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GS Paper: GS3

  • What is the potential of Biochar?

    As India gears up to launch its carbon market in 2026, biochar, a carbon-rich material made from agricultural and organic waste, is gaining attention as a sustainable solution for carbon capture and waste management. Despite its immense potential, biochar remains underutilised due to lack of policy support, market structures and awareness.

    What is the potential of biochar?

    What is Biochar and Why is it Important?

    • Biochar is a type of charcoal/black carbon produced by heating organic waste (like crop residue or solid municipal waste) in a low-oxygen environment.
    • It locks carbon into the soil for hundreds of years, reducing greenhouse gases and improving soil quality.
    • It is an effective long-term carbon sink.

    Biochar Potential in India:

    • India generates over 600 million tonnes of agricultural waste and 60 million tonnes of municipal waste each year, much of which is burned or dumped, contributing to pollution.
    • By converting just 30–50% of this waste into biochar, India could:
      • Produce 15–26 million tonnes of biochar
      • Remove 0.1 gigatonnes of Carbon Dioxide (CO₂) equivalent emissions annually
    • Biochar production also provides with the following:
      • Syngas (20–30 million tonnes) which can generate 8–13 TWh of electricity, replacing about 0.5–0.7 million tonnes of coal
      • Bio-oil (24–40 million tonnes) which can offset 12–19 million tonnes of diesel/kerosene, reducing oil imports and fossil fuel emissions by more than 2%

    Applications of Biochar in Key Sectors:

    1. Agriculture: It improves soil health and water retention, especially in semi-arid and nutrient-poor regions. It can reduce nitrous oxide emissions by 30–50%, which is vital as this gas has 273x more warming potential than CO₂. Its application leads to higher crop yields (10–25%) and reduced fertilizer needs (by 10–20%). Biochar can also enhance soil organic carbon, helping restore degraded soils.
    2. Construction: Adding just 2–5% biochar in concrete improves strength and heat resistance. It helps capture 115 kg of CO₂ per cubic metre of concrete, turning buildings into carbon sinks.
    3. Wastewater Treatment: One kg of biochar can help treat 200–500 litres of wastewater. India’s untreated wastewater (~72%) could use 2.5–6.3 million tonnes of biochar annually.
    4. Carbon Capture: Biochar can be modified to absorb CO₂ from industrial exhausts, though current efficiency is lower than traditional methods.
    5. Circular Economy: Biochar aligns with the circular economy model, waste to wealth.

    Why is Biochar Still Not Widely Adopted?

    1. It remains underrepresented in carbon credit systems due to the absence of standardised feedstock markets and consistent carbon accounting methods, which undermine investor confidence.
    2. Limited policy support, low public awareness, and no coordinated action across sectors.
    3. No strong carbon credit mechanism to reward users and producers.

    Steps that can be undertaken for Large-Scale Adoption of Biochar:

    1. R&D Support: Develop region-specific feedstock guidelines and technologies.
    2. Policy Integration: Link biochar with Crop residue management schemes, Bioenergy programs and State Action Plans on Climate Change
    3. Carbon Market Recognition: Allow biochar to earn carbon credits, giving financial incentives to farmers and investors.
    4. Village-Level Deployment: Establish small-scale biochar units that can create over 5 lakh rural jobs.
    5. Linkage with National Missions: Can be linked with Mission LiFE and the Swachh Bharat Abhiyan.

    Biochar offers a powerful tool for India’s climate smart and sustainable agriculture by enhancing soil health, improving water and nutrient retention, and bolstering climate resilience. Its integration can reduce dependency on synthetic inputs, aligning with organic farming principles. Crucially, biochar provides a significant mechanism for carbon sequestration and mitigating greenhouse gas emissions from agriculture, contributing to India’s climate goals. Leveraging this “black gold” through targeted policy support and research is essential for a greener, more resilient future.

    Practice UPSC Mains Question

    1. Biochar is emerging as a multipurpose tool for sustainable development in India. Discuss its potential across sectors and the challenges in its adoption.
    2. What are the salient features of ‘Waste-to-Energy’ policy of India? Describe the role of waste to energy technologies in achieving energy security in India.

  • Microplastic and marine debris levels

    Microplastic Pollution:

    Microplastics are now a serious environmental and health threat. A recent (Ministry of Earth Sciences) MoES–NCCR survey found alarming levels along India’s east and west coasts, highlighting the urgent need to embed microplastic control within India’s environmental governance framework.

    Key Findings from NCCR Survey (2022–2025):

    1. Major microplastic sources identified:
      1. Riverine inputs (plastic waste transported by rivers)
      2. Abandoned, Lost, and Discarded Fishing Gear (ALDFG), a persistent marine debris source globally
    2. The presence of primary (e.g., microbeads in cosmetics) and secondary microplastics (from the breakdown of plastic waste) was confirmed.

    Microplastics: Nature

    • Definition: Plastic particles ranging between 1 micrometre (µm) and 5 millimetres (mm).
    • Types:
      • Primary Microplastics: Manufactured in small sizes (e.g., microbeads in personal care products).
      • Secondary Microplastics: Result from degradation of larger plastic items due to sunlight, wave action and other environmental factors.

    Environmental Impact of Microplastics:

    Impact on Marine Environments:

    1. Ingestion by Marine Life: Marine organisms, including fish, seabirds, ingest microplastics and can cause physical harm including gut blockages and tissue damage.
    2. Bioaccumulation in Marine Food Webs: Bioaccumulation can lead to higher concentrations of toxins such as Polychlorinated Biphenyls (PCBs) and Polycyclic Aromatic Hydrocarbons (PAHs) in top predators, potentially impacting their health and reproductive success.
    3. Habitat Disruption: Microplastics can accumulate in marine sediments and affect the structure and function of marine ecosystems.
    4. Chemical Leaching: Microplastics can leach harmful chemicals into the surrounding seawater. These chemicals include Bisphenol A (BPA), which is known to cause reproductive defects in some fish species, along with phthalates and brominated flame retardants, all of which can interfere with the endocrine system.

    Impact on Ecological Systems:

    1. Soil Contamination: Microplastics can negatively impact soil structure, microbial activity, and nutrient cycling, affecting plant growth and overall ecosystem health. They can act as carriers for toxins like heavy metals (e.g., Lead (Pb) and Cadmium (Cd)).
    2. Disruption of Food Webs: Microplastics can accumulate in the bodies of various organisms, potentially disrupting food chains and affecting higher trophic levels.
    3. Impact on Soil Biota: Exposure to microplastics can negatively impact soil-dwelling organisms like earthworms and microorganisms, affecting their growth and reproduction. Leaching of plastic additives such as phthalates can disrupt cell membrane function in microbes.
    4. Plant Toxicity: Microplastics can be absorbed by plants, potentially affecting their growth and development, and introducing toxins into the food chain.

    India’s Initiatives on Microplastic Management

    1. Plastic Waste Management Rules, 2016 (Amended 2021–22): Ban on single-use plastics and Emphasis on Extended Producer Responsibility (EPR) for collection and recycling.
    2. Swachh Bharat Mission 2.0: Includes solid waste segregation, treatment, and scientific disposal.
    3. Ecosensitive Coastal Zone Regulation (CRZ): CRZ rules govern development along coastlines and indirectly reduce marine plastic input.
    4. FSSAI Project: Ongoing study to develop standard detection protocols for microplastics in food products.

    International Conventions and Agreements

    • MARPOL (International Convention for the Prevention of Pollution from Ships) Annex V prohibits the discharge of plastics and synthetic fishing gear into the sea.
    • Basel Convention (1989, amended in 2019) regulates transboundary movement of plastic waste. India ratified the amendments concerning plastic waste in 2020.
    • The United Nations Environment Assembly (UNEA) adopted a historic resolution to negotiate a legally binding global treaty on plastic pollution by 2024 (still ongoing).
    • Sustainable Development Goal 14 talks about Preventing and significantly reducing marine pollution of all kinds, particularly from land-based activities.
    • Global Partnership on Marine Litter (GPML): A UN Environment initiative, India is a participating country.

    Way Forward

    1. National Microplastic Monitoring Programme: Expand surveys to include rivers, lakes, groundwater, and terrestrial ecosystems.
    2. Ban on Microbeads: A clear legislative ban on the use of microbeads in personal care products (done in countries like the UK and USA).
    3. Fishing Gear Recovery Programmes: Introduce buy-back schemes or incentives for collection of damaged fishing gear.
    4. Invest in R&D: Support startups and research institutes working on biodegradable alternatives and plastic detection methods.
    5. Public Awareness and Behavioural Change: Use platforms like Eco Clubs, MyGov, Swachh Bharat campaigns for mass education.

    The presence of microplastics disrupts ecosystems by affecting organisms’ behavior and physiology, impacting soil fertility, and altering aquatic food webs. Addressing microplastic pollution requires a multi-faceted approach, including reducing plastic consumption, improving waste management, and developing innovative solutions like biodegradable alternatives and advanced filtration systems.

    Practice UPSC Mains Questions:

    1. What are microplastics and how do they impact human health and the environment? Evaluate India’s current policy response to the problem and suggest a comprehensive mitigation strategy.
    2. Critically discuss the effectiveness of current national and global efforts to combat microplastic pollution, including initiatives like the Single-Use Plastic ban and the ongoing discussions around a legally binding international plastics treaty.

  • In News: Great Barrier Reef

    Why in the News?

    The Great Barrier Reef is facing its sharpest coral decline in 40 years, with the 2024 mass bleaching—driven by climate change, cyclones, and coral predators—severely damaging large reef areas.

    In News: Great Barrier Reef

    About Great Barrier Reef:

    • Location: Coral Sea, off the northeast coast of Queensland, Australia.
    • Length & Area: Extends ~2,300 km; comprises ~3,000 reefs and 900 islands, covering ~350,000 square kilometers (about 10% of global coral reef ecosystems).
    • Biodiversity:
      • Hosts 400 coral species, 1,500 fish species, and 4,000 mollusk species.
      • Habitat for endangered species like the dugong and green turtle.
    • Reef Types: Includes platform reefs, wall reefs, and fringing reefs.
    • Protection Status:
      • Managed by the Great Barrier Reef Marine Park Authority.
      • Declared a United Nations Educational, Scientific and Cultural Organization (UNESCO) World Heritage Site in 1981.
    • Mass Bleaching Years: Notable events occurred in 1998, 2002, 2016, 2017, 2020, 2022, 2024, and 2025.

    Coral Decline and Bleaching Events:

    • Main Cause: Heat stress due to climate change, particularly during marine heatwaves.
    • 2024 Event: Fifth major bleaching since 2016; had the widest spatial impact recorded in the Australian Institute of Marine Science’s 39-year monitoring program.
    • Additional Damage: Cyclones (e.g., Cyclone Jasper) and flood plumes caused physical damage and freshwater stress.
    • Biological Threats: Crown-of-thorns starfish (COTS) outbreaks intensified coral predation, especially in the Swains sector.
    • 2025 Survey Findings:
      • 48% of 124 surveyed reefs showed coral decline.
      • Only 10% recorded an increase in coral cover.
    • Regional Impact: Southern Great Barrier Reef saw a 30.6% drop in hard coral cover—the sharpest annual decline ever recorded in that zone.
    [UPSC 2014] The scientific view is that the increase in global temperature should not exceed 2 0 C above pre-industrial level. If the global temperature increases beyond 30 C above the pre-industrial level, what can be its possible impact/impacts on the world?

    1. Terrestrial biosphere tends toward a net carbon source. 2. Widespread coral mortality will occur. 3. All the global wetlands will permanently disappear.  4. Cultivation of cereals will not be possible anywhere in the world. Select the correct answer using the code given below:

    Options: (a) 1 only (b) 1 and 2 only* (c) 2, 3 and 4 only (d) 1, 2, 3 and 4 only

     

  • Bacterial cause behind Mass Starfish Deaths

    Why in the News?

    Since 2013, over 5 billion starfish have died along North America’s Pacific coast due to a wasting disease now linked to Vibrio pectenicida, a cholera-related bacterium.

    Bacterial cause behind Mass Starfish Deaths

    About Starfish (Sea Stars):

    • Taxonomy: Belong to phylum Echinodermata; exclusively marine organisms.
    • Species: Brisingida, Forcipulatida, Velatida, Valvatida, Spinuloside
    • Body Structure:
      • Radial symmetry (adults), bilateral symmetry (larvae)
      • Calcareous exoskeleton for protection
      • Water vascular system for respiration and circulation
    • Unique Features:
      • Regeneration: Can regrow lost limbs
      • No blood or brain: Seawater circulates nutrients
      • Eyespots: At arm tips, help sense light
      • Tough skin: Made of calcium carbonate
    • Feeding: Carnivorous, detritivorous, and scavengers

    Reasons for Mass Deaths (2013–2025):

    • Causal Agent: Identified in 2025 as Vibrio pectenicida, a bacterium related to cholera-causing strains.
    • Symptoms: Limb detachment; Tissue disintegration; Melting into a pile of gunk.
    • Most Affected Species: Sunflower sea stars, which saw a 90% population decline.
    • Geographical Spread: Along the Pacific coast from Alaska to Mexico.
    • Ecological Consequences:
      • Starfish are keystone predators, especially of sea urchins.
      • Their decline led to urchin population explosions, which overgrazed kelp forests.
      • Resulted in biodiversity loss and reduced carbon sequestration.
    [UPSC 2012] Vultures which used to be very common in Indian countryside some years ago are rarely seen nowadays. This is attributed to:

    (a) the destruction of their nesting sites by new invasive species disease among them (b) a drug used by cattle owners for treating their diseased cattle persistent and fatal (c) scarcity of food available to them (d) a widespread, persistent and fatal disease among them

     

  • Parliament passes Carriage of Goods by Sea Bill, 2025

    Why in the News?

    Parliament has passed the Carriage of Goods by Sea Bill, 2025, replacing the nearly century-old Indian Carriage of Goods by Sea Act, 1925.

    About Carriage of Goods by Sea Bill, 2025:

    • Replaces: The colonial-era Indian Carriage of Goods by Sea Act, 1925.
    • Purpose: Regulates the rights, duties, liabilities, and immunities of parties involved in shipping goods by sea from Indian ports to domestic or international destinations.
    • International Alignment: Retains consistency with the Hague Rules (1924), which also formed the basis of the 1925 Act.
    • Objective: Modernises maritime law in line with global standards and boosts India’s ease of doing business in the maritime sector.

    Key Features:

    • Bills of Lading Defined: It outlines the details of the shipment, including the type and quantity of goods, the origin and destination, and the terms of the agreement between the shipper and the carrier.
      • Includes details on goods’ type, quantity, condition, and destination.
      • Serves as a legally binding contract between the shipper and carrier.
    • Central Government Powers:
      • May issue directions for implementation.
      • Can amend the Schedule of Rules related to bills of lading.
    • Part of Broader Maritime Reforms:
      • Supports port development and coastal trade.
      • Encourages creation of State Maritime Boards and a Maritime State Development Council.
      • Covers port safety, disaster response, pollution control, and dispute resolution.
    • Global Compliance: Aligns India’s shipping laws with evolving international conventions and practices.
    [UPSC 2016] The term ‘import cover’, sometimes seen in the news, refers to

    (a) It is the ratio of value of imports to the Gross Domestic Product of a country

    (b) It is the total value of imports of a country in a year

    (c) It is the ratio between the value of exports and that of imports between two countries

    (d) It is the number of months of imports that could be paid for by a country’s international reserves*

     

  • India needs a ‘defence cess’ to fund military modernisation

    With such a levy on high-end goods, spending on luxury will become a visible public act of support for the armed forces. In an era of evolving warfare, from stealth jets to AI-driven drones, India’s defence preparedness is no longer optional, it is existential. This article proposes a ‘Defence Cess’ on luxury goods and services, offering a creative, emotionally resonant, and fiscally sustainable mechanism to ring-fence funds for military modernisation. This issue links directly to GS Paper II (Governance), GS Paper III (Security and Economy), and GS IV (Ethics, especially public accountability and duty).

    The Strategic Urgency: Why Modernisation Can’t Wait

    India is increasingly surrounded by hostile neighbours with fast-upgrading military capacities:

    1. Pakistan may soon induct stealth fighters like J-20 or J-35 from China.
    2. China is testing sixth-generation aircraft and has strong cyber and drone warfare capabilities.
    3. The Indian Air Force (IAF), by contrast, operates only 32 squadrons vs the sanctioned strength of 42 — leaving India strategically exposed in contested airspace.

    Key Quote: “Capability alone is not enough. The country cannot afford to be vulnerable.”

    Modernisation is Existential, Not Aspirational

    India’s military modernisation roadmap is ambitious but underfunded. It includes:

    1. Fifth-generation fighter aircraft development (AMCA)
    2. Indigenous jet engine programmes
    3. Strategic unmanned aerial vehicles (UAVs)
    4. Electronic warfare (EW) and cyber-capacity enhancement

    But while intent exists, execution suffers from fragmented schemes, budgetary limitations, and lack of dedicated long-term funding.

    The Defence Cess Proposal: Key Features

    1. A 5–10% surcharge on ultra-luxury goods and services like High-end cars, Private jets, Imported luxury watches, Premium liquor, etc.
    2. Clearly itemised on invoices as “Raksha Cess”
    3. Funds are non-lapsable, targeted, and traceable
    4. Exclusively for capital expenditure in Procurement, R&D, Infrastructure for defence

    Global Parallels and Precedents

    Defence/Strategic Taxation Model
    Italy Luxury tax on yachts and helicopters during Eurozone crisis
    Sweden Long-standing luxury taxation for social balance
    China Anti-extravagance drive redirected elite consumption toward strategic sectors

    These countries have used fiscal mechanisms not just to fund strategy but to shape public narratives, blending consumption with national responsibility.

    Why a Defence Cess Works for India

    1. Psychological and Symbolic Impact: The idea of contributing directly to the betterment of Indian defence through luxury spending has strong emotional appeal. It creates a moral linkage between indulgence and national duty converting private consumption into public solidarity. Naming it “Raksha Cess” makes it resonate with patriotism and responsibility.
    2. Fiscal Innovation Without Burdening the Masses: India’s direct tax base is relatively narrow, and increasing defence funding through general taxation could hurt the middle class or poor. This cess targets only high-end consumers, ensuring that additional fiscal pressure is placed on those most capable of bearing it. Luxury spending has grown significantly with India’s rising affluent class, this captures a booming sector for national good.
    3. Transparency and Traceability: Since the cess is itemised separately on invoices, it allows greater transparency. It increases trust in government utilisation and may lead to greater tax compliance if people know exactly where their money goes. With digitised billing and GST-era infrastructure, monitoring and reporting mechanisms already exist to track such surcharges.
    4. Dedicated, Ring-Fenced Defence Fund: Current defence allocations are diluted across revenue expenses and pensions. It helps bypass routine bureaucratic delays and ensures directed capital spending. A defence cess would be non-lapsable and strictly for capital expenditure — such as: Acquiring new aircraft, R&D in defence tech and Indigenous manufacturing. This enables long-term strategic planning free from annual budget cycles.
    5. Aligns India With Global Practices: Many countries (Italy, Sweden, China) have used luxury taxation or targeted levies to support strategic sectors or correct fiscal imbalances. India can draw from these models to introduce a fiscally sound and globally validated mechanism.
    6. Boosts the Narrative of Nation-Building: In an era where narratives matter, this proposal encourages voluntary nation-building and elite participation in national security. It sends a message that “those who benefit most from India’s rise should contribute most to its protection.”

    Challenges in Implementing a Defence Cess:

    1. Legal and Fiscal Complexity: Introducing a cess outside the GST framework may face legal and administrative hurdles, requiring amendments or coordination with the GST Council. There may be opposition from States citing federal fiscal concerns
    2. Risk of Misuse or Leakage: Any fund not managed with full transparency and oversight can fall prey to inefficiency or corruption. Strong audit systems and public reporting mechanisms must be built into the cess architecture from the outset.
    3. Need for a Clear Governance Structure: A dedicated body or fund management unit should be created under the Ministry of Defence or PMO, preferably with civil society representation for accountability. Without such a structure, funds may be diverted or underutilised.
    4. Revenue Predictability and Scale: Luxury consumption is inelastic but cyclical, it may dip during economic downturns. The fund should not be over-relied upon for core defence needs; rather, it must act as a complementary booster.
    5. Perception Management and Political Pushback: Some may view this as a populist or performative move, or even as a “sin tax on success”. There must be consistent and transparent communication that this is about contribution, not punishment.
    6. Moral Optics and Class Tensions: Care must be taken to avoid triggering class resentment or elite backlash, especially if the tax seems punitive. Framing it as “a privilege with purpose” is crucial — the messaging has to be inclusive, not divisive.

    Conclusion: From Passive Consumers to Active Nation-Builders

    India’s national security demands not just better weapons, but a sustainable model of public contribution and political imagination. A well-designed defence cess could convert elite indulgence into national insurance, creating a visible alignment between privilege and responsibility.

    Value Addition

    India’s Defence Modernisation: 

    What Has Been Done: What is being planned
    • Tejas Mk-1A production initiated (HAL)
    • Strategic partnerships under DPP-2020 for indigenous manufacturing
    • Agni Prime, INS Vikrant, and SAM systems development
    • Defence exports crossed ₹21,000 crore in 2023-24
    • Emergency procurement powers given to armed forces post-Galwan
    • AMCA (Advanced Medium Combat Aircraft) — 5th Gen fighter
    • Twin-engine deck-based fighter (TEDBF) for Navy
    • India-US Jet Engine Deal (GE-HAL) under iCET
    • India-France agreement for submarine co-development
    • Cyber and AI warfare units under Theatre Command model

    Important Agreements and Collaborations:

    Country Collaboration
    USA iCET, Jet Engine tech transfer (GE -F414)
    France Rafale aircraft, scorpene submarine
    Israel Missile defence (Barak-8)
    Russia S-400 Missile systems, AK-203 Rifles

    Important Defence Policies:

    1. Defence Acquisition Procedure (DAP) 2020: Goal: To streamline the procurement process for the Indian Armed Forces, promoting indigenization and efficiency. Prioritizes “Buy Indian” categories, Enhanced Indigenous Content (IC), Simplification of Trial and Testing Procedures and has Emphasis on Make and Innovation.
    2. Innovations for Defence Excellence (iDEX): Goal: To foster an ecosystem for innovation and technology development in the defence and aerospace sectors, leveraging the potential of startups, MSMEs, academia, and individual innovators. It is managed by Defence Innovation Organization (DIO), a not-for-profit company founded by Hindustan Aeronautics Limited (HAL) & Bharat Electronics Limited (BEL).
    3. DRDO’s 5-Year Roadmap (Vision 2025): Goal: To lead India towards self-reliance in defence technologies and become a global leader in defence research and development.

     

  • Status of Ethanol Blended Petrol (EBP) Programme

    Why in the News?

    India met its 20% ethanol blending (E20) target in petrol by March 2025 — five years early. Talks are now on to raise the blending ratio further in the immediate future.

    About Ethanol Blended Petrol (EBP) Programme:

    • Launched in 2003 by the Ministry of Petroleum and Natural Gas.
    • Objective: Promote use of renewable, domestically produced ethanol in petrol.
    • Nationwide rollout (except A&N and Lakshadweep) since April 2019.
    • Feedstock:
      • 1G Ethanol: From sugarcane molasses, maize, rice.
      • 2G Ethanol: From agricultural residues like rice straw, bamboo, bagasse.
    • Blending Progress:
      • 1.6% in 2013–14
      • 11.8% in 2022–23
      • 20% achieved in March 2025 (E20)
    • Future Plans:
      • Discussions on E27 blending target by 2030.
      • Government exploring flex-fuel vehicles (e.g., E85-capable (dual-fuel) cars).

    India’s Achievements:

    • Environmental Gains: 19.2 million tonnes of CO₂ emissions avoided (2014–2021).
    • Economic Impact: ₹26,000 crore saved in foreign exchange via reduced oil imports.
    • Industrial Growth:
      • Distillery capacity scaled up with interest subvention support.
      • Flex-fuel vehicles showcased by major automakers in 2025.
    • Farmer Benefit: Creates demand for sugarcane and grains, increasing farm income.

    Limitations:

    • Technical Challenges
      • Lower mileage with E20 due to reduced energy content.
      • Older vehicles may face engine compatibility issues.
      • Flex-fuel technology adoption still limited.
    • Economic Concerns
      • No drop in fuel prices despite ethanol savings.
      • Consumer hesitation due to lack of visible benefits.
    • Environmental Trade-offs
      • High land and water use for ethanol crops (especially sugarcane).
      • Food security risks from diverting food crops for fuel.
    • Need for Diversification
      • Majority of ethanol still from sugarcane; limited 2G ethanol usage.
      • Need to promote biomass-based ethanol (wood chips, crop residue).
    [UPSC 2025] Consider the following statements:

    Statement I: Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former produces more ethanol than the latter.

    Statement II: Unlike in the United States of America where corn is the principal feedstock for ethanol production, sugarcane is the principal feedstock for ethanol production in Brazil.

    Which one of the following is correct in respect of the above statements?

    (a) Both Statement I and Statement II are correct and Statement II explains Statement I

    (b) Both Statement I and Statement II are correct but Statement II does not explain Statement I

    (c) Statement I is correct but Statement II is not correct

    (d) Statement I is not correct but Statement II is correct *

     

  • Rhisotope Project

    Why in the News?

    In a move to combat rhino poaching, the University of the Witwatersrand in South Africa, supported by the International Atomic Energy Agency (IAEA), has launched the Rhisotope Project.

    What is Rhisotope Project? 

    • Launched By: University of the Witwatersrand, South Africa, with support from the International Atomic Energy Agency (IAEA).
    • Initiation: Concept began in 2021; formally launched in July 2024.
    • Objective: Prevent rhino poaching by making horns traceable and unsuitable for illegal trade.
    • Pilot Site: Waterberg Biosphere Reserve, South Africa.
    • Pilot Implementation: 20 rhinos injected with radioisotopes (exact isotope remains undisclosed) for testing.

    How the Isotope Tagging Works?

    • Isotope Basics: Uses radioactive isotopes that emit detectable radiation as they decay.
    • Injection Method: A small hole is drilled into the horn; a low dose of isotope is inserted safely.
    • Detection Mechanism: Radiation Portal Monitors at ports can detect tagged horns—even inside 40-foot containers, as proven using 3D-printed horn simulations.

     

    Significance:

    • Safety Assurance: No damage to rhinos observed; cytological tests showed no cellular or physiological harm.
    • Impact on Illegal Trade: Horn becomes detectable, unusable, and toxic for illegal human consumption.
    [UPSC 2019] Consider the following statements:

    1. Asiatic lion is naturally found In India only.     2. Double-humped camel is naturally found in India only.     3. One-horned rhinoceros is naturally found in India only.

    Which of the statements given above is / are correct?”

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

     

  • Population Census of Nilgiri Tahrs  

    Why in the News?

    A joint population census conducted by Kerala and Tamil Nadu has revealed the presence of 2,668 Nilgiri tahrs in the Western Ghats.

    Population Census of Nilgiri Tahrs  

    About Nilgiri Tahr (Nilgiritragus hylocrius):

    • Endemism: Found only in the Nilgiri Hills and southern Western Ghats of Tamil Nadu and Kerala, India.
    • Ecological Role: Key grazer in the montane grassland ecosystem, influencing plant growth and grassland regeneration.
    • Habitat:
      • Open montane grasslands interspersed with shola forests (South Western Ghats montane rain forests eco-region).
      • Occurs at elevations between 1,200 to 2,600 metres (3,900 to 8,500 feet).
      • Prefers steep rocky slopes, cliff edges, and grassy plateaus — areas with clear visibility to detect predators.
    • Population: Estimated 3,122 individuals in the wild; Locally extinct in about 14% of its historical habitat.
      • In Kerala (1,365): Eravikulam National Park (ENP) – largest single population (~841 individuals); Anamalai Hills landscape.
      • In Tamil Nadu (1303): Mukurthi National Park; Grass Hills National Park; Kalakkad-Mundanthurai Tiger Reserve (lesser presence)
    • Conservation Status:
      • IUCN Red List: Endangered
      • Wildlife (Protection) Act, 1972: Schedule I
    • Cultural Significance:
      • Official state animal of Tamil Nadu.
      • Mentioned in Tamil Sangam literature (~2,000 years ago).
      • Seen in Mesolithic rock art (10,000–4,000 BC), indicating its deep historical importance.
    [UPSC 2018] Consider the following fauna of India:

    1. Gharial 2. Leatherback turtle 3. Swamp deer

    Which of the above is/are endangered?

    Options: (a) 1 and 2 only (b) 3 only (c) 1, 2 and 3 * (d) None

     

  • Asset Under Management (AUM)

    Why in the News?

    India’s Mutual Fund (MF) industry has witnessed exponential growth, with Assets Under Management (AUM) reaching ₹74.40 lakh crore as of June 2025, a sevenfold increase over the past decade.

    What are Assets Under Management (AUM)?

    • Definition: AUM refers to the total market value of financial assets (stocks, bonds, etc.) managed by an investment firm on behalf of clients.
    • Growth Drivers:
      • Net investor inflows and redemptions
      • Market performance
      • Dividend reinvestments
    • Importance:
      • Indicates fund size, investor confidence, and fund stability
      • Reflects fund manager performance and popularity
      • Higher AUM allows better liquidity and portfolio diversification
      • Impacts management fees and minimum investment limits

    What is a Mutual Fund?

    • Definition: A mutual fund pools money from multiple investors to invest in a diversified portfolio.
    • Management: Handled by professional fund managers to balance risk and return.
    • Unit-Based Investment: Investors purchase fund units; each unit’s value is called the Net Asset Value (NAV), which changes with market movement.

    Classification of Mutual Funds

    a. Based on Asset Class:

    1. Equity Funds: Invest in stocks; includes large-cap, mid-cap, and small-cap funds.
    2. Debt Funds: Invest in bonds and other fixed-income instruments.
    3. Hybrid Funds: Mix of equity and debt for balanced risk-return.

    b. Based on Investment Objective:

    1. Growth Funds: Focus on capital appreciation; suitable for long-term investors.
    2. Income Funds: Aim for regular income via bonds/dividends.
    3. Liquid Funds: Invest in short-term debt; low risk and high liquidity.
    4. Tax-saving Funds (Equity Linked Savings Scheme): Offer Section 80C tax benefits; equity-focused.
    5. Pension Funds: Meant for retirement; long-term return-focused.

    c. Based on Structure:

    1. Open-ended Funds: Investors can enter or exit anytime; highly liquid.
    2. Closed-ended Funds: Fixed maturity; investments only during the initial offer period.
    3. Interval Funds: Allow purchase/redemption only at specific intervals.

     

    [UPSC 2025] Consider the following statements:

    I. India accounts for a very large portion of all equity option contracts traded globally, thus exhibiting a great boom. II. India’s stock market has grown rapidly in the recent past, even overtaking Hong Kong’s at some point in time. III. There is no regulatory body either to warn small investors about the risks of options trading or to act on unregistered financial advisors in this regard.

    Which of the statements given above are correct?

    Options:  (a) I and II only * (b) II and III only (c) I and III only (d) I, II and III