historical responsibility and inequality in emission shares.
      2. Distribution of Responsibility: Developed countries hold disproportionate responsibility, yet developing countries bear heavier adaptation costs.
      3. Injustice of Geography: Those least responsible like communities in the Global South face the worst climate impacts.
      4. Global Debate: The question of who should pay and who should adapt is as pressing as the question of how to reduce emissions.
    4. Humanities and the Ethics of Climate Discourse
      1. Beyond Science: Amrith calls for humanities’ involvement, history, anthropology, and moral philosophy, to interpret climate change as a human story.
      2. Changing Relationship with Nature: Understanding industrialisation’s moral and emotional roots can help reshape our relationship with the planet.
      3. Broader Lens: Integrating social, cultural, and ethical frameworks prevents oversimplified “technological salvation” narratives.
    5. The Limits of Techno-fixes and the Role of Human Values
      1. Bill Gates’ View: Technology can solve climate change even if temperatures rise by 1.5°C.
      2. Amrith’s Counterpoint: Even if emissions stopped tomorrow, warming would continue due to locked-in carbon cycles.
      3. Moral Reorientation: Sustainable future demands restraint, compassion, and fairness, not mere efficiency or profit.
      4. Systemic Realisation: Human welfare, not human power, should guide policy; prosperity cannot be measured by GDP alone.

    Conclusion

    Amrith’s argument reframes the climate crisis as a mirror to human civilization reflecting not just carbon levels, but our collective morality. The path ahead demands ethical reawakening, equitable governance, and historical responsibility, not just green technology. Climate change is not a scientific failure; it is a civilizational test of whether humanity can outgrow its own greed.

    PYQ Relevance

    [UPSC 2017] ‘Climate Change’ is a global problem. How India will be affected by climate change? How Himalayan and coastal states of India will be affected by climate change?
    Linkage: Climate change is a recurring UPSC theme in GS 3 and Essays. This article adds depth by linking human greed and moral failure to India’s climate vulnerability, especially in Himalayan and coastal regions.

  • Where states stand on revenue collections, before and after GST

    Introduction

    Introduced in 2017, the Goods and Services Tax (GST) replaced multiple indirect taxes at both Central and State levels, including excise duty, service tax, and VAT, creating a unified national tax framework. The recent data released by the Central Government for October 2025 indicates a 4.6% year-on-year increase in total revenue collection to ₹1,95,936 crore. However, the state-wise analysis has revealed an emerging concern: while some states have achieved strong revenue growth, others are struggling to reach even pre-GST revenue-to-GDP ratios.

    Why in the News

    The latest data on GST revenue collection highlights contrasting fiscal trajectories across Indian states. Despite record-high GST collections nationally, several states’ tax-to-GDP ratios remain lower than before 2017, indicating a possible erosion of state fiscal autonomy. The issue has gained attention because:

    1. Sixteen states and Union Territories now earn a smaller share of revenue from GST than pre-GST taxes.
    2. The aggregate revenue from subsumed taxes has declined from 6.1% of GDP in 2015-16 to 5.5% in 2023-24.
    3. The average GST-to-GDP ratio over the past seven years is 2.6%, below the pre-GST average of 2.8%.
    4. This reversal is significant as it questions the efficacy of India’s largest tax reform and the viability of fiscal federalism under GST.

    How did GST Change the Tax Landscape?

    1. Unified Tax Framework: GST subsumed indirect taxes such as excise duty, VAT, and service tax under a single national structure, simplifying compliance.
    2. Revenue Flow Shift: Revenue previously collected by states under independent taxes now flows through a shared GST mechanism, altering fiscal control.
    3. Increased Central Dependence: States became dependent on GST compensation cess and Centre’s transfers for revenue stability, altering fiscal autonomy.
    4. Short-term Gains: Initially, GST led to better compliance and formalization, resulting in short-term revenue surges.

    How Are States Performing After GST?

    1. Diverse Outcomes: According to PRS Legislative Research, state-level GST revenues continue to trail the pre-GST levels as a share of GSDP.
    2. Declining Tax-to-GDP Ratio: Aggregate revenue from subsumed taxes fell from 6.1% (2015-16) to 5.5% (2023-24).
    3. Below-Average GST Performance: The seven-year average GST-to-GDP ratio (2.6%) is lower than the pre-GST average (2.8%).
    4. Top Performers: Maharashtra, Karnataka, Gujarat, Tamil Nadu, and Haryana have shown robust post-GST growth in tax collection.
    5. Lagging States: J&K, Punjab, Chhattisgarh, Madhya Pradesh, and Odisha recorded revenue decline from subsumed taxes as a percentage of GSDP.

    Which States Have Been Worst Affected?

    1. Northeastern States: Mizoram, Nagaland, Sikkim, Meghalaya, and Manipur saw an improvement in tax-to-GSDP ratios.
    2. Northern and Central States: Jammu & Kashmir, Punjab, Madhya Pradesh, Chhattisgarh, and Odisha saw a decline in subsumed tax revenues.
    3. Urban-Rural Divide: Industrial and service-oriented states benefited, while agrarian and resource-dependent states witnessed fiscal compression.
    4. GST Compensation End: After 2022, when the GST compensation guarantee ended, fiscal stress intensified for states heavily reliant on the compensation mechanism.

    What Does the Data Reveal About Fiscal Federalism?

    1. Centre-State Revenue Imbalance: 20 out of 36 states/UTs now collect less than 40% of their revenue from GST, deepening fiscal asymmetry.
    2. Medium-term Fiscal Impact: The 15th Finance Commission projected a GST-to-GDP ratio of 7%, but current data reflects underperformance.
    3. Long-term Fiscal Risks: Declining state revenue autonomy may affect social spending and capital expenditure, widening regional disparities.
    4. Compliance Inefficiency: Multiple tax slabs, refund delays, and compliance burdens continue to affect smaller states’ GST efficiency.

    Conclusion

    The GST has achieved its unification objective but has not yet ensured revenue equity across states. While high-compliance, industrial states have benefited, smaller and agrarian states remain fiscally strained. The data underscores the need for recalibrating the GST architecture, simplifying slabs, improving IT infrastructure, and enhancing fiscal transfers, to align with the spirit of cooperative federalism and fiscal balance.

    PYQ Relevance

    [UPSC 2019] Enumerate the indirect taxes which have been subsumed in the Goods and Services Tax (GST) in India. Also, comment on the revenue implications of the GST introduced in India since July 2017.

    Linkage: It evaluates the impact of GST on Centre-State revenue balance and indirect tax structure post-2017.

  • Panel seeks higher protection for Rhesus Macaque under Wildlife Act

    Why in the News?

    The Standing Committee of the National Board for Wildlife (SC-NBWL) chaired by Union Environment Minister has recommended reinstating the Rhesus Macaque (Macaca mulatta) under Schedule II of the Wildlife (Protection) Act, 1972.

    rhesus

    Back2Basics: Schedule II of the Wildlife (Protection) Act, 1972

    • Objective: Provides legal protection to species requiring conservation monitoring but not critically endangered.
    • Protection Scope: Hunting, capture, or trade prohibited except under extraordinary conditions such as disease or threat to human life.
    • Legal Provision: Section 11 authorises Chief Wildlife Wardens to grant permissions for justified exceptions.
    • Penalties: Imprisonment up to 3 years, or fine up to ₹25,000, or both; slightly lower than Schedule I provisions.
    • Species Included: Assamese macaque, Indian fox, Himalayan black bear, Indian cobra, large Indian civet, etc.
    • Distinction from Schedule I: Offers near-equivalent protection but allows limited regulation and control measures.
    • Authority: Central Government empowered under Section 61 to amend species inclusion or exclusion

    About Rhesus Macaque:

    • Scientific Name: Macaca mulatta, a species of Old World monkey native to South, Central, and Southeast Asia.
    • Distribution: Widest-ranging non-human primate, found in India, Nepal, Bhutan, Bangladesh, China, and Afghanistan.
    • Physical Traits: Brown or grey fur; body length 47–53 cm, tail 20–23 cm, weight 5–8 kg; strong sexual dimorphism.
    • Habitat: Highly adaptable; lives in forests, grasslands, riverine zones, agricultural lands, and even urban settlements.
    • Behaviour: Diurnal, semi-terrestrial, and social; organised in matrilineal troops (20–200 members) with complex vocal and gestural communication.
    • Diet: Omnivorous, feeds on fruits, seeds, roots, cereals, and occasionally invertebrates; uses cheek pouches for temporary food storage.
    • IUCN Status: Least Concern, due to wide distribution and high adaptability.
    • Legal Reclassification: Previously listed under Schedule II of the WPA, 1972, offering stringent protection against hunting, cruelty, illegal trade, and exploitation. After the 2022 amendments, it was shifted to Schedule IV (mid-level protection category with lesser punishments).
    • Scientific Relevance: Extensively used in biomedical research, instrumental in developing polio, rabies, smallpox vaccines, and in HIV/AIDS and neuroscience studies.
    • Human Conflict: Increasing crop raids, urban aggression, and food theft; declared vermin in Himachal Pradesh (2019) for selective culling in non-forest zones.

    How is the Culling of Vermin allowed in India?

    • Definition: Animals declared harmful or nuisance-causing, legally permitted for hunting to safeguard life, crops, or property.
    • Legal Provision: Section 62 of the Wildlife (Protection) Act, 1972 empowers the Central Government to declare species (excluding Schedule I) as vermin for specific regions and timeframes.
    • Earlier Classification: Schedule V (pre-2022) listed vermins such as rats, fruit bats, and common crows.
    • 2022 Amendment: Schedule V removed; Centre can now issue direct notifications declaring vermin status.
    • Declaration Process:
      • State government submits request citing local damage or risk.
      • MoEFCC evaluates ecological and administrative justification.
      • Centre issues notification for specified region and duration.
    • Examples:
      • Wild boar (Uttarakhand, Kerala, Goa)
      • Nilgai (Bihar, Uttar Pradesh)
      • Rhesus macaque (Himachal Pradesh, 2019)
      • Fruit bats and crows (select farming regions)
    • Legal Consequence: Once notified, the species loses protection, and hunting incurs no penalty during the declared period.
    • Ecological and Ethical Concerns: Risks of ecosystem imbalance and animal cruelty; experts advocate contraception, relocation, and scientific management instead.
    [UPSC 2022] If a particular plant species is placed under Schedule VI of the Wildlife Protection Act, 1972, what is the implication?
    Options: (a) A licence is required to cultivate that plant. *
    (b) Such a plant cannot be cultivated under any circumstances.
    (c) It is a Genetically Modified crop plant.
    (d) Such a plant is invasive and harmful to the ecosystem.

     

  • Senna spectabilis removed from 1,963 hectares of land in Mudumalai TR

    Why in the News?

    The Tamil Nadu Forest Department has successfully removed Senna spectabilis, a highly invasive tree species, from 1,963 hectares of the Mudumalai Tiger Reserve (MTR).

    Senna spectabilis removed from 1,963 hectares of land in Mudumalai TR

    Mudumalai Tiger Reserve

    • Location: Situated in Nilgiris District, Tamil Nadu, at the tri-junction of Tamil Nadu, Kerala, and Karnataka.
    • Area: Covers 321 sq. km, forming part of the Nilgiri Biosphere Reserve, India’s first biosphere reserve.
    • Terrain: Undulating landscape ranging from 960–1266 m elevation.
    • Rivers: The Moyar River flows through the reserve, supporting rich biodiversity.
    • Vegetation: Includes evergreen, moist and dry deciduous forests, teak, bamboo, and grasslands (vayals).
    • Flora: Contains wild relatives of cultivated plants like rice, turmeric, and ginger.
    • Fauna: Home to tigers, elephants, gaurs, sambars, leopards, blackbucks, wild dogs, and 8% of India’s bird species.
    • Boundaries: Shares borders with Bandipur Tiger Reserve (Karnataka) and Wayanad Wildlife Sanctuary (Kerala).
    • Cultural Note: The Oscar-winning documentary “The Elephant Whisperers” was filmed at the Theppakadu Elephant Camp inside MTR.

    About Senna spectabilis:

    • Origin: A fast-growing deciduous tree native to tropical America, introduced in India as an ornamental and shade plant.
    • Issues: Reaches 15–20 metres, produces thousands of seeds annually, spreading rapidly.
    • Invasive Impact: Dense canopy suppresses native trees and grasses, causes food scarcity for herbivores, and reduces biodiversity.
    • IUCN Status: Listed as ‘Least Concern’ but ecologically harmful in Indian forests.

    How was the eradication achieved?

    • Method: Threefold strategy- debarking mature trees, uprooting saplings with weed pullers, and mechanically clearing seedlings.
    • Duration: Large trees dry up in about 18 months after debarking.
    • Post-Removal Use: Felled trees used for paper production.
    • Objective: Restore native flora, improve wildlife forage, and ensure long-term ecosystem recovery.
    [UPSC 2018] Why is a plant called Prosopis juliflora often mentioned in news?

    Options: (a) Its extract is widely used in cosmetics.

    (b) It tends to reduce the biodiversity in the area in which it grows. *

    (c) Its extract is used in the synthesis of pesticides.

    (d) None of the above.

     

  • [7th November 2025] The Hindu Oped: Redraw welfare architecture, place a UBI in the centre

    PYQ Relevance

    [UPSC 2015] In what way could replacement of price subsidy with Direct Benefit Transfer (DBT) change the scenario of subsidies in India? Discuss.

    Linkage: The shift from price subsidies to Direct Benefit Transfers (DBT) improved efficiency and targeting in welfare delivery. Universal Basic Income (UBI) is the next step in this evolution, moving from targeted transfers to universal, unconditional income support that ensures inclusion and economic stability.

    Mentor’s Comment

    As automation, artificial intelligence, and widening inequality reshape global economies, India faces an urgent need to rethink its welfare model. Universal Basic Income (UBI) , once dismissed as utopian, is emerging as a viable economic tool to balance growth with inclusion, stabilize consumption, and future-proof citizens against technology-driven disruptions.

    Introduction and Why in the News

    India’s wealth gap is at a 75-year high, and technological transformation is outpacing job creation. The article argues that a Universal Basic Income could act as a stabilizer for an economy characterized by automation-led job loss, consumption inequality, and welfare fragmentation. UBI thus represents both an economic necessity and moral evolution, a reform that can ensure social security while sustaining demand in an AI-driven economy.

    Understanding UBI in the Economic Context

    1. Concept: A periodic, unconditional cash transfer to all citizens, regardless of income or employment.
    2. Economic Foundation: Acts as a floor for consumption and stabilizer of demand during economic downturns.
    3. Rationale in India: Addresses inefficiencies, leakages, and exclusions in existing welfare subsidies and improves fiscal targeting through direct transfers.
    4. Global Relevance: Countries like Finland, Kenya, and Iran have experimented with variants of basic income to address automation shocks and inequality.

    Why India Needs a New Welfare Model

    • Automation and Jobless Growth:
      1. India’s labour-intensive sectors are losing relevance as AI and robotics replace routine work.
      2. A 2023 McKinsey Report estimates 40-45% of Indian jobs risk automation by 2030.
      3. Consumption Inequality: The top 10% hold over 40% of total income, weakening demand from lower strata, a key factor behind India’s K-shaped recovery post-COVID.
    • Fragmented Welfare Spending:
      1. Over 950 central schemes exist; only 20% reach intended beneficiaries (NITI Aayog, 2022).
      2. Rationalizing and merging subsidies could free 1-2% of GDP, enough to fund a phased UBI.

    Fiscal Feasibility and Implementation Models

    1. Budgetary Realignment: A UBI costing ₹7,500 per person annually = ~1% of GDP, fiscally manageable by pruning inefficient subsidies.
    2. Digital Readiness: India’s JAM Trinity (Jan Dhan-Aadhaar-Mobile) enables transparent Direct Benefit Transfers (DBT) to 450+ million beneficiaries.
    3. Phased Approach:
      • Start with vulnerable groups (elderly, women, informal workers) and expand gradually.
      • Link with automation tax or digital economy levy to ensure sustainability.
    4. Behavioral Economics View: Unconditional transfers improve human capital investment (nutrition, education) without creating disincentive to work, proven in Madhya Pradesh SEWA UBI Pilot, 2013.

    UBI as an Economic Stabilizer

    1. Counter-Cyclical Tool: Maintains aggregate demand in economic slowdowns; ensures liquidity among lower-income households.
    2. Productivity Boost: Financial security allows workers to upskill and pursue entrepreneurial ventures instead of insecure subsistence jobs.
    3. Gender Dividend: Recognizes unpaid care work and enhances female labour participation, a major economic multiplier.
    4. Rural Resilience: Ensures income continuity against climate shocks, agrarian distress, and market failures.

    Challenges in Adopting UBI

    1. Fiscal Trade-offs: High recurring costs could strain the fiscal deficit if not balanced by rationalization of subsidies.
    2. Inflationary Pressure: Sudden increase in liquidity may spike prices unless accompanied by supply-side reforms.
    3. Exclusion Risks via Aadhaar/DBT: Digital divide and authentication errors can replicate old exclusion patterns.
    4. Political Economy Resistance: Targeted benefits create patronage networks; universalization dilutes control, making reform politically sensitive.

    Global Insights for India

    Country Nature of UBI Trial Lessons
    Finland (2017-18) €560/month for unemployed Improved well-being, not joblessness
    Kenya Cash transfer for 12 years Increased small business formation
    Iran (2010) Universal transfer replacing subsidies Reduced poverty without fiscal collapse
    Brazil (Bolsa Família) Conditional transfer, near-universal Boosted literacy, health, consumption

    India can blend these experiences into a hybrid model: quasi-universal, fiscally prudent, and tech-enabled.

    Conclusion

    A Universal Basic Income is no longer a moral luxury, it is an economic inevitability in a future where automation, inequality, and climate shocks converge. By realigning subsidies and leveraging digital infrastructure, India can embed economic dignity into fiscal policy. UBI is not about welfare dependency, it is about stabilizing markets through empowered citizens.

  • State of Food and Agriculture Report, 2025

    Why in the News?

    The State of Food and Agriculture (SOFA) Report 2025, released by the Food and Agriculture Organization (FAO) on 3 November 2025, highlights the alarming global impact of human-induced land degradation.

    About the SOFA Report:

    • Goal: Aims to help governments design sustainable land management and food security policies.
    • Publication: Released annually by the Food and Agriculture Organization (FAO) of the United Nations as one of its flagship analytical reports.
    • Focus (2025 Edition): Examines human-induced land degradation and its effects on agricultural productivity, poverty, and ecosystem stability.
    • Analytical Scope: Integrates soil data, land use patterns, crop yields, and socioeconomic indicators to identify global vulnerability hotspots.

    Key Global Findings (2025):

    • Population Exposure: Around 1.7 billion people live in land-degraded regions with declining agricultural output.
    • Deforestation Drivers: Agricultural expansion remains the cause of nearly 90% of global forest loss.
    • Land Use Trends (2001–2023): Global agricultural land shrank by 78 mha (–2%); cropland increased by 78 mha, while pastures declined by 151 mha.
    • Land Abandonment: About 3.6 mha of cropland is abandoned annually due to soil degradation.
    • Restoration Potential: Reversing 10% of degraded cropland could feed 154 million people yearly; restoring abandoned land could feed 476 million.
    • Vulnerability Hotspots: Sub-Saharan Africa and South Asia face the highest overlap of degradation, poverty, and child malnutrition.
    • Farm Structure Inequality: Small farms (<2 ha) constitute 85% of all farms but hold only 9% of farmland; large farms (>1,000 ha) control nearly 50% of it.
    • Degradation Masking: Large farms offset degradation through high input use, while smallholders face disproportionate yield losses.

    India-specific Insights:

    • Overview: India among countries with highest yield losses due to human-driven land degradation.
    • Regional Impact: Eastern and southern India worst affected owing to dense population and intensive cropping.
    • Major Causes: Include soil erosion, nutrient depletion, deforestation, and over-irrigation.
    • FAO Recommendations:
      • Scale up sustainable land management, soil health, and watershed programs.
      • Promote precision farming, agroforestry, and organic inputs for soil restoration.
      • Strengthen smallholder resilience through credit, technology, and market access.
      • Integrate land restoration with national missions like PM-KUSUM and PMKSY for long-term sustainability.
    [UPSC 2024] Consider the following statements:

    1. India is a member of the International Grains Council.

    2. The country needs to be a member of the International Grains Council for exporting or importing rice and wheat.

    Which of the statements given above is/are correct?

    Options: (a) 1 only* (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

     

  • Global Study on Biomass Movement

    Why in the News?

    A new study published in Nature Ecology & Evolution highlights how species mobility, measured as biomass movement, shapes ecosystems and reflects human ecological dominance.

    About the Concept of Biomass Movement:

    • Overview: Biomass movement is the product of a species’ total biomass and the distance it travels annually, representing the mass of living matter displaced across ecosystems each year.
      • Biomass movement = (Total biomass of a species) × (Distance it travels annually).
    • Purpose: Quantifies how living organisms contribute to nutrient transport, seed dispersal, and energy flow through movement.
    • Comparative Metric: Enables cross-species comparison of ecological influence via mobility, bridging animal ecology and global biogeography.
    • Analytical Value: Provides a standardised ecological indicator to study both natural migrations and human-induced mobility patterns.
    • Anthropocene Context: Serves as a unified measure of ecological and energetic impact in a human-dominated epoch.
    • Scientific Basis: Concept explored in Nature Ecology & Evolution (2025) to assess species-level and anthropogenic movement on a global scale.

    Key Highlights with Example:

    • Arctic Tern: Weighing ~100 g, travels ~90,000 km annually (Arctic–Antarctica circuit), the longest animal migration known.
    • Collective Biomass Movement: Two million terns contribute only 0.016 gt/km/yr, due to low body mass despite vast distances.
    • Grey Wolf: Records 0.03 gt/km/yr, higher due to larger body size and wider terrestrial range.
    • Serengeti Migration: Over a million wildebeests, gazelles, and zebras generate biomass movement 20× greater than wolves.
    • Human Parallel: The total biomass moved in the FIFA World Cup equals that of major animal migrations, highlighting scale disparity between species.

    Human Biomass Movement and Its Consequences:

    • Magnitude: Humans move an estimated ~4,000 gt/km/yr, the largest on Earth, 40× greater than all wild land mammals combined.
    • Mobility Patterns: Average human travels 30 km/day, mostly motorised, 65% by cars/motorcycles, 10% by air, 5% by rail.
    • Economic Disparity: Two-thirds of total human mobility occurs in high- and upper-middle-income countries, reflecting global inequality.
    • Ecological Effects: Drives carbon emissions, urban sprawl, resource depletion, and land fragmentation.
    • Marine Decline: Marine animal mobility has halved since 1850 due to industrial fishing and whaling.
    • Livestock Factor: Domesticated cattle show biomass movement comparable to humans, indicating the ecological weight of livestock farming.
    • Wildlife Contrast: Combined biomass movement of all wild land mammals (excluding bats) is only 30 gt/km/yr, underscoring human dominance.
    • Anthropocene Insight: Demonstrates that human and domesticated animal mobility now defines Earth’s biogeochemical and ecological motion.
  • [pib] Indian Navy commissions INS Ikshak

    Why in the News?

    The Indian Navy has commissioned INS Ikshak, the third Survey Vessel (Large) (SVL) and the first to be based at the Southern Naval Command, at Naval Base Kochi.

    About INS Ikshak:

    • Overview: It is the third vessel of the Survey Vessel (Large) [SVL] class and the first to be based at the Southern Naval Command.
    • Series Lineage: Third ship in the SVL series, following INS Sandhayak and INS Nirdeshak, replacing older Sandhayak-class vessels.
    • Builder & Origin: Constructed by Garden Reach Shipbuilders & Engineers (GRSE) Ltd., Kolkata, under Aatmanirbhar Bharat, with over 80% indigenous content sourced from Indian MSMEs.
    • Name Meaning: Means ‘Guide’ in Sanskrit – symbolising its role in charting unexplored waters and strengthening maritime safety in the Indian Ocean Region (IOR).
    • Mission Role: Designed primarily for hydrographic surveys but also configured for Humanitarian Assistance and Disaster Relief (HADR) operations and can serve as a hospital ship during crises.

    Key Features:

    • Dimensions & Displacement: 110 m long, 16 m wide, 3,400-ton displacement, with crew capacity of ~231 personnel.
    • Propulsion & Speed: Powered by twin main engines and twin-shaft configuration; achieves 14 knots cruising speed, 18 knots maximum.
    • Survey Systems: Equipped with multi-beam echo sounder, Autonomous Underwater Vehicle (AUV), Remotely Operated Vehicle (ROV), four Survey Motor Boats (SMBs), and advanced oceanographic sensors for coastal and deep-water mapping.
    • Aviation Facility: Features a helicopter deck, extending its range, reconnaissance, and operational versatility.
    • Dual Role Capability: Convertible for HADR and medical missions, enhancing naval disaster-response capability.
    • Gender-Inclusive Design: India’s first survey vessel with dedicated accommodation for women officers and sailors.
    [UPSC 2016] Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently?
    Options: (a) Amphibious warfare ship
    (b) Nuclear-powered submarine
    (c) Torpedo launch and recovery vessel *
    (d) Nuclear-powered aircraft carrier

     

  • Clearest Black Hole Merger signal allows probe of Hawking’s Law

    Why in the News?

    Researchers have detected the clearest gravitational wave signal, GW250114, from merging black holes, confirming Stephen Hawking’s 1971 Black Hole Area Theorem.

    Clearest Black Hole Merger signal allows probe of Hawking’s Law

    About GW250114:

    • Overview: GW250114 is the clearest gravitational wave signal ever detected, observed on January 14, 2025, by LIGO (US), Virgo (Italy), and KAGRA (Japan).
    • What Happened: It came from the collision of two black holes, each about 30 times the Sun’s mass, located 1.3 billion light-years away.
    • Importance: Published in Physical Review Letters (Sept 2025), it gave the strongest proof of Stephen Hawking’s Black Hole Area Theorem (1971) and confirmed Einstein’s General Theory of Relativity.

    Back2Bascis: Black Holes

    • Overview: A black hole is a region in space where gravity is so strong that even light cannot escape.
    • Formation: Created when a massive star collapses after using up its fuel.
    • Types:
    1. Stellar Black Holes – formed from dead stars.
    2. Supermassive Black Holes – at the centre of galaxies.
    3. Intermediate or Primordial – smaller or early-universe types.
    • Properties: Defined by mass, spin, and charge; grow by absorbing matter or merging with other black holes.

    What is a Black Hole Merger?

    • Process: Two black holes orbit each other, come closer, and finally collide to form a bigger black hole.
    • Phases:
    1. Inspiral – they lose energy and move inward.
    2. Merger – they collide, sending out gravitational waves.
    3. Ringdown – the new black hole settles down.
    • Observation: These mergers create powerful ripples in spacetime called gravitational waves, first detected by LIGO in 2015.

    What is the Hawking’s Black Hole Area Theorem (1971)?

    • Idea: The total surface area of black holes never decreases — it can only stay the same or increase.
    • Analogy: Similar to the Second Law of Thermodynamics, where disorder (entropy) always increases.
    • Meaning: When two black holes merge, the new black hole’s surface area is greater than or equal to the combined areas of the originals.
    • Proof: The GW250114 event (2025) confirmed this by showing that the total area increased, just as Hawking predicted.
    [UPSC 2019] Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth. What is the significance of this observation?

    Options: (a) Higgs boson particles’ were detected.

    (b) Gravitational waves’ were detected. *

    (c) Possibility of inter-galactic space travel through ‘wormhole’ was confirmed.

    (d) It enabled the scientists to understand ‘singularity’.

     

  • Govt panel working on New SEZ Norms for Exporters to Access Domestic Market

    Why in the News?

    A government panel comprising officials from the Commerce and Industry Ministry, NITI Aayog, and exporters is drafting new Special Economic Zone (SEZ) norms to revive manufacturing and support exporters hit by steep U.S. tariffs in 2025.

    Back2Basics: Special Economic Zones (SEZs) in India

    • Overview: Duty-free enclaves treated as foreign territory for trade, designed to boost exports, investment, and employment.
    • Legal Framework: Governed by the SEZ Act, 2005 and SEZ Rules, 2006 with single-window clearances and liberal FDI norms.
    • Policy Evolution: Introduced in 2000, replacing Export Processing Zones (EPZs) to strengthen export-led industrialization.
    • Objectives: Promote export growth, foreign and domestic investment, and infrastructure creation.
    • Incentives: Include duty-free imports, tax holidays, zero-rated GST, and ECB up to $500 million annually.
    • Scale: As of 2025, India has 276 operational SEZs– notably GIFT City (Gujarat), SEEPZ (Mumbai), and Noida SEZ.
    • Reform Outlook: The Development of Enterprise and Service Hubs (DESH) Bill 2022 aims to evolve SEZs into flexible, multi-use economic hubs linking domestic and global value chains.

    Need for SEZ Norms Revision:

    • U.S. Tariff Impact: Recent U.S. tariff hikes on gems, jewellery, and textiles have reduced price competitiveness of India’s SEZ-based exporters, leading to production losses.
    • Export Decline: SEZ exports dropped to $172 billion (FY25), with domestic sales stagnating at 2%, exposing overdependence on foreign markets.
    • Idle Capacity & Job Losses: Fluctuating export demand left labour and machinery underutilised; reforms aim to let SEZs meet domestic orders during downturns.
    • Global Benchmarking: Indian SEZs lag China and Vietnam in scale, policy stability, and productivity, prompting structural reform for competitiveness.
    • Revenue Balance: The government seeks industry relief while safeguarding tax revenues, given SEZs’ extensive tax exemptions.

    Proposed SEZ Reforms under Review:

    • Reverse Job Work Permission: SEZs may be allowed to accept domestic processing contracts to use idle capacity during off-peak seasons.
    • DTA Sales Flexibility: Partial permission for direct domestic sales, with duty adjustments to protect local manufacturers.
    • Simplified De-notification Rules: Faster conversion of non-performing SEZs into industrial parks or enterprise hubs.
    • Sectoral Support: Gems and jewellery exporters seek moratoriums, longer export obligations, and interest relief.
    • Integration with DESH Bill (2022): Adoption of hybrid zone model for both exports and domestic production under the Development of Enterprise and Service Hubs framework.
    [UPSC 2010] The SEZ Act, 2005 which came into effect in February 2006 has certain objectives. In this context, consider the following:
    1. Development of infrastructure facilities. 2. Promotion of investment from foreign sources. 3. Promotion of exports of services only.
    Which of the above are the objectives of this Act?
    Options: (a) 1 and 2 only* (b) 3 only (c) 2 and 3 only (d) 1,2 and 3

    [UPSC 2016] Recently, India’s first ‘National Investment and Manufacturing Zone’ was proposed to be set up in-
    Options: (a) Andhra Pradesh* (b) Gujarat (c) Maharashtra (d) Uttar Pradesh