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GS Paper: GS3

  • Revising Guidelines to declare Eco-Sensitive Zones (ESZ)

    Why in the News?

    The Standing Committee of the National Board for Wildlife (SC-NBWL) has decided to review and revise the 2011 guidelines on the declaration of Eco-Sensitive Zones (ESZs) around wildlife sanctuaries and national parks.

    What are Eco-Sensitive Zones (ESZs)?

    • Overview: ESZs, also called Ecologically Fragile Areas (EFAs), are areas notified by the Ministry of Environment, Forest and Climate Change (MoEFCC) around Protected Areas (PAs) like national parks and wildlife sanctuaries.
    • Purpose:
      • Act as “shock absorbers” to protect areas by regulating potentially harmful activities.
      • Serve as transition zones from highly protected to less protected ecosystems.
      • Help conserve biodiversity, maintain landscape connectivity, and prevent fragmentation of habitats.
    • Legal Basis:
      • Environment (Protection) Act, 1986, particularly Section 3(2)(v).
      • Rule 5(1) of Environment (Protection) Rules, 1986.
    • Wildlife Conservation Strategy, 2002: Recommended declaring 10 km radius around PAs as default ESZ.
    • Demarcation Process:
      • ESZ boundaries vary in width based on ecological sensitivity and ground realities.
      • Factors considered: species presence, migration routes, landscape linkage, human settlements, etc.
    • Activity Zonation:
      • Prohibited: Commercial mining, polluting industries, major hydro projects, wood logging.
      • Regulated: Tree felling, large-scale agriculture change, road widening, tourism infrastructure.
      • Permitted: Rainwater harvesting, organic farming, green energy use.
    • Present Status:
      • 347 final notifications issued.
      • Where no ESZ is notified, a default 10-km ESZ is applicable (SC 2022 ruling).

    2011 Guidelines on ESZs:

    • Issued by MoEFCC to standardize and guide the process of ESZ declaration.
    • Key Features:
      • Emphasized flexibility and site-specific demarcation.
      • Classified activities into permitted, regulated, prohibited.
      • Directed preparation of a Zonal Master Plan (ZMP) within 2 years of ESZ notification.
      • Called for community involvement, scientific input, and buffer management.

    Recent Context:

    • Reasons Behind: Revision One-size-fits-all (10-km blanket rule) is not effective:
      • Urban examples: Sanjay Gandhi National Park (Mumbai), Asola Bhatti Sanctuary (Delhi).
      • In Himachal Pradesh, ~65% area already under forest cover.
      • Kerala: Fear of new sanctuary leading to more restrictions.
    • Over-generalized: Existing guidelines unsuitable for marine sanctuaries, need ecosystem-specific norms.
    [UPSC 2014] With reference to ‘Eco-Sensitive Zones’, which of the following statements is/are correct?

    1. Eco-Sensitive Zones are the areas that are declared under the Wildlife (Protection) Act, 1972.

    2. The purpose of the declaration of Eco-Sensitive Zones is to prohibit all kinds of human activities in those zones except agriculture.

    Select the correct answer using the code given below.

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

     

  • [pib] Sanchar Mitra Scheme

    Why in the News?

    The Department of Telecommunications (DoT) has launched an expanded Sanchar Mitra Scheme to engage engineering students as digital ambassadors for promoting telecom literacy, digital safety, and citizen engagement.

    What is the Sanchar Mitra Scheme?

    • Launching Body: An initiative by the Department of Telecommunications (DoT), Government of India.
    • Primary Aim: To engage student volunteers as “Sanchar Mitras” or digital ambassadors to spread awareness about telecom-related issues.
    • Purpose:
      • Bridge the communication gap between citizens and the telecom ecosystem.
      • Promote safe and informed use of telecom services.
      • Encourage public participation in India’s digital transformation.
    • Implementation Status:
      • Piloted in select institutions.
      • Now being scaled up for nationwide rollout.

    Key Features and Highlights:

    • Target Audience: It primarily targets students from engineering and technical backgrounds such as telecommunications, computer science, electronics, and cybersecurity.
    • Selection of Volunteers: Students will be nominated as Sanchar Mitras in consultation with DoT field units and educational institutions.
    • Training Modules: Volunteers will be trained to conduct grassroots campaigns on cyber fraud prevention, EMF radiation concerns, and responsible digital behavior.
    • Training Institutions: Training will be delivered by the National Communications Academy–Technology (NCA-T) and the Media Wing of the DoT.
    • Core Pillars: The scheme is structured around three key pillars: Connect, Educate, and Innovate.
    • Tech Awareness Promotion: Sanchar Mitras will promote awareness on emerging telecom technologies like 5G, 6G, AI, and cybersecurity.
    • Community Outreach: Students will engage with communities, NGOs, and schools to foster a culture of informed digital citizenship.
    • Strategic Alignment: It aligns with India’s strength in the “Four Ds”: Democracy, Demography, Digitisation, and Delivery.
    [UPSC 2010] Which among the following do/does not belong/belongs to the GSM family of wireless technologies?

    Options: (a) EDGE (b) LTE (c) DSL* (d) Both EDGE and LTE

     

  • [pib] E-Truck Incentive Scheme

    Why in the News?

    The Ministry of Heavy Industries (MHI) has launched E-Truck Incentive Scheme to provide financial incentives for electric trucks (e-trucks) under the PM E-DRIVE initiative.

    What is E-Truck Incentive Scheme?

    • Overview: It is a dedicated scheme to provide financial incentives for electric trucks under the broader PM E-DRIVE initiative.
    • First-of-its-Kind Support: This is the first direct government support specifically for electric trucks to promote clean, efficient, and sustainable freight mobility.
    • Target Vehicle Categories: It targets N2 and N3 category trucks, as per Central Motor Vehicle Rules (CMVR):
      • N2: GVW above 3.5 tonnes up to 12 tonnes
      • N3: GVW above 12 tonnes up to 55 tonnes
    • Incentive for Articulated Vehicles: For articulated vehicles, the incentive applies only to the puller tractor of the N3 category, not the trailer.
    • Warranty Requirements:
      • Battery: 5 years or 5 lakh km, whichever comes first
      • Motor & Vehicle: 5 years or 2.5 lakh km
    • Incentive Details:
      • Based on Gross Vehicle Weight (GVW)
      • Maximum support capped at ₹9.6 lakh per e-truck
      • Incentives are given as upfront discounts, reimbursed to Original Equipment Manufacturers (OEMs) through the PM E-DRIVE portal
    • Deployment Goal: It aims to support the deployment of 5,600 electric trucks across India.
      • 1,100 trucks reserved for Delhi, with ₹100 crore allocated due to high pollution levels
    • Mandatory Scrappage Clause: To qualify, applicants must scrap an old diesel truck via scrappage centres approved by the Ministry of Road Transport and Highways (MoRTH).
    • Sectoral Impact: It is expected to benefit sectors like steel, ports, cement, and logistics by reducing fuel costs and improving air quality.

    About PM E-DRIVE Scheme:

    • Overview: It stands for Prime Minister’s Electric Drive Revolution in Innovative Vehicle Enhancement, launched by the Ministry of Heavy Industries in September 2024.
    • Long-Term Goal: To to foster an EV ecosystem, reduce carbon emissions, and help India achieve Net Zero emissions by 2070.
    • Budget Allocation: It has a total outlay of ₹10,900 crore for two years, aimed at accelerating India’s electric mobility transition.
    • Scope and Coverage: It supports multiple vehicle categories: Two-wheelers; Three-wheelers; Electric trucks; Electric buses and Electric ambulances.
    • Demand Incentive: It provides direct demand incentives to buyers through OEMs, lowering the upfront cost of EVs.
    • Category-wise Allocation:
      • 3,679 crore: For two-wheelers, three-wheelers, ambulances, and trucks
      • 500 crore: Specifically for electric ambulance procurement
      • 4,391 crore: To procure 14,028 electric buses in 9 major cities (Delhi, Mumbai, Kolkata, Chennai, Ahmedabad, Surat, Bangalore, Pune, Hyderabad)
    • Charging Infrastructure: ₹2,000 crore allocated to build 72,300 public charging stations nationwide, including:
      • Fast chargers for four-wheelers, buses, two-wheelers, and three-wheelers
    • Digital E-Voucher System:
      • Incentives claimed through Aadhaar-authenticated e-vouchers
      • Signed digitally by both buyer and dealer for transparency
    • Vehicle Scrappage Mandate: Scrapping of old vehicles is mandatory to claim certain incentives, especially for electric trucks, promoting fleet modernization.

     

    [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

     

  • Bridge too far: A regular audit of all major infrastructure projects is a must

    Why in the News?

    Recently, a span of a 40-year-old bridge collapsed in Vadodara, Gujarat, on July 9, sending multiple vehicles into the Mahisagar river and resulting in the death of 18 people.

    What causes recurring public infrastructure failures in India?

    • Ageing and outdated infrastructure: Many structures like the Morbi suspension bridge (2022) in Gujarat had exceeded their intended lifespan, yet continued to be in use without adequate upgrades.
    • Overuse and overload beyond design capacity: Bridges and roads originally designed for lower traffic volumes now face high urban and industrial load, as seen in the Indrayani pedestrian bridge collapse in Pune (2024) due to overloading.
    • Neglect and poor maintenance: Lack of routine inspections and maintenance led to incidents like the Vadodara bridge collapse (2024), where locals had raised concerns that were ignored by authorities.
    • Institutional inefficiency and under-resourcing: Municipal and local bodies often remain understaffed and underfunded, unable to monitor and maintain growing infrastructure needs, especially in peri-urban areas.
    • Lack of accountability and transparency: Even after fatal accidents like the Mizoram railway bridge girder collapse (2023), failure analysis reports are rarely made public, limiting systemic learning and corrective action.

    What is Peri-urban infrastructure? 

    Peri-urban infrastructure refers to the basic facilities and services (like roads, bridges, water supply, drainage, electricity, etc.) found in the transitional zones between urban and rural areas.

    Why is peri-urban infrastructure more prone to collapse?

    • Unregulated and informal urban expansion: Peri-urban areas often develop without proper zoning laws, building codes, or infrastructure planning. This results in substandard construction, making infrastructure vulnerable to collapse. In many Indian outskirts, flyovers and water systems are built around unplanned colonies, lacking load assessment.
    • Jurisdictional ambiguity and poor coordination: Peri-urban regions often fall between urban and rural governance structures, leading to confusion in responsibility for maintenance and oversight. In Delhi NCR’s fringes, conflicts between municipal bodies and panchayats delay repair and auditing of key infrastructure.
    • Low visibility and weak political prioritization: These areas lack media attention and political pressure seen in core urban centres, resulting in deferred maintenance. In Hyderabad’s outer zones, repeated complaints about weakening culverts were ignored until seasonal floodingcaused failure.

    How can AMRUT and UIDF improve asset upkeep?

    • Focused maintenance and retrofitting: AMRUT 2.0 prioritizes the retrofitting of old urban infrastructure such as pipelines, water supply, and sewerage systems. Eg: In cities like Agra and Pune, AMRUT funding has helped upgrade outdated drainage systems to prevent floodingand infrastructure degradation.
    • Targeted financial support for smaller cities: UIDF provides low-cost loans to Tier-2 and Tier-3 cities that often lack budgetary resources for upkeep. Eg: In peri-urban areas of Madhya Pradesh, UIDF enabled the repair of worn-out roads and bridges strained by rapid population growth.
    • Promotion of digital monitoring and audits: Both schemes encourage the use of geo-tagging and digital tracking tools to monitor asset health and schedule timely repairs. Eg: Cities like Bhubaneswar and Surat use AMRUT-linked dashboards to track infrastructure health and flag issues before failures occur.

    What gaps delay audits and accountability post-collapse?

    • Jurisdictional overlap between agencies: Multiple departments—urban development, public works, and local bodies—often share responsibility for infrastructure. This leads to confusion over which authority must initiate audits after a collapse. Eg: After a flyover collapse in Hyderabad, delays occurred as both the GHMC and state PWD passed the responsibility to each other.
    • Political interference and blame-shifting: In high-profile accidents, inquiries are sometimes delayed or diluted due to political pressures or attempts to shield influential contractors. Eg: In the Kolkata Vivekananda flyover collapse (2016), early accusations were politicized, stalling a clear and prompt audit process.

    Way forward: 

    • Establish a unified statutory audit authority: Create a dedicated, independent body responsible for conducting post-collapse audits across all public infrastructure, ensuring timely investigations, clear jurisdiction, and mandatory public disclosure of findings.
    • Implement real-time digital monitoring systems: Use GIS mapping, IoT sensors, and AI-based predictive maintenance tools to track structural health and alert authorities proactively, minimizing risks and improving accountability.

    Mains PYQ:

    [UPSC 2014] Explain how Private Public Partnership arrangements, in long gestation infrastructure projects, can transfer unsustainable liabilities to the future. What arrangements need to be put in place to ensure that successive generations’capacities are not compromised?

    Linkage: The article highlights several incidents of catastrophic public infrastructure failures in India, such as a 40-year-old bridge collapse in Vadodara, a pedestrian bridge collapse in Pune, and a metro pillar collapse in Bengaluru. This PYQ is highly relevant as it directly addresses the critical themes of long-term infrastructure management, potential liabilities, and ensuring future capacity.

  • UNEP Frontiers 2025 Report on Legacy Pollutants

    Why in the News?

    The United Nations Environment Programme (UNEP), in its latest Frontiers 2025 report titled The Weight of Time, has warned that increased river and coastal flooding caused by climate change could unearth dangerous legacy pollutants from water bodies.

    About Legacy Pollutants:

    • Definition: Legacy pollutants refer to toxic substances like heavy metals and persistent organic pollutants (POPs) that continue to remain in the environment even decades after their use has been banned or restricted.
    • Examples:
      • Heavy Metals: Lead, Cadmium, Mercury, Arsenic.
      • Persistent Organic Pollutants (POPs):
        • Pesticides: DDT (Dichlorodiphenyltrichloroethane), Aldrin, Endrin, Chlordane.
        • Industrial Chemicals: PCBs (Polychlorinated Biphenyls), Dioxins, Furans.
        • By-products: Produced from incineration, metal smelting, and waste burning.
    • Persistence: These substances are highly resistant to environmental degradation and accumulate in riverbeds, lakes, estuaries, and other sediment-rich ecosystems.
    • Health Hazards: Even at low exposure levels, legacy pollutants can cause: Neurotoxicity (nervous system damage), Immunotoxicity (immune disruption), Hepatotoxicity (liver damage), Reproductive toxicity (infertility, birth defects), Carcinogenicity (various cancers), Endocrine disruption etc.
    • Sources:
      • Past industrial practices, use of banned agricultural chemicals, and obsolete pesticide stockpiles.
      • Improperly managed chemical landfills, which still hold an estimated 4.8–7 million tonnes of POP waste globally.

    UNEP Frontiers 2025 Report on Legacy Pollutants

    Key Highlights of Frontiers 2025: The Weight of Time (UNEP):

    • Retreat of Toxins: Climate change-induced flooding can unearth and redistribute toxic legacy pollutants from contaminated sediments into the environment and food chain.
    • How? Floodwaters re-suspend heavy metals and POPs trapped in sediment.
    • Case Studies Cited:
      • Hurricane Harvey (Texas, 2017): Released mercury and carcinogenic chemicals from flood-induced sediment dispersal into Galveston Bay.
      • Niger Delta Floods (Nigeria, 2012): Mobilised Polycyclic Aromatic Hydrocarbons (PAHs) from oil-contaminated sediments.
      • Pakistan Floods (2010 & 2022): Washed away obsolete pesticide stockpiles, spreading DDT and other POPs into floodwaters and soils.
    • India-Specific Findings:
      • Sediments of Ganga, Hindon, and Vaigai Rivers show dangerously high levels of Cadmium.
      • Cadmium is a known carcinogen and endocrine disruptor, with potential to cause kidney, bone, and reproductive harm.
      • Ayad and Vaigai Rivers also showed up deadly levels of Lead concentration.
    [UPSC 2016] Which of the following can be found as pollutants in the drinking water in some parts of India?

    1. Arsenic 2. Sorbitol 3. Fluoride 4. Formaldehyde 5. Uranium

    Options: (a) 1 and 3 only (b) 2, 4 and 5 only (c) 1, 3 and 5 only* (d) 1, 2, 3, 4 and 5

     

  • [10th July 2025] The Hindu Op-ed: How can cat bonds plan for a natural disaster?

    PYQ Relevance:

    [UPSC 2024] What is disaster resilience? How is it determined? Describe various elements of a resilience framework. Also mention the global targets of the Sendai Framework for Disaster Risk Reduction (2015-2030).

    Linkage: This PYQ, focusing on “disaster resilience” and “Disaster Risk Reduction (DRR),” provides an excellent framework to discuss how catastrophe bonds (cat bonds) function as a financial planning tool for natural disasters. The article “Catastrophe Bonds: Insuring India’s Future Against Disasters” directly addresses the need for such instruments in India’s disaster management strategy.

     

    Mentor’s Comment:  Catastrophe bonds (cat bonds) are in the spotlight as India explores innovative disaster risk financing amid rising climate-related calamities. With low disaster insurance penetration, India is considering cat bonds to strengthen post-disaster response, reduce fiscal shocks, and lead a regional South Asian initiative. Global success stories and India’s proactive mitigation funding have revived interest in adopting this financial tool.

    Today’s editorial analyses the Catastrophe bonds (cat bonds). This topic is important for  GS Paper III (Disaster Management) in the UPSC mains exam.

    _

    Let’s learn!

    Why in the News?

    As climate change causes more frequent disasters, countries and insurers are using cat bonds to manage risk. These bonds help raise funds from markets for recovery and rebuilding after disasters.

    What are catastrophe bonds?

    • Catastrophe bonds are risk-linked securities that transfer disaster risk from issuers (usually governments or insurers) to investors. They are triggered when a predefined catastrophic event (like an earthquake, cyclone, or flood) occurs.
    • Eg: The World Bank issued cat bonds for Mexico and Pacific Island countries to cover tropical cyclone and earthquake risks.

    How do they function as instruments for disaster risk financing?

    • Governments (sponsors) pay premiums, and the principal becomes the insured sum; if a disaster hits, investors lose their principal, which goes to recovery. Intermediaries like the World Bank issue the bond, ensuring reliability and reduced counter-party risk.
    • They ensure quicker payouts, reduce dependency on budget allocations, and transfer risk away from insurers to global markets.

    Why is disaster risk insurance penetration low in India?

    • Lack of Awareness and Financial Literacy: Many individuals, especially in rural and hazard-prone areas, are unaware of the importance or availability of disaster insurance. Eg: Farmers vulnerable to floods or droughts often rely on government relief instead of purchasing crop insurance.
    • High Premium Costs and Perceived Low Returns: Insurance premiums are often considered unaffordable or unnecessary, especially when disasters seem unlikely in the short term. Eg: Urban households in seismic zones like Delhi-NCR rarely insure homes against earthquakes.
    • Limited Private Sector Participation and Poor Outreach: The insurance market remains underdeveloped, with few disaster-specific products and limited last-mile delivery mechanisms. Eg: MSMEs in coastal Odisha remain uninsured despite repeated cyclone exposure due to poor insurer penetration.

    How can cat bonds address this gap?

    • Access to Global Capital Markets: Cat bonds transfer disaster risk from governments to global investors, increasing the funding pool for post-disaster recovery. Eg: After Hurricane Maria (2017), Mexico accessed $150 million via a World Bank-backed cat bond, enabling rapid relief.
    • Ensure Quick Payouts for Emergencies: Cat bonds use trigger-based mechanisms (e.g. earthquake magnitude, wind speed) to enable fast disbursement of funds. Eg: In 2021, the Philippines received $52.5 million within weeks after Typhoon Rai, due to pre-agreed cat bond triggers.
    • Reduce Fiscal Pressure on Governments: Pre-disaster financing through cat bonds helps avoid budget shocks and reduce dependency on ad-hoc aid or borrowing. Eg: A cyclone-risk cat bond for Bay of Bengal can pre-finance relief for Odisha and Andhra Pradesh.

    How can India benefit from a regional South Asian cat bond?

    • Shared Risk Pooling for Cost Efficiency: By joining a regional cat bond with countries like Nepal, Bangladesh, and Sri Lanka, India can pool disaster risks, reducing the premium burden and increasing affordability. Eg: The Pacific Catastrophe Risk Insurance Company (PCRIC) pools risk for Pacific island nations, lowering overall costs.
    • Boosts Regional Cooperation and Preparedness: A shared bond encourages joint early warning systems, emergency planning, and data sharing, improving collective disaster readiness. Eg: SAARC Disaster Management Centre can coordinate common triggers and payout parameters across South Asia.
    • Access to Larger and Diverse Capital Markets: A regional bond can attract more global investors by offering diversified risk, improving fund availability post-disaster for quick response and recovery. Eg: The World Bank’s Southeast Asia Disaster Risk Insurance Facility (SEADRIF) supports countries like Laos and Myanmar through pooled financing.

    What are the key risks in designing and implementing cat bonds?

    • Basis Risk (Mismatch Between Trigger and Actual Loss): There’s a risk that the bond may not pay out even when severe losses occur, if the predefined trigger (e.g., earthquake magnitude or rainfall level) is not met, undermining trust and utility.
    • High Setup and Transaction Costs: Cat bonds require specialized modeling, legal structuring, and investor engagement, which may be too complex or expensive for lower-income or disaster-prone regions without external support.

    Why should India diversify its disaster financing amid climate risks?

    • Rising Frequency and Intensity of Disasters: Climate change is increasing the number of extreme weather events like floods, cyclones, and droughts. Sole reliance on budgetary support and relief funds is unsustainable, making diversified financing (like cat bonds, parametric insurance) essential.
    • Reducing Fiscal Burden and Ensuring Faster Relief: A diversified disaster financing system helps minimize delays in post-disaster response and lessens pressure on state and central budgets, allowing for quick payouts and resilient recovery.

    Way forward:

    • Promote Risk-Based Financing Instruments: Encourage the use of catastrophe bonds, parametric insurance, and public-private partnerships to diversify disaster risk funding and ensure timely payouts.
    • Strengthen Institutional Capacity and Data Systems: Develop robust disaster risk assessment tools, improve climate modelling, and integrate early warning systems to design effective and credible financial instruments.
  • Death by negligence: The Railways must ensure interlocked gates at all manned level crossings

    Why in the News?

    Recently, three schoolchildren lost their lives on Tuesday (July 8, 2025) when a fast-moving passenger train hit their school van at a manned railway crossing in Semmankuppam, Cuddalore district, Tamil Nadu, and dragged it for about 50 metres. The Railways should make sure that all manned level crossings have interlocked gates for better safety.

    What makes non-interlocked crossings more dangerous than interlocked ones?

    • Non-interlocked crossings rely solely on the gatekeeper’s alertness and manual judgment.
    • Interlocked gates are linked to train signals, which only turn green if the gate is securely closed, ensuring safety.
    • Human error is more likely at non-interlocked gates, leading to higher risk of accidents.

    Why are non-interlocked gates still in use despite safety concerns?

    • Delayed Infrastructure Projects: Projects to replace non-interlocked gates with overbridges or interlocked systems often face delays due to land acquisition and administrative hurdles. Eg: In Cuddalore, an underpass project funded by Indian Railways remained pending for over a year due to lack of clearance by local authorities.
    • Resource and Budget Constraints: The cost of upgrading thousands of level crossings requires significant investment, which may be postponed due to competing budgetary priorities.
    • Dependence on Manual Operation: Gatekeepers often face pressure from impatient motorists to open gates quickly, leading to protocol violations. Without automation, safety depends solely on their discretion and alertness.

    How do delays in land acquisition hinder safety infrastructure projects?

    • Stalls Construction of Critical Structures: Projects like railway overbridges (ROBs) and underpasses cannot begin without legal possession of land, leading to prolonged delays. Eg: In Bihar, the construction of a railway overbridge in Araria district was delayed by over 3 years due to disputes over land ownership and compensation, leaving an accident-prone level crossing operational.
    • Escalates Project Costs Over Time: Delays increase material and labour costs, making projects financially unviable or deprioritised later. ROBs planned years earlier often need revised budgets due to inflation and changing land prices.
    • Keeps High-Risk Crossings Operational: Until new infrastructure is built, dangerous level crossings remain in use, putting lives at risk. Eg: Many non-interlocked gates in Southern Railway zone remain active due to delayed land acquisition for safer alternatives.

    What are the steps taken by the Indian Government to improve railway crossing safety?

    • Phasing Out Unmanned Level Crossings (UMLCs): The Indian Railways eliminated all UMLCs on broad gauge lines by January 2020 to reduce accidents. Eg: Over 5,900 UMLCs were removed between 2014 and 2020 across Indian Railways.
    • Construction of Road Overbridges (ROBs) and Underpasses: Railway and State Governments jointly fund ROBs and underpasses to eliminate level crossings altogether. Eg: The Setu Bharatam Project aims to build 208 ROBs across India to improve safety.
    • Awareness and Training Programmes: Regular safety awareness drives and training for gatekeepers and the public are being undertaken. Eg: Campaigns like “Mission Zero Accident” educate local communities and railway staff about level crossing safety protocols.

    Why must Indian Railways urgently upgrade level crossings?

    • Prevent Fatal Accidents Due to Human Error: Non-interlocked crossings rely on manual judgment, making them prone to errors and tragic mishaps.
    • Enhance Operational Efficiency and Safety: Interlocked and automated systems ensure smoother train operations and reduce delays caused by manual gate coordination. Eg: Northern Railway’s use of interlocked gates near busy junctions like Ghaziabad has improved train punctuality and road traffic flow.
    • Reduce Pressure and Risk on Gatekeepers: Manual crossings burden gatekeepers with high responsibility and risk of protocol violations under pressure from motorists.

    Way forward: 

    • Accelerate Conversion to Interlocked Crossings: Prioritise high-risk and high-traffic areas for upgrading non-interlocked gates to fully interlocked systems with automated signalling to eliminate human error.
    • Fast-Track Land Acquisition for Infrastructure Projects: Implement time-bound clearances and simplified procedures for land acquisition to ensure timely construction of overbridges and underpasses, replacing hazardous level crossings.

    Mains PYQ:

    [UPSC 2024] What is the technology being employed for electronic toll collection on highways? What are its advantages and limitations? What are the proposed changes that will make this process seamless? Would this transition carry any potential hazards?

    Linkage: The PYQ asks about technology making a process “seamless”. The article explicitly states that interlocked gates, unlike non-interlocked systems, ensure that “train signals turn green only when gates are securely locked”. This technology-driven interlocking mechanism is presented as a “foolproof solution to prevent such fatal incidents”, as it removes the sole reliance on a gatekeeper’s alertness.

  • What are Optical Atomic Clocks?

    Why in the News?

    Researchers conducted the most precise global comparison of 10 Optical Atomic Clocks to pave the way for redefining the second by 2030, replacing Caesium Clocks with more accurate Optical ones.

    Definition of a Second:

    • The current SI unit of time is based on caesium-133 (Cs) atomic clocks.
    • In 1967, one second was defined as the duration of 9,192,631,770 cycles of radiation corresponding to the transition between two hyperfine levels of the ground state of a Cs-133 atom.
    • In these clocks, a microwave signal is tuned until Cs atoms react maximally, ensuring the frequency is precisely 9,192,631,770 Hz.
    • Frequency dividers count this microwave frequency, providing one tick per second, thus realizing the SI second.

    About Caesium Atomic Clocks:

    • Overview: Caesium atomic clocks are devices that define the current SI unit of time (second) using the oscillation frequency of caesium-133 atoms.
    • SI Second Standard: One second is defined as the duration of 9,192,631,770 cycles of microwave radiation corresponding to the transition between two energy levels of the caesium-133 atom.
    • Working Principle: These clocks work by tuning microwave signals to resonate with caesium atoms and then counting the resulting waves to measure time precisely.
    • Stability and Usage: They are highly stable and have been used since 1967 to set international time standards.
    • Applications: They are used in GPS systems, telecommunications, scientific research, and by national metrology institutions like India’s National Physical Laboratory (NPL).
    • Accuracy: A typical caesium atomic clock loses about one second every 300 million years.

    What are Optical Atomic Clocks?

    • Overview: They are advanced timekeeping devices that use optical (visible light) frequency transitions in atoms like Strontium (Sr) or Ytterbium (Yb).
    • Measurement Basis: These clocks measure time based on the oscillation of light emitted when atoms transition between energy levels at hundreds of trillions of Hz.
    • Example Frequencies:
      • Strontium: ~429 trillion Hz
      • Ytterbium ions: over 642 trillion Hz
    • Precision Tools: They require lasers and optical frequency combs to count these rapid oscillations accurately.
    • Future Standard: They are being tested worldwide and are expected to replace caesium clocks by 2030 for redefining the SI second.

    How Optical Atomic Clocks are Better than Caesium ones?

    • Higher Frequency Operation: Optical clocks operate at much higher frequencies, allowing division of time into finer intervals.
    • Improved Precision: By counting 10,000 times more oscillations per second, optical clocks achieve significantly higher precision and stability.
    • Unmatched Accuracy: An optical atomic clock using strontium reportedly drifts by less than one second in 15 billion years, compared to 300 million years for caesium clocks.
    • Advanced Applications: Their precision is critical for: Next-gen GPS systems, Gravitational wave detection, Climate monitoring and research etc.
    • Ultra-High Synchronization: Optical clocks enable cross-continental synchronization at 18 decimal place accuracy, essential for global time coordination.
    • Noise Resilience: They offer greater resistance to environmental noise and external disturbances, improving long-term reliability.
    [UPSC 2023] Which one of the following countries has its own Satellite Navigation System?

    Options: (a) Australia (b) Canada (c) Israel (d) Japan*

     

  • UN Framework Convention on Climate Change (UNFCCC)

    Why in the News?

    The UN Framework Convention on Climate Change (UNFCCC) negotiations are facing a credibility crisis, as years of underperformance, weak accountability, and neglect of developing countries’ concerns have created growing frustration.

    About the UN Framework Convention on Climate Change (UNFCCC):

    • Overview: The UNFCCC is an international treaty adopted at the 1992 Rio Earth Summit to address climate change by stabilizing greenhouse gas (GHG) concentrations in the atmosphere.
    • Entry into Force: The Convention entered into force on 21 March 1994 and currently has 197 Parties, including all UN member states.
    • Governing Body – COP: The Conference of the Parties (COP) is the supreme decision-making body under the UNFCCC, which meets annually to assess progress and set new targets.
    • Consensus-Based Process: The Convention operates on the principle of consensus, meaning all Parties must agree for a decision to be adopted.
    • Article 2 Objective: The objective of the UNFCCC, as per Article 2, is to stabilize GHG levels at a point that prevents dangerous anthropogenic interference with the climate system.
    • Key Agreements: The UNFCCC framework led to major global climate agreements such as the Kyoto Protocol (1997) and the Paris Agreement (2015).
    • Institutional Structure: It has three main institutional bodies:
      1. SBSTA: Subsidiary Body for Scientific and Technological Advice
      2. SBI: Subsidiary Body for Implementation
      3. UNFCCC Secretariat: Headquartered in Bonn, Germany
    • Party Classifications:
      • Annex I: Developed countries (OECD + Economies in Transition); Obligated to reduce GHG emissions and submit regular reports.
      • Annex II: Subset of Annex I (OECD members); Required to provide financial and technological support to developing countries.
      • Non-Annex I: Developing countries; No binding emission targets but eligible for support and encouraged to act voluntarily.
      • LDCs (Least Developed Countries): Low-income, highly vulnerable nations; Receive priority support under UNFCCC for adaptation and capacity building.

    India and the UNFCCC:

    • Ratification: India ratified the UNFCCC in 1993 and has participated actively in all COP meetings since then.
    • Party Classification: India is classified as a Non- Annex I Party, meaning it has no binding emission reduction targets under the Convention.
    • Paris Agreement Commitments: Under the Paris Agreement (2015), India submitted Nationally Determined Contributions (NDCs), including:
      • Reducing emissions intensity of GDP by 45% by 2030 from 2005 levels
      • Achieving 50% cumulative electric power capacity from non-fossil fuel sources by 2030
    • Climate Diplomacy:
      • India advocates the principle of Common But Differentiated Responsibilities and Respective Capabilities (CBDR–RC) in all negotiations.
      • India co-founded the International Solar Alliance (ISA) and launched the LiFE Movement (Lifestyle for Environment) to promote sustainable lifestyles.
      • India has opposed unilateral trade measures such as the EU’s Carbon Border Adjustment Mechanism (CBAM) at multiple climate forums.

    Issues with the UNFCCC Process:

    • Weak Enforcement: The process lacks enforcement mechanisms; countries that fail to meet commitments face no penalties.
    • Consensus Delays: The consensus-based approach often leads to delays and diluted agreements due to the ability of a few nations to block progress.
    • Unmet Commitments: Developed countries have not fulfilled the promised $100 billion per year in climate finance, which was due by 2020.
    • Neglected Developing Country Needs: Critical needs for adaptation finance, capacity building, and technology transfer remain largely unmet for developing nations.
    • Controversial Host Nations: The selection of host countries (e.g., UAE for COP28 and Azerbaijan for COP29) has drawn criticism due to their fossil fuel dependence.
    • Demand for Reforms: At the Bonn Climate Conference (2024), developing countries called for reforms such as:
      • Shifting to majority-based decision-making
      • Imposing limits on fossil fuel industry participation in climate talks
    [UPSC 2016] With reference to the Agreement at the UNFCCC Meeting in Paris in 2015, which of the following statements is/are correct?

    1. The Agreement was signed by all the member countries of the UN and it will go into effect in 2017.

    2. The Agreement aims to limit the greenhouse gas emissions so that the rise in average global temperature by the end of this century does not exceed 2°C or even 1.5°C above pre-industrial levels.

    3. Developed countries acknowledged their historical responsibility in global warming and committed to donate $1000 billion a year from 2020 to help developing countries to cope with climate change.

    Select the correct answer using the code given below:

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

     

  • Carbon Border Adjustment Mechanisms (CBAM)

    Why in the News?

    BRICS group has condemned and rejected the European Union’s Carbon Border Adjustment Mechanism (CBAM) and other similar climate-linked trade measures.

    What Is the Carbon Border Adjustment Mechanism (CBAM)?

    • Overview: It is a climate-related import duty imposed by the European Union on goods whose production involves higher carbon emissions than what is permitted in the EU.
    • Policy Framework: CBAM is part of the EU’s “Fit for 55” climate package, aimed at reducing greenhouse gas emissions by at least 55% by 2030 compared to 1990 levels.
    • Scope of Coverage: The policy requires importers to declare the volume and embedded carbon emissions of certain goods, such as steel, aluminium, cement, fertiliser, hydrogen, and electricity.
    • Compliance Mechanism: To offset these emissions, EU importers must surrender CBAM certificates, priced based on the EU Emissions Trading System (ETS).
    • Carbon Price Adjustment: If a non-EU producer has already paid a carbon price in their country, that amount can be deducted from the CBAM charge.
    • Implementation Timeline: The transitional phase of CBAM is underway from 2023 to 2025, and the definitive regime begins on January 1, 2026.

    Issues with CBAM:

    • Trade Discrimination Concerns: Developing countries, including India and China, argue that CBAM imposes unilateral, punitive, and discriminatory trade restrictions under the guise of environmental protection.
    • Violation of Climate Agreements: It is viewed as a violation of Paris Agreement, which upholds the principle of common but differentiated responsibilities.
    • Neglect of Historical Emissions: Countries in the Global South contend that climate-related trade tools like CBAM ignore historical emissions and disproportionately impact countries still reliant on carbon-intensive development.

    Implications of CBAM for India:

    • Impact on Exports: Indian exports, particularly in iron, steel, aluminium, and cement, will face additional scrutiny and carbon charges under CBAM, reducing their competitiveness.
    • Carbon Taxation Timeline: From January 1, 2026, carbon taxes will be levied on each shipment to the EU in specific sectors, ranging from 19.8% to 52.7% in potential carbon levies.
    • High Carbon Intensity Risk: India’s high carbon intensity, primarily due to its 75% dependence on coal, makes its products more vulnerable to CBAM tariffs.
    [UPSC 2023] Consider the following statements:

    Statement-I: Carbon markets are likely to be one of the most widespread tools in the fight against climate change.

    Statement-II: Carbon markets transfer resources from the private sector to the State.

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

    Options: (a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I (b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I ** (c) Statement-I is correct but Statement-II is incorrect (d) Statement-I is incorrect but Statement-II is correct