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GS Paper: GS3

  • NASA captures image of Mars’ Arsia Mons Volcano 

    Why in the News?

    NASA’s Mars Odyssey orbiter has captured a spectacular image of Arsia Mons, one of Mars’ largest volcanoes.

    mons

    About Arsia Mons Volcano:

    • Location: Arsia Mons is a massive shield volcano on Mars, located in the Tharsis region near the planet’s equator.
    • Volcanic Chain: It is part of the Tharsis Montes trio, which includes Pavonis Mons and Ascraeus Mons.
    • Size and Structure: The volcano rises about 20 km (12 miles) in height and spans 450 kilometres in diameter, making it one of the largest in the Solar System.
    • Summit Caldera: Arsia Mons has an enormous caldera, or summit crater, measuring 120 kilometres across, which is much wider than most Earth volcanoes.
    • Volcano Type: It is a shield volcano, characterised by gentle slopes formed through successive lava flows.
    • Surface Features: Signs of lava channels, landslides, and possible ancient glaciers have been observed on its flanks.
    • Cloud Activity: Known as the cloudiest volcano on Mars, Arsia Mons regularly develops water-ice clouds near its summit, especially at sunrise and during aphelion, when Mars is farthest from the Sun.

    Its Significance:

    • Recent Imaging: A new image released by NASA shows Arsia Mons piercing through morning haze, offering scientists a horizon-level view of Martian terrain.
    • Scientific Importance: Observations help researchers analyse Martian weather, seasonal climate patterns, and atmospheric behaviour.
    • Mission Relevance: Arsia Mons plays a key role in understanding Mars’ volcanic history, dust storm formation, and identifying future landing zones.
    • Exploration Support: Data from this region improve planetary weather models and assist in safe mission planning for upcoming robotic and human missions.

    Back2Basics: NASA’s Mars Odyssey Orbiter  

    • Launch: Mars Odyssey was launched in 2001, making it NASA’s longest-operating spacecraft at Mars.
    • Technology: The orbiter captured the Arsia Mons image using the THEMIS (Thermal Emission Imaging System) camera.
    • Capabilities: This instrument detects both visible and infrared light, allowing scientists to study surface temperatures, mineral compositions, and atmospheric properties.
    • Unique Technique: To photograph Arsia Mons against the Martian horizon, the orbiter rotated its camera 90 degrees, deviating from its usual ground-facing orientation.
    • Contributions: It continues to monitor climate changes, study volcanoes and dust storms, and assist with landing site selection.
    • Support Role: It also serves as a communication relay for other active Mars missions, enabling data transfer and navigation for landers and rovers.

     

    [UPSC 2016] Consider the following statements:

    The Mangalyaan launched by ISRO 1. is also called the Mars Orbiter Mission 2. made India the second country to have a spacecraft orbit the Mars after USA 3. made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt

    Which of the statements given above is/are correct?

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

     

  • [9th June 2025] The Hindu Op-ed: New study makes controversial weather-tweaking idea more realistic

    PYQ Relevance:

    [UPSC 2022] Discuss global warming and mention its effects on the global climate. Explain the control measures to bring down the level of greenhouse gases which cause global warming, in the light of the Kyoto Protocol, 1997.

    Linkage: The article highlight that the world needs to “lower its dependence on fossil fuels” because “greenhouse gas emissions are increasing worldwide,” leading to “rising surface temperatures”. The discussion around Stratospheric Aerosol Injection (SAI) in the sources is presented as a controversial technology proposed to “directly cool the planet rather than bank on reducing emissions alone” as a means of “reducing the impacts of climate change

     

    Mentor’s Comment:  The world needs to rely less on fossil fuels, but progress has been slow because of problems like war, poverty, and rising prices. As a result, greenhouse gas emissions are still going up. To deal with this, some scientists suggest using new technologies to cool the Earth directly, instead of only focusing on cutting emissions. One such method is Stratospheric Aerosol Injection (SAI), where tiny particles are sprayed into the upper atmosphere to block sunlight and reduce warming.

    Today’s editorial discusses the Stratospheric Aerosol Injection technique, a key topic for GS Paper III (Science, Technology & Environment), highlighting its potential, challenges, and relevance to climate change mitigation efforts.

    _

    Let’s learn!

    Why in the News?

    A recent study in the journal Earth’s Future shared a new idea that could make SAI cheaper and easier to use, even though many people are still against it.

    What was the new idea? 

    • Use of Existing Aircraft: Instead of waiting a decade and spending billions to build special high-altitude planes, the study proposes modifying existing aircraft (like the Boeing 777F) to spray aerosols at lower altitudes.
    • Low-Altitude Injection in Polar Regions: The study suggests carrying out aerosol injections at lower altitudes (around 13 km) in polar and extratropical regions, where the stratosphere is more easily reachable. This approach is more cost-effective, technically simpler, and can be implemented sooner.

    What is Stratospheric Aerosol Injection (SAI)?

    SAI is a proposed method of cooling the planet by injecting tiny reflective particles (aerosols) into the stratosphere. It is inspired by volcanic eruptions, which naturally cool the Earth by spewing particles that reflect sunlight. These aerosols reduce the amount of sunlight reaching the Earth’s surface, creating a cooling effect.

    Why is the spraying of aerosol needed?

    • To Reflect Sunlight and Cool the Planet: Aerosols (like sulphur dioxide) reflect some of the sun’s rays back into space, reducing the heat reaching Earth’s surface. Eg: The 1991 Mount Pinatubo eruption released sulphur dioxide, cooling Earth by about 0.5°C for over a year.
    • To Temporarily Reduce Global Warming Effects: SAI can lower atmospheric temperatures temporarily, helping to reduce severe climate effects like heatwaves, ice melt, and sea-level rise. Eg: A study showed spraying 12 million tonnes of sulphur dioxide at 13 km altitude could cool the planet by 0.6°C.
    • To Buy Time for Emissions Reductions and Climate Adaptation: While long-term solutions like clean energy are built, SAI could provide a temporary buffer against extreme climate impacts. Eg: It could delay serious effects like crop failure or habitat loss, allowing time for sustainable reforms.

    Why is low-altitude SAI seen as cost-effective?

    • No Need for Specialized Aircraft: Low-altitude SAI can be conducted using existing aircraft, avoiding the high costs of developing planes that fly above 20 km. Eg: Standard jets like the Boeing 777F can reach stratospheric levels in polar regions, making deployment more affordable.
    • Technically Less Challenging: Operating at lower altitudes reduces technical complexity, such as extreme temperature and pressure challenges faced at higher elevations. Eg: Modifying existing jets with pressurized tanks is easier than designing new high-altitude aircraft.
    • Faster Implementation Timeline: It enables quicker deployment, avoiding the 10-year delay and multi-billion dollar investment needed for high-altitude SAI systems. Eg: Using current infrastructure, SAI programs could begin much earlier to address urgent climate risks.

    Where is low-altitude injection feasible and why?

    • Feasible in Polar and Extratropical Regions: In these regions, the stratosphere starts at lower altitudes, making it accessible to standard aircraft. Eg: Over the Arctic or Antarctic, the tropopause (boundary between troposphere and stratosphere) is around 8–13 km, suitable for existing jets.
    • Infeasible Near the Equator: At equatorial regions, the stratosphere begins at 18 km or higher, which is beyond the reach of most commercial or military jets. Eg: Areas like Indonesia or the Amazon basin would require specially built aircraft for SAI.
    • Altitude Determines Aerosol Effectiveness: While higher altitude injections last longer in the atmosphere, lower altitude in polar zones allows SAI to be conducted with less cost and effort. Eg: Studies show that even at 13 km altitude in polar spring and summer, SAI can cool the planet by ~0.6°C with 12 million tonnes of sulphur dioxide.

    How does the use of existing aircraft like the Boeing 777F influence the implementation of SAI technology?

    • Reduces Deployment Costs: Using existing aircraft avoids the high capital expenditure needed to design and build specialized high-altitude jets. Eg: The Boeing 777F, a widely available cargo aircraft, can be adapted for SAI at lower stratospheric levels, cutting costs significantly.
    • Speeds Up Implementation: Existing jets can be modified and deployed faster, enabling earlier testing and potential use of SAI to address urgent climate risks. Eg: Building high-altitude aircraft may take nearly a decade, but using modified commercial planes could allow operations to start much sooner.
    • Requires Feasible Technical Modifications: Though not originally built for aerosol spraying, planes like the Boeing 777F can be retrofitted with specialized equipment. Eg: An August 2024 study proposed adding insulated double-walled pressurized tanks to safely carry and release sulphur dioxide.

    What are the Risks and Controversies of SAI?

    • Environmental and Health Side Effects: SAI could lead to acid rain, delayed ozone recovery, and unknown ecological disruptions due to aerosol particles in the atmosphere. Eg: Sulphur dioxide, commonly proposed for SAI, can form sulphuric acid in the atmosphere, harming ecosystems and human health.
    • Uneven Global Effects: SAI’s cooling impact may not be uniform worldwide, potentially benefiting some regions while worsening droughts, rainfall patterns, or crop yields in others. Eg: Cooling could be stronger in polar regions, while tropical areas, which face the worst climate impacts, may not benefit equally.
    • Governance and Ethical Concerns: SAI affects the entire planet, raising questions about who decides when, where, and how it’s used. It may lead to geopolitical tensions and misuse. Eg: A single country unilaterally injecting aerosols could trigger international disputes, especially if neighbouring regions suffer unintended consequences.

    Way forward: 

    • Establish a Global Governance Framework: International collaboration is essential to regulate research, testing, and potential deployment of SAI, ensuring transparency, accountability, and consent from all affected nations.
    • Focus on Complementary Climate Strategies: SAI should be treated as a temporary, supplementary tool, not a replacement for emission reduction. Massive investments must continue in renewables, carbon capture, and adaptation strategies. 

  • Consultative regulation-making that should go further

    Why in the News?

    India’s main financial regulators — the Reserve Bank of India (RBI) and the Securities and Exchange Board of India (SEBI) — have, for the first time, created clear step-by-step procedures for how they will create and update their rules.

    What procedural reforms have the RBI and SEBI recently introduced in regulation-making?

    • Mandatory Public Consultation: Both RBI and SEBI now require a 21-day window for public feedback before finalizing regulations. Eg: When SEBI proposes changes to investment guidelines, stakeholders can submit suggestions during this consultation period.
    • Introduction of Impact Analysis and Regulatory Objectives: RBI must conduct an impact analysis to assess the effect of new regulations. SEBI must state the regulatory intent and objectives behind any proposed rule. Eg: Before introducing digital lending norms, RBI must assess how it affects NBFCs and consumers.
    • Periodic Review of Existing Regulations: Both regulators are now required to periodically review existing laws to ensure relevance and effectiveness. E.g.: SEBI may revisit earlier mutual fund rules to assess if they align with current market dynamics.

    Why is identifying economic rationale important for regulatory interventions?

    • Targets Actual Market Failures: Ensures that regulations are introduced to solve real economic issues, not just perceived ones. Eg: RBI introducing regulations on digital lending platforms to tackle predatory lending practices.
    • Improves Resource Allocation: Helps in the efficient use of regulatory capacity and government resources by focusing only where intervention is necessary. Eg: SEBI focusing surveillance on high-risk investment products rather than low-risk ones.
    • Enables Evidence-Based Policy Making: Economic rationale demands data-backed decision-making, leading to more robust and defensible policies. Eg: Mandating minimum capital buffers after analysing risk exposure in banks post-2008 crisis.
    • Strengthens Cost-Benefit Analysis: Clarifies whether the expected benefits outweigh the compliance and administrative costs. Eg: Before enforcing stricter disclosure norms, SEBI can evaluate if the benefits to investors justify the burden on companies.
    • Increases Public and Stakeholder Trust: When the rationale is transparent, it builds confidence in the regulator’s objectivity and fairness. Eg: Clearly stating economic reasoning behind banning front-running in trading enhances credibility.

    How do international practices like those in the US and EU guide regulatory impact assessment?

    • Mandatory Cost-Benefit Analysis: US regulators must evaluate the economic impact of any regulation before adoption to ensure benefits outweigh costs. Eg: The Office of Information and Regulatory Affairs (OIRA) reviews federal regulations to minimize economic burdens.
    • Problem Identification and Alternatives Assessment: The EU’s Better Regulation Framework requires identifying the core problem, evaluating alternative policy options, and selecting the most effective one. Eg: EU energy efficiency regulations involved assessing multiple alternatives before finalizing appliance labeling norms.
    • Monitoring and Evaluation Frameworks: Both the US and EU emphasize post-implementation reviews to check if regulations achieve intended goals. Eg: The EU conducts ex-post evaluations as part of its regulatory cycle to ensure continuous improvement.

    When should regulations be reviewed and why?

    • At Pre-defined and Regular Intervals: Regulations should be reviewed periodically (e.g., every 3 years) to assess continued relevance. Eg: The IFSCA mandates review of its regulations every 3 years to align with changing market needs.
    • After Significant Economic or Sectoral Changes: Major changes like market failures, technological advancements, or crises should trigger a regulatory review. Eg: The COVID-19 pandemic led to a re-evaluation of financial sector norms to support liquidity and credit flow.
    • To Evaluate Effectiveness and Stakeholder Impact: Reviews help assess whether regulations have achieved their intended goals and consider public feedback. Eg: SEBI may review listing regulations based on feedback from companies and investors to enhance market transparency.

    Who can ensure uniform regulatory standards in India?

    • Parliament through Enactment of a Common Law: Parliament can introduce a standardised law (similar to the U.S. Administrative Procedure Act) to ensure consistent regulatory practices like impact assessments, public consultations, and periodic reviews across all regulators. Eg: A central Regulation-Making Procedure Act could mandate that all financial regulators follow uniform protocols.
    • Government Agencies Issuing Common Guidelines: The Central Government or NITI Aayog can issue model guidelines or frameworks to harmonise regulation-making procedures among regulators. Eg: Like the UK and Canada, India can adopt unified regulatory guidelines to promote transparency and accountability across SEBI, RBI, IFSCA, etc.

    Way forward: 

    • Enact a Unified Regulatory Procedure Law: Parliament should legislate a comprehensive framework for regulation-making that mandates impact analysis, public consultation, and periodic review across all regulators to ensure transparency and consistency.
    • Strengthen Institutional Capacity and Oversight: Build the capacity of regulatory bodies through training, digital tools, and staffing, and set up an independent oversight mechanism to monitor compliance with procedural norms and ensure accountability.

    Mains PYQ:

    [UPSC 2018] “Citizens’ Charter is an ideal instrument of organizational transparency and accountability, but it has its own limitations. Identify the limitations and suggest measures for greater effectiveness or the Citizens Charter.”

    Linkage: The theme of “consultative regulation-making that should go further” as discussed in “Crafting India’s Regulatory Future”. In the article primarily discusses financial regulators and the PYQ addresses the Citizens’ Charter, both embody the fundamental principle of existing governance mechanisms needing to evolve and be strengthened to achieve their stated objectives of transparency, accountability, and more effective public engagement, moving beyond a “nascent stage” or “welcome start” to truly “go further.”

  • Defence production in India receives a fillip

    Why in the News?

    After Operation Sindoor, India’s military strike against Pakistan in May, there has been a lot of talk about strategy — but it has also given a strong boost to India’s defence sector, especially to private companies and small businesses (MSMEs) involved in defence manufacturing.

    What impact did Operation Sindoor have on the performance of defence company stocks?

    • Sharp Rise in Defence Stocks: Defence company stocks surged by nearly 21% in the week when India conducted Operation Sindoor, significantly outperforming the broader market’s 3.1% rise in the Nifty50 index during the same period.
    • Sustained Positive Momentum: In the week following Operation Sindoor, defence stocks continued to rise by 5.4%, whereas the Nifty50 index actually declined by 0.5%, showing sustained investor confidence in the defence sector.
    • Reversal of Previous Underperformance: Before Operation Sindoor, defence stocks were lagging behind the top 50 companies on the National Stock Exchange, but the operation acted as a catalyst that boosted their performance substantially.

    Why is the growth in India’s defence production and exports significant?

    • Enhances Self-Reliance: The growth signals India’s increasing capability to produce defence equipment domestically, reducing dependence on imports. Eg, defence production reached a record ₹1.3 lakh crore in FY24, showing strong progress in indigenous manufacturing.
    • Boosts Economic and Strategic Strength: Rising defence exports, which have doubled since FY20 and crossed ₹20,000 crore in recent years, help strengthen India’s global defence market presence and contribute to economic growth. The government’s export target of ₹30,000 crore for the current fiscal reflects this ambition.
    • Encourages Innovation and Industry Growth: Sustained double-digit growth since FY22 encourages innovation and investment in defence technology, benefiting both public and private sectors.

    How have private companies and MSMEs contributed to India’s defence sector in recent years?

    • Growing Share in Defence Production: Private defence companies increased their share of total defence production from about 20% in FY17 to nearly 24% in FY25, showing their expanding role in the sector. Eg, companies like Paras Defence and Space Technologies have become prominent players.
    • Leading Role in Defence Exports: Private firms now account for the majority share of defence exports due to export authorisations, helping India expand its footprint in the global defence market. Eg, several private companies contribute to exports of small arms and protective gear.
    • MSMEs as Key Component Suppliers: MSMEs supply crucial components to the defence industry, with government procurement from MSMEs doubling the target to ₹13,000 crore in FY25. Eg, MSMEs provided goods worth around ₹3,000 crore between FY18 and FY20, with larger orders thereafter.

    When did defence production begin steady growth?

    • Defence production contracted by 2.5% in FY20 (pre-pandemic).
    • Since FY22, defence production has been seeing consistent double-digit growth.
    • The growth momentum continues with production touching nearly ₹90,000 crore by December 2024 against a target of ₹1.6 lakh crore for FY25.

    What are the steps taken by the Indian government? 

    • Promoting Domestic Manufacturing: The government has set ambitious targets to boost indigenous defence production, encouraging self-reliance. Eg, defence production crossed ₹1.3 lakh crore in FY24 and is targeted at ₹1.6 lakh crore in FY25.
    • Supporting MSMEs through Procurement: Mandatory public procurement targets have been set to ensure MSMEs receive steady orders and support. Eg, goods worth ₹13,000 crore were procured from MSMEs in FY25, more than double the target.
    • Encouraging Private Sector Participation: Policies have facilitated the growing involvement of private companies in defence production and exports. Eg, private companies increased their production share from 20% in FY17 to nearly 24% in FY25, and dominate defence exports.

    Way forward: 

    • Enhance Technology Upgradation and Innovation: Invest more in R&D and foster collaboration between public and private sectors to develop cutting-edge defence technologies, ensuring global competitiveness and self-reliance.
    • Strengthen MSME Integration and Export Support: Expand financial and policy support to MSMEs for scaling up production capacity and quality, and create dedicated export facilitation mechanisms to boost India’s defence exports further.

    Mains PYQ:

    [UPSC 2014] Defence manufacturing in India is still in a nascent stage. What influence this is expected to have on Indian defence and economy in the short and long run?

    Linkage: Recent data from the article clearly demonstrates a significant “fillip” in India’s defence production, directly linked with the “nascent stage” described in the 2014 PYQ. This 2014 question is highly relevant as it highlights a past perception that “defence manufacturing in India is still in a nascent stage. In this articel, the discussions on the efficacy and confidence in India’s home-grown defence capabilities have increased. Following “Operation Sindoor,” defence stocks of 18 companies on the Nifty Defence Index rose by almost 21% in a week in May, significantly outperforming the Nifty50 index.

  • Dynamic Route Planning for Urban Green Mobility (DRUM)

    Why in the News?

    IIT Kharagpur has made a web app called Dynamic Route Planning for Urban Green Mobility (DRUM) to help people choose travel routes that are not just fast but also have cleaner air and better energy use.

    About DRUM:

    • Purpose: It is a navigation tool that prioritises air quality and energy efficiency, offering a greener alternative to traditional mapping apps.
    • Data Usage: DRUM uses real-time data on air pollution and traffic conditions to recommend optimal routes.
    • Sources: Pollution information is collected from the Central Pollution Control Board (CPCB) and the World Air Quality Index.

    Important Features:

    • Routing Logic: DRUM applies a rank-based elimination method that prioritizes time, followed by distance, pollution exposure, and energy use.
    • Technical Tools: The app uses GraphHopper for route generation and Mapbox for live traffic updates.
    • Route Options: Users can choose from 5 routes — shortest, fastest, least pollution (LEAP), least energy use (LECR), and a balanced suggested route.
    • Live Updates: It retrieves real-time route data when a query is entered, not through scheduled updates.
    • Performance: In Delhi trials, the LEAP route cut pollution exposure by over 50%, and the LECR route reduced energy use by up to 28%.
    • Non-Motorized Inclusion: DRUM will expand to serve cyclists, pedestrians, and other non-motorized users.
    • Predictive Upgrade: DRUM 2.0, currently in development, will use machine learning to forecast pollution and traffic and recommend best routes and departure times.
    [UPSC 2025] Consider the following types of vehicles:

    I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell electric hybrid vehicles How many of the above are considered as alternative (powertrain) vehicles?

    Options: (a) Only one (b) Only two (c) All the three* (d) None

     

  • Rare Proton Emission in Astatine Isotope

    Why in the News?

    In a groundbreaking discovery, an international team of nuclear physicists from Finland has measured the proton emission and half-life of 188Astatine (188At)—the heaviest proton-emitting isotope ever observed.

    What is Proton Emission?  

    • Atomic Structure: Atoms are made up of a nucleus containing protons and neutrons, surrounded by electrons.
    • Radioactive Decay: When atoms are unstable, they become stable by emitting particles through a process called radioactive decay.
    • Common Emissions: Most atoms emit alpha particles, beta particles, or gamma rays during decay.
    • Rare Emission: In very rare cases, an atom can emit a proton, a process known as proton emission.
    • Conditions for Emission: Proton emission occurs only in proton-rich nuclei that lie on the extreme edge of nuclear stability.
    • Detection Difficulty: These atoms are extremely hard to create in laboratories and usually exist for less than a second, making them hard to study.

    Discovery of Proton Emission in 188-Astatine:

    • What is Astatine: Astatine (At) is a radioactive, halogenous element with atomic number 85, belonging to the halogen family (Group 17) on the periodic table. It’s a rarest natural element on Earth, not naturally occurring in significant quantities due to its short half-life.
    • Research Breakthrough: Scientists from Finland, India, and Portugal jointly studied a rare isotope called 188-Astatine.
    • Method: The atom was made by bombarding a silver target with strontium ions in a high-powered accelerator.
    • Observed Event: After its formation, 188-Astatine emitted a proton and transformed into polonium within 190 microseconds.
    • Role of Indian Scientists: Experts from IIT Roorkee used computer simulations to confirm the event and revealed that the atom’s shape resembled a watermelon, elongated and stretched.

    Significance of the Discovery:

    • Scientific First: This was the first recorded instance of proton emission from astatine, a rare and heavy element.
    • Understanding Atomic Limits: The discovery helps scientists learn how unstable atoms behave and where the proton-holding limits of atomic nuclei lie.
    • Contribution to Nuclear Science: It enhances our understanding of element formation in extreme environments like stars and nuclear reactors.
    • Future Implications: Such discoveries can contribute to medical advances, especially in developing radioactive materials for cancer treatment.
    [UPSC 2024] With reference to radioisotope thermoelectric generators (RTGs), consider the following statements:

    1. RTGs are miniature fission reactors. 2. RTGs are used for powering the onboard systems of spacecrafts. 3. RTGs can use Plutonium-238, which is a by-product of weapons development.

    Which of the statements given above are correct?

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

     

  • [7th June 2025] The Hindu Op-ed: Water management in India needs a new course

    PYQ Relevance:

    [UPSC 2013] Constitutional mechanisms to resolve the inter-state water disputes have failed to address and solve the problems. Is the failure due to structural or process inadequacy or both? Discuss.

    Linkage: India’s water management problems are explicitly stated to be a result of a “fragmented and sectoral approach”. This contrasts sharply with the need for a holistic “new course.” The existing situation is problematic because “rivers and other waterbodies are often interstate and multiple political jurisdictions are involved in administering the same waterbody”.

     

    Mentor’s Comment:  In 2025, global water governance takes a historic turn as the United Nations declares it the International Year of Glaciers’ Preservation and launches the Decade of Action on Cryospheric Science (2025–2034). These initiatives, aligned with World Water Day 2025 and World Day for Glaciers (March 21), focus directly on the vital connections between mountain glaciers, freshwater, and ocean ecosystems. They promote the “Source-to-Sea (S2S)” approach, which integrates water governance from glacial sources all the way to ocean outlets, acknowledging their ecological and hydrological continuity.

    Today’s editorial will talk about water governance in India and the world. It will help with GS Paper I (Geography), GS Paper II (Policy Making) and GS Paper III (Environment).

    _

    Let’s learn!

    Why in the News?

    Scientists and decision-makers need to pay attention to the Source to Sea (S2S) approach.

    What is the theme of World Water Day 2025?

    • Theme: Glacier Preservation
    • 2025 is also declared the International Year of Glaciers Preservation by the United Nations.
    • Marks the start of a Decade of Action on Cryospheric Science (2025-2034).

    Why is it significant?

    • Crucial Source of Freshwater: Glaciers act as natural water reservoirs, supplying freshwater to millions downstream. Their preservation ensures sustained water availability for drinking, agriculture, and ecosystems. Eg: The Himalayan glaciers feed rivers like the Ganga and Brahmaputra, supporting millions of people in India.
    • Indicator of Climate Change: Glaciers are sensitive to global warming; their rapid melting signals climate change impacts. Protecting them helps monitor and mitigate broader environmental risks. Eg: Melting Himalayan glaciers contribute to changing river flows, affecting flood and drought patterns in South Asia.
    • Supports Sustainable Development: Preserving glaciers helps maintain mountain ecosystems and supports downstream communities dependent on glacier-fed waters for their livelihoods and economic activities. Eg: Alpine glaciers support mountain agriculture and tourism, critical to local economies in regions like Uttarakhand and Himachal Pradesh.

    Why is the Source-to-Sea (S2S) approach important for global water governance?

    • Integrated Management of Water Systems: S2S treats freshwater and marine systems as a connected continuum, ensuring that actions upstream (rivers, lakes) consider their impact downstream (coastal and marine environments). Eg: Pollution control in river basins like the Ganges directly affects the health of the Bay of Bengal ecosystem.
    • Improves Coordination Across Jurisdictions: S2S promotes cooperation among multiple stakeholders and political jurisdictions, bridging fragmented governance to manage shared water resources effectively. Eg: The Manila Declaration encourages countries to work together on ridge-to-reef management to protect water quality from land to ocean.
    • Facilitates Sustainable Solutions for Water and Marine Challenges: By addressing the entire water cycle, S2S enables holistic strategies that tackle issues like pollution, water diversion, and habitat loss, benefiting both terrestrial and marine biodiversity. Eg: Initiatives under the SIWI Action Platform connect freshwater and marine experts to develop better water management practices globally.

    What is the cryosphere? 

    The cryosphere includes all frozen water parts of Earth, such as glaciers, snow, sea ice, and permafrost. It helps regulate the climate, reflects sunlight, and stores Earth’s freshwater.

    How does the changing mountain cryosphere impact downstream water resources?

    • Altered Water Flow Patterns: Melting glaciers and shrinking snowpacks change the timing and volume of water flow downstream, leading to seasonal water shortages or floods. Eg: Reduced glacial melt in the Himalayas affects the flow of rivers like the Ganges, impacting water availability for millions.
    • Reduced Water Storage Capacity: Glaciers act as natural reservoirs, storing water during cold months and releasing it slowly. Their retreat means less buffering capacity during dry periods, causing water stress downstream. Eg: Declining glacier size in the Alps affects water supplies for European river basins in summer.
    • Increased Risk of Natural Hazards: Glacier melt can lead to the formation and sudden breach of glacial lakes, causing flash floods and damaging downstream ecosystems and communities. Eg: Glacial Lake Outburst Floods (GLOFs) in the Himalayas pose risks to villages and infrastructure along rivers like the Indus.

    What are the key challenges India faces in managing its water resources? 

    • Groundwater Depletion: Over-extraction of groundwater for irrigation, industrial use, and domestic consumption has led to alarming depletion rates of aquifers. This poses a significant threat to long-term water availability and agricultural productivity. Eg, states like Punjab, Haryana, and Rajasthan report over 100% utilization of groundwater resources, leading to critical water scarcity.
    • Water Pollution: Water pollution from industrial effluents, untreated sewage, and agricultural runoff has made large quantities of freshwater unusable. According to the Central Pollution Control Board, more than 70% of India’s surface water is polluted, with rivers like the Ganga and Yamuna being majorly affected.
    • Climate Change and Erratic Weather Patterns: Changing rainfall patterns, prolonged droughts, and frequent floods induced by climate change are altering water availability. The Indian Meteorological Department has noted a decline in monsoon rainfall, which is critical for replenishing rivers, lakes, and groundwater reserves.

    What are the steps taken by the Indian Government?

    • Formulation and Revision of National Water Policies: The government introduced the first National Water Policy in 1987, and since then, it has been periodically updated to address emerging challenges. The latest draft policies emphasize integrated water resource management and sustainability. Eg, the 2019 draft National Water Policy focuses on water conservation, efficient use, and equitable distribution.
    • Institutional Reforms and Coordination Bodies: Committees have been set up to improve water governance by restructuring key institutions. Eg, in 2015, a committee was formed to merge the Central Water Commission and Central Ground Water Board into a unified National Water Commission to foster better coordination and planning.
    • Promotion of Sustainable and Integrated Approaches: The government supports approaches like Source-to-Sea (S2S) management, which integrates land, freshwater, coastal, and marine resource management. Eg, pilot projects in the Indo-Gangetic basin and Delhi waterbodies are being explored under the S2S framework to address pollution and water quality comprehensively.

    Way forward: 

    • Adopt Source-to-Sea (S2S) Approach Nationwide: Implement integrated water governance that connects glacial sources to coastal ecosystems, ensuring coordinated action across sectors and regions.
    • Strengthen Climate-Resilient Water Infrastructure: Invest in glacier monitoring, early warning systems, and sustainable groundwater management to adapt to climate-induced water variability and safeguard water security.

  • PM inaugurates Chenab Railway Bridge

    Why in the News?

    Prime Minister inaugurated the world’s highest railway bridge over the Chenab River in Jammu and Kashmir.

    About the Chenab Rail Bridge:

    • Location: The Chenab Rail Bridge is the world’s highest railway bridge, situated over the Chenab River in Reasi district, Jammu and Kashmir. It is part of the Udhampur–Srinagar–Baramulla Rail Link (USBRL).
    • Height: The bridge rises to a height of 359 metres, which is 35 metres taller than the Eiffel Tower.
    • Structure and Length: It has a total length of 1,315 metres, comprising a 530-metre approach bridge and a 785-metre steel arch bridge.
    • Project Execution: Constructed by Konkan Railway Corporation, with contributions from Afcons Infrastructure, Ultra Construction & Engineering (South Korea), and VSL India.
    • Design and Engineering:
      • IISc Bengaluru designed the foundation.
      • IIT Delhi and IIT Roorkee conducted seismic analysis.
      • DRDO ensured it is blast-proof.
    • Durability and Safety: The bridge can withstand magnitude 8 earthquakes, blasts up to 40 tonnes of TNT, temperatures as low as -20°C, and wind speeds of 266 km/h.
    • Speed and Lifespan: It supports train speeds up to 100 km/h and has a lifespan of 120 years.
    • Key Milestones: The arch closure was completed in April 2021, and the Golden Joint Ceremony was held on August 13, 2022.

    PM also inaugurated Anji Bridge:

    • About: The Anji Bridge is India’s first cable-stayed railway bridge, built over the Anji River, a tributary of the Chenab.
    • Ranking: It is the second-highest railway bridge in India, after the Chenab Bridge.
    • Design: Originally planned as an arch bridge, the design was changed to cable-stayed due to geological challenges.
    • Structure Details: The total length is 725 metres, comprising an ancillary viaduct, approach bridge, and central embankment.
    • Features: It is supported by 96 cables ranging from 82 to 295 metres, with a deck width of 15 metres.
    • Resilience: The bridge is engineered to withstand seismic activity, unstable terrain, strong winds, heavy storms, and explosions.

     

    [UPSC 2025] Consider the following statements:

    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?

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

     

  • RBI’s Monetary Policy Committee (MPC) Decisions

    Why in the News?

    The RBI, in its Monetary Policy Committee (MPC) meeting, cut the Cash Reserve Ratio (CRR) by 1% to release ₹2.5 lakh crore into the banking system by November 2025.

    Key Changes Announced:

    • Cash Reserve Ratio (CRR) reduced by 1% in four tranches, bringing it down to 3% by November 29, 2025.
    • This CRR cut will release ₹2.5 lakh crore liquidity into the banking system by December 2025.
    • Statutory Liquidity Ratio (SLR) remains unchanged at 18% of Net Demand and Time Liabilities (NDTL).

    Key terms related to the MPC instruments:

    Explanation
    Cash Reserve Ratio (CRR)
    • CRR is the percentage of a bank’s total deposits that must be maintained as liquid cash with the RBI.
    • Banks cannot use this amount for lending or investment. No interest is earned on CRR.
    • It is used to control liquidity and inflation in the economy.
    • Increasing CRR reduces bank lending capacity; decreasing it increases liquidity.
    • Current CRR is 4.5% of Net Demand and Time Liabilities (NDTL).
    Statutory Liquidity Ratio (SLR)
    • SLR is the minimum percentage of NDTL that banks must maintain in liquid form.
    • It includes cash, gold, or approved government securities, kept with the bank itself.
    • It helps ensure bank solvency and restricts excessive credit growth.
    • Raising SLR reduces funds available for lending; lowering it boosts credit and growth.
    • It also helps the government ensure demand for its securities.
    Net Demand and Time Liabilities (NDTL)
    • It includes public deposits and balances held with other banks.
    • It excludes deposits the bank itself has with other banks.
    • Demand liabilities include current accounts and demand drafts.
    • Time liabilities include fixed deposits and recurring deposits.
    • CRR and SLR are calculated as a percentage of NDTL.
    Repo Rate
    • The repo rate is the rate at which the RBI lends short-term funds to commercial banks against government securities.
    • Banks sell securities to RBI with an agreement to repurchase them later.
    • Lower repo rate makes borrowing cheaper and boosts liquidity.
    • Higher repo rate makes borrowing costlier, reducing liquidity.
    • It is a key monetary policy tool to regulate inflation and money supply.
    Variable Rate Repo (VRR) Auction
    • VRR auction is a method where RBI conducts repo operations at variable interest rates.
    • Interest rate is determined through competitive bidding by banks.
    • It reflects real-time demand and supply of liquidity.
    • Enables more flexible and efficient liquidity management by RBI.
    Standing Deposit Facility (SDF)
    • SDF allows banks to deposit surplus funds with the RBI without providing any collateral.
    • Banks earn interest at a rate set by the RBI.
    • It is used to absorb excess liquidity from the system.
    • Part of RBI’s liquidity management framework.
    Weighted Average Call Rate (WACR)
    • WACR is the weighted average interest rate at which banks borrow and lend overnight funds in the interbank call money market.
    • It is an important indicator of short-term liquidity conditions.
    • RBI monitors WACR to guide monetary policy decisions.

     

    [UPSC 2020] If the RBI decides to adopt an expansionist monetary policy, which of the following would it not do?

    1. Cut and optimise the Statutory Liquidity Ratio.

    2. Increase the Marginal Standing Facility Rate.

    3. Cut the Bank Rate and Repo Rate.

    Select the correct answer using the code given below:

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

     

  • [6th June 2025] The Hindu Op-ed: Is IBC an effective resolution tool? | Explained

    PYQ Relevance:

    [UPSC 2018] How far do you agree with the view that tribunals curtail the jurisdiction of ordinary courts? In view of the above, discuss the constitutional validity and competency of the tribunals in India.

    Linkage: The Insolvency and Bankruptcy Code (IBC), India’s first comprehensive bankruptcy law enacted in 2016, fundamentally relies on a specialized tribunal system for its implementation. This system includes the National Company Law Tribunal (NCLT) and the National Company Law Appellate Tribunal (NCLAT). The effectiveness of the IBC as a resolution tool is intrinsically linked to the efficiency, competency, and operational challenges faced by these tribunals.

     

    Mentor’s Comment:  India’s Insolvency and Bankruptcy Code (IBC), started in 2016, has been running for over eight years now. It has helped recover ₹3.89 lakh crore with a recovery rate of 32.8%, changing how companies deal with unpaid debts. But delays in courts, problems after settlements, and a recent Supreme Court decision on Bhushan Steel have created new worries.

    Today’s editorial will talk about the effectiveness of the Insolvency and Bankruptcy Code (IBC) in India. It will help with GS Paper II (Policy Making) and GS Paper III (Banking).

    _

    Let’s learn!

    Why in the News?

    As India works towards becoming a $5 trillion economy, there is growing discussion about whether the IBC is ready for the future, whether its decisions are respected, and how efficient the courts are in handling cases.

    Why was the Insolvency and Bankruptcy Code (IBC) enacted in India in 2016?

    • To Establish a Time-bound Resolution Mechanism: The IBC aimed to replace India’s slow and fragmented insolvency system with a fast-track process for resolving distressed assets within a maximum of 330 days. Eg: Earlier, recovery through legal channels often took years; under IBC, cases like Essar Steel were resolved with clear timelines.
    • To Shift Control from Debtors to Creditors: It empowered creditors by giving them control over the insolvency process and discouraging willful default. Eg: In the case of Bhushan Steel, creditors approved Tata Steel’s resolution plan, overriding promoter control.
    • To Improve Recovery Rates and Credit Culture: IBC sought to improve debt recovery rates and create a culture of responsible borrowing and repayment. Eg: As per IBBI data, creditors have recovered over ₹3.89 lakh crore with an average recovery rate of 32.8%, much higher than earlier systems.

    What makes IBC the preferred route for debt recovery according to the RBI and IBBI data?

    • Highest Share in Total Recoveries: According to the RBI’s 2024 report, the IBC accounted for 48% of all recoveries made by banks in FY 2023-24, making it the dominant recovery mechanism. Eg: Compared to other channels like DRTs and SARFAESI, IBC recovered nearly half of total dues in just one financial year.
    • Better Realisation Than Liquidation: As per IBBI, resolution plans under IBC are yielding 93.41% of the fair value and 170.1% of liquidation value, showing greater efficiency. Eg: In the case of Electrosteel Steels, creditors recovered more than they would have in a liquidation scenario.
    • Timely Resolution and Settlement: The IBC’s time-bound process has led to early settlements, with 30,310 cases settled before admission, involving defaults worth ₹13.78 lakh crore. Eg: Companies facing insolvency threats often clear dues or settle quickly, improving the overall credit discipline.

    How has the IBC impacted the credit culture and corporate governance in India?

    • Improved Credit Discipline: The IBC has fostered a repayment-oriented credit culture by creating a credible threat of insolvency, discouraging willful defaults. Eg: The Supreme Court observed that “the defaulter’s paradise is lost,” reflecting a clear shift in borrower behavior post-IBC.
    • Reduction in NPAs: The IBC has contributed to a sharp fall in Gross Non-Performing Assets (NPAs), which declined from 11.2% in 2018 to 2.8% in 2024 for scheduled commercial banks. Eg: Many firms have restructured or repaid loans early to avoid IBC proceedings, improving asset quality in the banking sector.
    • Boosted Corporate Governance Standards: Firms resolved under IBC show better board practices, including a rise in the number of independent directors, enhancing transparency and accountability. Eg: A study by IIM Bangalore showed firms post-resolution had more professionalised management and stronger compliance norms.

    What are the key challenges currently affecting the effectiveness of the IBC framework?

    • Judicial Delays and Backlogs: Delays in approvals by the National Company Law Tribunal (NCLT) and prolonged litigation undermine the IBC’s goal of time-bound resolution. Eg: Even after creditor approval, resolution plans like that of Jaypee Infratech have been stuck for years due to legal battles, leading to erosion in asset value.
    • Post-resolution Uncertainty: Lack of legal finality and frequent challenges after plan approval create investor hesitation and risk derailment of settled cases. Eg: In the Bhushan Power and Steel case, a previously approved resolution plan was reopened, shaking confidence in the system.
    • Inadequate Framework for Emerging Assets: The IBC lacks clear mechanisms to deal with issues like intellectual property valuation, employee dues, and tech continuity, making it unfit for resolving non-traditional businesses. Eg: Tech start-ups and IP-heavy firms may not be efficiently resolved under current provisions, leading to value destruction.

    Why is the Bhushan verdict seen as a setback?

    • Erodes Commercial Certainty: The verdict questioned a resolution plan that had already been approved and operational for years, undermining the finality of the IBC process. Eg: The reopening of the Bhushan Power and Steel Ltd. case raised fears that even completed transactions are not immune from future legal scrutiny.
    • Deters Investor Confidence: If resolution applicants fear judicial reversal after making large investments, they may hesitate to participate, weakening the IBC’s appeal. Eg: A successful bidder may now think twice before committing to a resolution plan if legal sanctity isn’t guaranteed.
    • Delays in Execution and Recovery: Continuous litigation post-approval increases the risk of liquidation for otherwise viable firms due to delayed implementation. Eg: In the Bhushan case, years of uncertainty stalled asset utilisation, resulting in a loss of economic value.

    Way forward: 

    • Strengthen Tribunal Infrastructure and Capacity: Expand the capacity of NCLT and NCLAT by appointing more judges, improving case management systems, and digitising proceedings to reduce delays and ensure time-bound resolutions.
    • Ensure Legal Finality and Commercial Certainty: Introduce clear jurisprudential safeguards to prevent post-resolution litigations and uphold the sanctity of approved resolution plans, thereby boosting investor confidence and preserving the IBC’s credibility