💥Join UPSC 2027,2028 Mentorship (August Batch) + XFactor Notes & Microthemes PDF
Talk to Mentor

Civilsdaily

Login

GS Paper: GS3

  • Desert Soilification Technology

    Why in the News?

    For the first time, researchers at the Central University of Rajasthan (CUoR) have successfully grown wheat in arid land of western Rajasthan using desert soilification technology.

    What is Desert Soilification Technology?

    • Overview: It is an innovative biotechnological method that transforms barren desert sand into soil-like material capable of supporting agriculture.
    • Technology: It uses bioformulations and polymers to bind loose sand particles, improve soil texture, and enable water retention.
    • Utility: It is designed to combat desertification, enhance agricultural productivity in arid zones, and ensure sustainable land use.
    • How does it work?
      • Polymer-based Bioformulation: Natural polymers and microbial formulations are applied to desert sand.
      • Cross-Linking of Sand Particles: Bio-polymers create a structural network, binding sand grains together into a soil-like matrix.
      • Water Retention: The cross-linked structure traps water, drastically reducing irrigation needs and preventing rapid percolation of water through sandy soil.
      • Microbial Boost: Introduced beneficial microbes stimulate plant growth, improve soil fertility, and enhance stress resistance of crops.
      • Soil-like Properties: The modified sand mimics fertile soil — enabling nutrient retention, microbial colonization, and sustainable cropping.

    Key Features:

    • Sand-to-Soil Conversion: Cross-links sand particles into a soil-like structure, creating porosity and root-holding capacity.
    • Water Retention Efficiency: Increases moisture-holding ability of sand, thereby reducing irrigation requirements by 30–40%.
    • Microbial Boost: Bioformulation stimulates beneficial soil microbes, enhancing nutrient cycling and crop stress resistance.
    • Crop Versatility: Tested successfully with wheat, bajra, guar gum, chickpea, and is now being expanded to millets and green gram.
    • Low Input Agriculture: Reduces number of irrigation cycles (3–4 vs 5–6 in normal wheat farming).
    • Climate Resilience: Provides a sustainable model for food production in water-stressed and desertified regions.
    • Scalability: Can be replicated in other arid ecosystems beyond Rajasthan (potential use in Middle East, Africa).
    [UPSC 2023] Which one of the following best describes the concept of ‘Small Farmer Large Field’?

    (a) Resettling war-displaced people on shared cultivable land

    (b) Marginal farmers group to coordinate farm operations *

    (c) Marginal farmers lease land collectively to a corporate

    (d) A company funds and guides farmers to grow required crops

     

  • Corporate Average Fuel Efficiency (CAFE) Norms

    Why in the News?

    The Bureau of Energy Efficiency (BEE) under the Ministry of Power has issued draft CAFE-3 and CAFE-4 norms, applicable from April 2027 to March 2037.

    About Corporate Average Fuel Efficiency (CAFE) Norms:

    • What is it: Standards that mandate automakers to maintain a sales-weighted fleet average of fuel efficiency and CO₂ emissions across all passenger vehicles.
    • Origin:
      • First introduced in the United States in 1975 after the Arab Oil Embargo, aimed at lowering oil dependency.
      • In India, first notified in 2017 under the Energy Conservation Act, 2001, framed by the Bureau of Energy Efficiency (BEE), Ministry of Power.
    • Objective:
      • Reduce CO₂ emissions and oil imports, improve energy security.
      • Push adoption of EVs, hybrids, flex-fuels, and fuel-efficient technologies.
    • Applicability: Passenger vehicles (< 3,500 kg gross vehicle weight) across petrol, diesel, LPG, CNG, hybrid, and electric categories.
    • Phased Implementation in India:
      • CAFE I (2017–2022) → CO₂ emission limit of 130 g/km.
      • CAFE II (2022–2027) → stricter limit of 113 g/km.
      • CAFE III (Draft, 2027–2032) → 91.7 g/km CO₂ limit, aligned with WLTP (World Harmonised Light Vehicle Test Procedure).
      • CAFE IV (Draft, 2032–2037) → 70 g/km CO₂ limit (most stringent stage yet).
    • Recent Updates (Draft CAFE-3 & CAFE-4, Sept 2025):
      • Automakers allowed to form pools of up to 3 manufacturers.
      • Pooling treated as one fleet for compliance; pool manager bears penalty if limits breached.
      • A manufacturer can join only one pool per year but can switch in later years.
      • Special relief for small cars (under 4m, <909 kg, <1200 cc): eligible for up to 9 g/km CO₂ relief.
      • Incentives for flex-fuel vehicles (ethanol-petrol blends) and strong hybrids alongside EVs.
      • Aim: Balance decarbonisation with consumer affordability and revive the small car segment (which saw 71% sales decline in 6 years).
    • Compliance & Penalties:
      • Exceeding CO₂ limits: Regulatory fines under the Energy Conservation Act, 2001.
      • CAFE credits may be earned, traded, or carried forward to offset temporary lapses.
    • Green Impact:
      • Complements India’s Net Zero 2070 goals.
      • Encourages fuel-efficient models, biofuels, and EV adoption.

    How are CAFE Norms different from Bharat Stage (BS) Norms?

    CAFE Norms Bharat Stage (BS) Norms
    Full Form Corporate Average Fuel Efficiency Bharat Stage Emission Standards
    Primary Focus Fleet-wide fuel efficiency & CO₂ emissions Individual vehicle toxic exhaust pollutants (NOx, PM, CO, HC, SOx)
    Objective Reduce oil imports, improve energy efficiency, cut CO₂ Reduce air pollution & public health risks
    Regulating Authority BEE, Ministry of Power (Energy Conservation Act, 2001) MoEFCC & CPCB
    Scope Passenger vehicles (<3,500 kg GVW; petrol, diesel, LPG, CNG, hybrids, EVs) Mainly ICE vehicles; tailpipe pollutants from petrol & diesel
    Parameters Measured Fleet average CO₂ (g/km) Pollutants: NOx, CO, PM, HC, SOx
    Basis of Measurement Sales-weighted fleet average across all models Individual vehicle emissions tested
    Phases in India CAFE I (2017–22: 130 g/km) → CAFE II (2022–27: 113 g/km) → Draft CAFE III (2027–32: 91.7 g/km) → Draft CAFE IV (2032–37: 70 g/km) BS-I (2000) → BS-II (2005) → BS-III (2010) → BS-IV (2017) → BS-VI (2020; leapfrogged BS-V)
    Testing Standard Fuel efficiency & CO₂ per km (lab-tested, WLTP cycle for future) Pollutant emissions measured under regulated driving cycles
    Impact on Industry Forces OEMs to balance fleet mix (e.g., SUVs offset by EVs/hybrids) Forces OEMs to adopt clean fuel & emission-control tech (e.g., DPF, SCR)
    Penalties Heavy fines for fleet CO₂ non-compliance; penalties apply to pool manager in pooled fleets Non-compliant vehicles cannot be sold; penalties & recalls
    Global Parallel U.S. CAFE norms (1975) Euro emission standards

     

    [UPSC 2020] Which of the following are the reasons/factors for exposure to benzene pollution?

    1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Using varnished wooden furniture 5. Using products made of polyurethane

    Select the correct answer using the code given below:

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

     

  • [26th September 2025] The Hindu Op-ed: Eight North-Eastern states with International borders, 0.13% of exports

    PYQ Relevance

    [UPSC 2024] India has a long and troubled border with China and Pakistan, fraught with contentious issues. Examine the conflicting issues and security challenges along the border. Also give out the development being undertaken in these areas under the Border Area Development Programme (BADP) and Border Infrastructure and Management (BIM) Scheme.

    Linkage: This PYQ on BADP/BIM links with the article’s focus on the Northeast, where 5,400 km of borders yield only 0.13% exports. Both stress that borders must be treated as developmental, not just security, frontiers — a recurring UPSC theme.

    Mentor’s Comment

    India’s trade story is dominated by coastal powerhouses, while the Northeast, despite its 5,400 km of international borders and strategic location, contributes a meagre 0.13% of exports. The recent 25% U.S. tariff on Indian goods has exposed not just external vulnerabilities but also deep structural and spatial imbalances in India’s trade economy. This article dissects the marginalisation of the Northeast in India’s export architecture, the missed opportunities in border trade, and the urgent need to diversify resilience across regions.

    Introduction

    When the United States imposed an additional 25% tariff on imports from India in August 2025, New Delhi responded with restraint, continuing its familiar strategy of quiet diplomacy. But beneath this diplomatic choreography lies a deeper crisis: India’s export economy is dangerously centralised. While four States, Gujarat, Maharashtra, Tamil Nadu, and Karnataka, account for more than 70% of exports, the entire Northeast contributes only 0.13%, despite sharing long borders with multiple countries and lying at the crossroads of South and Southeast Asia. This exclusion is not incidental but structural, reflecting decades of neglect in infrastructure, policy, and representation.

    Why is this in the news?

    The U.S. tariff hike of 25% against India is significant not just for its external trade implications but for the internal fault lines it exposes. For the first time, the spotlight has shifted from India-U.S. friction to India’s own spatial imbalance in trade. Striking numbers illustrate the scale of the problem: Gujarat alone contributes 33% of exports, while eight northeastern States together contribute only 0.13%. This stark contrast shows that India negotiates global trade deals while leaving its eastern frontier out of the economic map. It highlights a major failure in policy design, where infrastructure and incentives remain clustered in a few industrial enclaves, leaving large swathes of the country economically orphaned.

    Why is India’s export economy so centralised?

    1. Export concentration: Gujarat, Maharashtra, Tamil Nadu, and Karnataka together account for over 70% of exports, with Gujarat alone contributing 33%.
    2. Policy alignment: Infrastructure, political continuity, and incentives have been systematically channelled to these States.
    3. Peripheral neglect: Uttar Pradesh, Bihar, and Madhya Pradesh together contribute barely 5%, showing how populous regions remain trade lightweights.

    Why does the Northeast remain marginalised in trade?

    1. Minuscule share: Eight northeastern States, despite 5,400 km of international borders, contribute only 0.13% of exports.
    2. Security apparatus over trade: Borders are securitised for counterinsurgency, not for commerce. Goods do not move, but surveillance forces do.
    3. Policy exclusion: No representation from the Northeast in the PM’s Economic Advisory Council or the Board of Trade.
    4. Ignored in planning: The DGFT’s 2024 export strategy ran into 87 pages without a single mention of Northeast corridors.

    What are the ground-level impacts of neglect?

    1. Tea economy in crisis: Assam produces over half of India’s tea output, but branding and packaging are almost absent. A 25% tariff hike threatens viability, with planters in Dibrugarh warning of job losses.
    2. Oil vulnerability: Numaligarh Refinery’s expansion requires imports, increasingly relying on discounted Russian crude. U.S. sanctions risk choking supplies, with Golaghat bearing the brunt, not Mumbai.

    How has border trade with Myanmar collapsed?

    1. Vanishing corridors: Zokhawthar (Mizoram) and Moreh (Manipur) have withered into skeletal outposts.
    2. Free Movement Regime scrapped (2024): Severed kinship ties, daily trade, and hill economies.
    3. Performative infrastructure: Roads and customs offices exist on paper, cold-chain facilities are missing.
    4. Security logic over market demand: Borders function more as containment grids than trade hubs.

    How does global context deepen India’s challenge?

    1. China’s influence: Consolidating control in northern Myanmar through infrastructure investments and militia alliances.
    2. India’s inertia: The India-Myanmar-Thailand Highway remains unfinished, symbolic of missed opportunities.
    3. Global supply chains shifting: Southeast Asia builds new corridors, but India clings to colonial-era coastal routes.

    What does this reveal about India’s trade resilience?

    1. Dependence on few corridors: A flood in Gujarat or strike in Tamil Nadu can paralyse exports.
    2. Northeast excluded by design: Not just oversight, but structural neglect in infrastructure, logistics, and institutions.
    3. Strategic hollowness: India claims Indo-Pacific leadership but leaves its eastern flank brittle and disconnected.

    Conclusion

    India cannot aspire to regional leadership while its Northeast remains economically orphaned. The 25% U.S. tariffs are not just a foreign policy irritant but a reminder that trade resilience must mean dispersion, not dependence. The Northeast needs roads, warehouses, and representation, not rhetoric. Integrating this frontier into the export map is essential for both economic equity and strategic credibility. Without it, India risks negotiating global trade while ignoring the geographies that could anchor its cohesion.

  • Intermediate Range Agni-Prime Missile

    Why in the News?

    The Defence Research and Development Organisation (DRDO) and the Strategic Forces Command (SFC) successfully test-fired the Agni-Prime missile from a rail-based mobile launcher, marking India’s first such operational test.

    About Agni-Prime Missile:

    • About: 6th missile in the Agni family, developed under the Integrated Guided Missile Development Programme (IGMDP).
    • Design: Two-stage, solid-propellant, canisterised surface-to-surface ballistic missile.
    • Range and Payload: 1,000–2,000 km; covering both China and Pakistan; Payload: Up to 1.5 tonnes (1,500–3,000 kg).
    • Navigation: Dual redundant guidance system; Maneuverable Re-entry Vehicle (MaRV) with delta fins to evade missile defence systems.
    • Deployment: Already inducted in road-mobile canisterised version; now tested with rail-based mobile launcher.

    Global Context: Rail-Based Missile Technology:

    With Agni-P rail launch, joins this select strategic group.

    • Soviet Union: Operated RT-23 Molodets Intercontinental Ballistic Missile (ICBM) on rail; dismantled after START Treaty.
    • Russia: Planned Barguzin rail-mobile ICBM system, shelved to focus on hypersonics.
    • United States: Explored rail-mobile Minuteman and Peacekeeper ICBMs, cancelled post-Cold War.
    • China: Tested rail-mobile DF-41 ICBM in 2016.
    • North Korea: Tested rail-based Short-Range Ballistic Missile system in 2021.

    Significance of Rail-Based Launch:

    • Mobility & Concealment: Railcars move across the network, hide in tunnels, evade satellite detection.
    • Survivability: Unlike silos, less vulnerable to pre-emptive strikes.
    • Rapid Response: Enables quick deployment and shorter reaction time.
    • Strategic Deterrence: Boosts credible second-strike nuclear capability.
    • Technological Showcase: Demonstrates India’s maturity in missile systems.

    Back2Basics: Integrated Guided Missile Development Programme (IGMDP)

    • Launch: Conceived in 1983 by Dr. A.P.J. Abdul Kalam to achieve self-reliance in missile technology.
    • Completion: 2012.
    • Missile Family (P-A-T-N-A):
      • Prithvi – Short-range ballistic missile.
      • Agni – Ballistic missiles of multiple ranges (Agni I–V, Agni-P).
      • Trishul – Short-range surface-to-air missile.
      • Nag – 3rd generation anti-tank guided missile.
      • Akash – Medium-range surface-to-air missile.

    Agni Series and its Development:

    • Origins: Began in 1983 under the IGMDP led by Dr. Kalam.
    • Evolution: Started as technology demonstrators for re-entry vehicles; later developed into full-fledged strategic missiles.
    • Variants:
      • Agni-I: 700–1,200 km range, inducted 2007.
      • Agni-II: 2,000–3,000 km range, inducted 2010.
      • Agni-III: 3,500 km range, highly accurate, tested 2007.
      • Agni-IV: 4,000 km range, advanced avionics, tested 2011.
      • Agni-V: 5,000+ km range, ICBM, MIRV capable.
      • Agni Prime (Agni-P): 1,000–2,000 km, lighter, tested 2021.
      • Agni-VI: Under development, 6,000–10,000 km, MIRV + submarine launch capable.
    • Significance: Backbone of India’s nuclear triad, enhancing deterrence against regional and global adversaries.

     

    [UPSC 2023] Consider the following statements:

    1. Ballistic missiles are jet-propelled at subsonic speeds throughout their fights, while cruise missiles are rocket-powered only in the initial phase of flight.

    2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled intercontinental ballistic missile.

    Which of the statements given above is/are correct?

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

     

  • What is Uranium Enrichment?

    Why in the News?

    Iran’s supreme leader recently said Tehran has limited uranium enrichment to 60% U-235 and will not pursue further enrichment to ~90% (weapons grade).

    About Uranium Enrichment:

    • What is it: The process of increasing the proportion of U-235 isotope in uranium samples. Natural uranium has only 0.7% U-235, while the rest is mostly U-238.
    • Types of Enrichment:
      • Low-Enriched Uranium (3–5%): Used in civilian nuclear power reactors.
      • Highly Enriched Uranium (HEU, >20%): At 90%+ enrichment, uranium becomes weapons-grade, usable for efficient nuclear weapons.
    • Methods: Physical separation methods such as gas centrifuges, requiring advanced infrastructure and technology.
    • Implications:
      • Low enrichment: Controlled power generation.
      • High enrichment: Proliferation risks, shorter path to nuclear weapons capability.

    What is Uranium Enrichment?

    Controversy about Iran’s Pursuit:

    • Declared Program: Iran enriches uranium to 60% U-235, claiming peaceful purposes, but insists it will not pursue 90%+ enrichment.
    • Global Concerns:
      • Civilian irrelevance: 60% has no reactor use, only shortens the “breakout time” to weapons-grade.
      • IAEA Monitoring: International Atomic Energy Agency reports show significant 60% stockpiles, heightening suspicion.
    • Geopolitical Context:
      • Joint Comprehensive Plan of Action (2015) capped enrichment at 3.67% but collapsed after U.S. withdrawal in 2018.
      • Western governments see 60% enrichment as undermining trust, while Iran argues it is a deterrence and bargaining tool.
    • Strategic Dimension: Keeps Iran on the nuclear threshold, enabling leverage in negotiations and projecting deterrence without overt weaponisation.
    [UPSC 2023] Consider the following statements:

    Statement-I: India, despite having uranium deposits, depends on coal for most of its electricity production.

    Statement-II: Uranium, enriched to the extent of at least 60%, is required for the production of electricity.

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

    (a) Both Statement-I and Statement-II are correct and Statement-II 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-1

    (c) Statement-I is correct but Statement-II is incorrect *

    (d) Statement-I is incorrect but Statement-II is correct

     

  • Coffee Board to hold awareness program on EUDR compliance

    Why in the News?

    The Coffee Board of India has launched extensive awareness and capacity-building programmes to help coffee growers register on its mobile application for EU Deforestation Regulation (EUDR) compliance.

    What are EU Deforestation Regulation (EUDR)?

    • About: Effective from June 2023; Prevent imported products like coffee, cocoa, palm oil, soy, rubber, cattle, wood (and derivatives) from being linked to deforestation.

    • Requirements:

      • Proof of production on non-deforested land (post-2020).
      • Mandatory due diligence statement with geo-coordinates.
    • Penalties: Non-compliance may attract fines up to 4% of EU turnover, seizure of products, and temporary bans.

    About Coffee Board of India:

    • Establishment: In 1942 under the Coffee Act, Section 4; Functions under the Ministry of Commerce & Industry; Headquartered at Bengaluru, Karnataka.
    • Structure: A statutory organisation comprising 33 members, with the Chairperson/CEO appointed by the Government of India.
    • Focus areas: Research, Extension, Development, Market Intelligence, Export Promotion, Domestic Promotion.
    • Early years: Coffee marketing was under the pooling system until 1995, after which liberalisation shifted marketing to the private sector.
    • Initiatives: Runs promotional campaigns like India Coffee, Walk With Coffee, and awareness on EUDR compliance for exports.

    Back2Basics: Coffee Cultivation in India:

    • Overview: Coffee introduced in 1600 AD by Baba Budan in Chikmagalur, Karnataka.
    • Geographical Spread: Grown in the Western Ghats (Karnataka, Kerala, Tamil Nadu) and in smaller areas of Andhra Pradesh, Odisha, and Northeast India.
    • Production Share: Karnataka ~ 70%, Kerala ~ 20%, Tamil Nadu ~ 7%.
    • Agro-climatic Conditions: Requires 16°–28°C temperature, 150–250 cm rainfall, and well-drained slopes; sensitive to frost, dry spells, and harsh sunlight.
    • Soil: Grows best in laterite soils of Karnataka and rich, well-drained loams.

    • Varieties:

      • Arabica: Mild aromatic flavour, high export value, but more susceptible to pests/diseases.
      • Robusta: Hardy, disease-resistant, stronger taste, higher yields.
      • Liberica:  Rare, niche cultivation.
    • Seasonality: Coffee exports peak during March–June.
    • Domestic Consumption: Rising gradually; Coffee Board promoting events like International Coffee Day (October 1) to increase per capita intake.

    Production Statistics (2025-26):

    • India’s coffee production:  It is projected at a record 4.03 lakh tonnes in 2025 up 11% from last year’s 363,000 tonnes.
      • Arabica output forecast: 118,000 tonnes, up 12% year-on-year.
      • Robusta output forecast: 285,000 tonnes, up 9.5%.
    • Karnataka contributes ~70% of output, followed by Kerala and Tamil Nadu.
    • India is the world’s 7th largest producer and 5th largest exporter, contributing 3.5% of global production and 5% of global exports.
    • Exports: Reached $1.8 billion in 2024-25, a 125% growth over 11 years (from $800 million in 2014-15).
      • Around 70% of Indian coffee is exported, mainly to Europe (Italy, Germany, Belgium), the Middle East, Japan, and Korea.

     

    [UPSC 2022] With reference to the “Tea Board” in India, consider the following statements :

    1. The Tea Board is a statutory body.

    2. It is a regulatory body attached to the Ministry of Agriculture and Farmers Welfare.

    3. The Tea Board’s Head Office is situated in Bengaluru.

    4. The Board has overseas offices at Dubai and Moscow.

    Which of the statements given above are correct ?

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

     

  • New species of finless Snake Eel named after Kanniyakumari

    Why in the News?

    ICAR- National Bureau of Fish Genetic Resources (NBFGR) researchers in Kochi have discovered a new finless snake eel species, Apterichtus kanniyakumari, named after Kanniyakumari district.

    New species of finless Snake Eel named after Kanniyakumari

    About Finless Snake Eel (Apterichtus kanniyakumari):

    • Location: Discovered off the Colachel coast, Kanniyakumari (Tamil Nadu), at ~100 m depth during deep-sea trawling.
    • Etymology: Named kanniyakumari in honour of the district’s cultural, linguistic, historical, and geographical heritage.
    • Taxonomy: Belongs to the genus Apterichtus, family Ophichthidae, commonly known as finless snake eels.
    • Morphological traits: Golden-yellow body, pale white ventral head with yellow jaw lines, three black blotches (behind eyes, at rictus, behind rictus origin), conical uniserial teeth, 3 preopercular & 9 supratemporal pores.
    • Molecular confirmation: Mitochondrial CO1 gene analysis shows it as a distinct clade, closely related to Apterichtus nanjilnaduensis.
    • Significance: Marks the 16th new species described from the Indian coast by NBFGR; adds to India’s marine biodiversity records.
    [UPSC 2016] Recently, our scientists have discovered a new and distinct species of banana plant which attains a height of about 11 meters and has orange coloured fruit pulp. In which part of India has it been discovered?

    (a) Andaman Islands *

    (b) Anaimalai Forests

    (c) Maikala Hills

    (d) Tropical rain forests of northeast

     

  • [25th September 2025] The Hindu Op-ed: Follow the rains, not the calendar to fight floods

    PYQ Relevance

    [UPSC 2016] The frequency of urban floods due to high-intensity rainfall is increasing over the years. Discussing the reasons for urban floods, highlight the mechanisms for preparedness to reduce the risk during such events.

    Linkage: This PYQ is directly linked to the article as both focus on increasing urban floods due to high-intensity, untimely rainfall and the need for better preparedness. It is important for UPSC as it tests understanding of climate change impacts, urban governance, and disaster management, all of which the article highlights through outdated drainage design, rainfall compression, and the need to “follow the rains, not the calendar.

    Mentor’s Comment

    Urban floods are no longer seasonal accidents; they are recurring crises that expose the mismatch between traditional planning calendars and the realities of a changing climate. This article unpacks the failures of outdated urban flood management and suggests a roadmap for building resilient cities. Aspirants must note its direct relevance to GS 1 (urbanisation), GS 2 (governance), GS 3 (disaster management, environment), and GS 4 (ethics in governance).

    Introduction

    Every monsoon, India’s cities brace for floods with desilting of drains, deploying contractors, and activating emergency protocols. Yet, reality unfolds differently, roads submerge, homes flood, and transport grinds to a halt. The core problem lies not only in the intensity and unpredictability of rainfall but also in city systems designed for a climate that no longer exists. Urban resilience now demands shifting from “seasonal schedules” to real-time rainfall preparedness.

    Why in the News?

    This year, northern states like Punjab (all 23 districts), Delhi, and Gurugram witnessed severe floods in September, well beyond the traditional monsoon period. Uttarakhand and Himachal Pradesh saw frequent cloudbursts, while Kolkata faced torrential rains. Such untimely, intense, and regionally widespread flooding marks a sharp departure from past rainfall behaviour. With single floods now causing damages worth ₹8,700 crore, the urgency to rethink urban flood management cannot be overstated.

    Understanding Changing Rainfall Patterns

    1. Shift in Timing: Mumbai recorded 135.4 mm rainfall in May (normally a pre-monsoon month), followed by 161.9 mm the next day. Delhi saw 81 mm fall in a few hours, overwhelming drains.
    2. Rise in Frequency: CEEW analysis shows 64% of tehsils across states like Maharashtra, Tamil Nadu, Gujarat, and Karnataka have seen heavy rainfall days increase by 1–15 days.
    3. Compression of Rainfall: Rainfall that earlier spanned a day is now compressed into hours, intensifying floods.

    Why are Indian Cities Flooding so Frequently?

    1. Outdated Drainage Design: Systems still rely on seasonal averages rather than short-duration, high-intensity rain data.
    2. Unmanaged Waste: Plastic and debris block drains; even after desilting, poor waste collection leads to quick clogging.
    3. Poor Coordination: Storm water, sanitation, and municipal waste departments work in silos, creating gaps in preparedness.
    4. Static Planning: Drainage infrastructure often relies on rainfall data decades old, ignoring evolving IDF (Intensity-Duration-Frequency) curves.

    What Solutions are Proposed?

    1. Sub-daily Rainfall Analysis: Municipalities must adopt rainfall data in smaller time frames (1–3 hours) to plan drainage.
    2. Drainage-Waste Synchronisation: Waste collection and drain cleaning must be coordinated; rainfall alerts should trigger joint drives.
    3. Updating IDF Curves: Curves must be revised every 5–10 years; new drainage should factor in topography and micro-catchments.
    4. Infrastructure Upgradation: Example – BMC’s plan to widen drains to handle 120 mm/hour rainfall and prepare a new drainage master plan.
    5. Separate Sewerage and Stormwater Networks: To prevent overload and improve efficiency.

    Broader Implications for Urban Planning

    1. Disaster Management: Floods are now the leading cause of life and property loss among natural disasters in India.
    2. Economic Impact: Each major flood inflicts damages of nearly ₹8,700 crore.
    3. Climate Resilience: Cities must adapt to “rain already falling” instead of waiting for calendar-based monsoon onset.

    Conclusion

    India is not losing to rain, but to outdated assumptions about rain. The fight against urban floods requires breaking the illusion of a uniform monsoon season. By following the rain, not the calendar, cities can design adaptive infrastructure, improve inter-departmental coordination, and protect citizens’ lives and livelihoods.

    Value Addition

    Case Study: Vijayawada’s Monsoon Response Teams

    • Integrated approach: The city administration created special monsoon response teams that brought together officials from the sanitation, engineering, and planning departments to work in coordination during high-risk rainy periods.
    • Real-time action: Instead of relying on rigid seasonal schedules, these teams responded dynamically to rainfall alerts and forecasts, immediately conducting joint sanitation drives and drain inspections.
    • Drainage & waste sync: Garbage clearance and storm water drain cleaning were aligned, preventing freshly desilted drains from being blocked again by unmanaged waste.
    • Impact: This reduced waterlogging and urban flooding, improved road accessibility, and lessened health risks for residents during monsoons.
    • Learning: Vijayawada shows how inter-departmental coordination, proactive planning, and rainfall-triggered response systems can make cities more resilient to changing monsoon patterns.

    Global Context in Urban Flood Management

    Rotterdam, Netherlands – “Room for the River” approach

    • Idea: Instead of resisting water, the city creates water plazas that double as playgrounds during dry weather and hold excess rainwater during storms.
    • Infrastructure: Underground reservoirs, widened canals, and lowered floodplains to absorb water.
    • Learning: Shows the importance of adaptive urban design that accommodates rainfall variability.

    Copenhagen, Denmark – Cloudburst Management Plan

    • Trigger: After a massive cloudburst in 2011 caused $1 billion in damages.
    • Action: Developed over 300 projects including green roofs, permeable pavements, detention basins, and blue-green corridors that store and channel stormwater.
    • Learning: Proactive planning with a mix of nature-based and engineered solutions.

    New York City, USA – Green Infrastructure Plan

    • Focus: Reduce stormwater runoff that overwhelms combined sewer systems.
    • Measures: Rain gardens, bioswales, green roofs, permeable streets to capture rainfall locally.
    • Learning: Urban flooding is not just a drainage issue but requires land-use and design-based solutions.

    Singapore – ABC Waters Programme (Active, Beautiful, Clean)

    • Approach: Transforms canals, rivers, and drains into multifunctional spaces.
    • Measures: Retention ponds, vegetated swales, rain gardens integrated with urban landscapes.
    • Learning: Integrates aesthetics, ecology, and flood management, showing flood resilience can coexist with urban beauty.

    Tokyo, Japan – Underground Flood Tunnels (G-Cans Project)

    • Infrastructure: World’s largest underground floodwater diversion facility with 6.5 km tunnels and giant silos to store stormwater.
    • Impact: Protects Tokyo’s dense urban areas from typhoon rains and river overflow.
    • Learning: Mega-engineering projects can be effective in high-density megacities with extreme rainfall.

     

  • Swipe, Tap, Spend: How UPI is a decisive step towards formalization of Indian Economy

    Introduction

    India’s journey towards a cash-lite economy has been marked by a staggering rise in UPI transactions, reflecting a decisive shift in household and business payment patterns. From groceries to loans, from investments to utility bills, UPI has emerged as the backbone of everyday economic life. This transformation is not merely technological but a structural change towards the formalisation of the economy, reducing cash-dependency while boosting transparency and traceability in transactions.

    Why is UPI making news now?

    1. Staggering growth: In April–June 2025, 34.9 billion person-to-merchant transactions occurred through UPI, worth ₹20.4 lakh crore, equal to 40% of private final consumption expenditure, up from 24% two years ago.
    2. Shift from ATMs: Cash withdrawals, once dominant, have halved despite the economy doubling in size—falling from ₹2.6 lakh crore (2018) to ₹2.3 lakh crore (2025).
    3. Wider impact: UPI is now used not only for routine consumption but also for debt repayments, investments, and financial services, signalling a major step in economic formalisation.

    How has household spending been transformed?

    1. Digital dominance: Household payments, earlier cash-heavy, are increasingly routed through UPI across income classes.
    2. Food & beverages: In April–June 2025, households spent ₹3.4 lakh crore on food and beverages via UPI—17% of all UPI transactions and 21% of household expenditure.
    3. Non-food items: Payments include utilities, medicines, petrol, taxi rides, and electronics, accounting for two-thirds of person-to-merchant transfers.

    What about precautionary savings and cash usage?

    1. Decline in cash holdings: Household currency holdings fell from 12.5% of gross savings (2020–21) to just 3.4% in 2023–24.
    2. Changing behaviour: While cash remains important for land, gold, and election financing, its share in household savings has been on a consistent decline.

    How is UPI impacting financial formalisation?

    1. Formalisation of firms and workers: Increased traceable transactions complement reforms like GST registrations and EPFO contributions, enhancing formalisation.
    2. Beyond consumption: UPI in July 2025 facilitated ₹93,857 crore debt repayments and ₹61,080 crore investments into securities—indicating a structural integration of households into formal financial markets.

    What are the larger implications for the economy?

    1. Scaling up formal economy: Digital payments extend across small, medium, and big-ticket transactions, shrinking the space for the informal sector.
    2. Global context: Countries like Germany also have high cash usage despite digitisation—India’s transformation is striking in scale.
    3. Policy question: With the public currency-to-GDP ratio falling from 12.9% (2022) to 10.9% (2025), the debate is whether India has reached an inflection point towards becoming a sustained cash-lite economy.

    Conclusion

    UPI’s ascendancy reflects not just a technological success but a social and economic restructuring of India. By shifting transactions from cash to traceable platforms, it has enhanced formalisation, reduced leakages, and encouraged financial inclusion. The challenge ahead lies in ensuring this transformation is sustainable while safeguarding against risks like digital divides, cybersecurity threats, and over-dependence on electronic infrastructure.

    PYQ Relevance:

    [UPSC 2023] What is the status of digitalization in the Indian economy? Examine the problems faced in this regard and suggest improvements.

    Linkage: This PYQ is important as UPSC often tests themes of digitalisation, financial inclusion, and formalisation of the economy under GS3. The article helps answer it by showing UPI’s role in reducing cash reliance and formalising payments, while also pointing to persisting challenges like cash use in land, gold, and elections.

    Value Addition

    Benefits of UPI

    • Digitalisation of the Economy: 
      1. UPI has made India the world’s largest real-time digital payments ecosystem (over 50% of global real-time transactions, as per the ACI Worldwide 2023 report).
      2. Strengthens transparency, traceability, and reduces black money circulation.
    • Financial Inclusion:
      1. UPI transactions span urban malls to rural kirana stores, enabling low-cost access for the unbanked.
      2. Integration with Aadhaar, Jan Dhan, and mobile numbers creates a seamless financial ecosystem.
    • Globalisation × Formal & Informal Economy:
      1. Shifts large segments from cash-heavy informal sector to traceable, formal payments.
      2. Helps MSMEs and street vendors gain access to credit as digital history substitutes collateral.
    • Economic Growth and Development:
      1. Boosts consumption visibility, enabling better policy targeting.
      2. Encourages formal lending and investments—e.g., ₹93,857 crore in debt repayments via UPI (article data).

  • Delhi to witness Artificial Rain through Cloud Seeding

    Why in the News?

    The Delhi government is planning to trial cloud-seeding to trigger artificial rain to combat air pollution ahead of winters.

    About Cloud Seeding:

    • About: It is a microclimate management technique aimed at altering precipitation patterns by dispersing substances into clouds to stimulate rainfall or snowfall.
    • Why it is used: It is used to mitigate hail, disperse fog, and either induce precipitation or prevent it from occurring in subsequent days.
    • Techniques include:
      • Static Cloud Seeding: Chemicals are introduced into cold clouds already containing supercooled water droplets, encouraging the formation of ice crystals.
      • Hygroscopic Cloud Seeding: Salts are sprayed into the base of warm clouds to act as condensation nuclei, increasing the number and size of water droplets.
      • Dynamic Cloud Seeding: This method involves boosting vertical air currents to enhance moisture passage through the clouds, leading to more rain.
    • Common Cloud Seeding Chemicals:
      • Silver iodide (AgI): Preferred for its ice-like crystalline properties.
      • Potassium iodide (KI): Functions similarly to silver iodide.
      • Dry ice (solid CO₂): Used to rapidly cool cloud droplets, aiding rain formation.
      • Liquid propane: Used in specific cloud types, effective at higher temperatures.
      • Sodium chloride and calcium chloride: Used in hygroscopic (warm) cloud seeding methods.
      • Bismuth tri-iodide (BiI₃): Sometimes used based on experimental or environmental considerations.
    • Dispersion methods range from aircraft and ground-based generators to newer approaches like drones delivering electric charges or infrared laser pulses.

    Limitations: 

    • Concerns persist regarding the potential accumulation of seeding agents in sensitive ecosystems, although detailed studies have shown negligible impacts.
    • The chemicals used, such as silver iodide, may potentially damage the environment and cause health issues like iodine poisoning in high concentrations
    [UPSC 2025] Artificial way of causing rainfall to reduce air pollution makes use of:

    (a) silver iodide and potassium iodide *

    (b) silver nitrate and potassium iodide

    (c) silver iodide and potassium nitrate

    (d) silver nitrate and potassium chloride