October 31, 2026Daily Current Affairs Digest
Glacial Lake Outburst Floods & Transboundary Disaster Mitigation (October 2026)
Why in News / Context: In October 2026, a sudden Glacial Lake Outburst Flood (GLOF) at Sintaphu Lake in Bhutan triggered downstream flash-flood alerts along the Mo Chhu and Sankosh river systems in West Bengal and Assam.
Key Details:
- Natural Triggers: Glacier retreat, ice/rock avalanches, permafrost thawing above 4,500 m, heavy cloudbursts (100+ mm/hour), and seismic shocks along the Main Himalayan Thrust.
- Anthropogenic Factors: Unregulated construction, rapid urbanisation, and increasing tourist activities in high-altitude fragile ecosystems.
- Downstream Vulnerability: Transit times range between 6 to 8 hours; damages civil infrastructure, hydropower projects, and riverbed ecology.
- NDMA 5-Point Strategy: Hazard assessment via space technology (SAR interferometry, bathymetric surveys), AWWS installation, Early Warning Systems (EWS), structural engineering interventions (siphoning/pumping), and community involvement.
"With reference to Glacial Lake Outburst Floods (GLOFs) in the Himalayan region, consider the following statements: 1. A GLOF at Sintaphu Lake in Bhutan impacts downstream river systems in West Bengal and Assam. 2. Permafrost thawing above 4,500 m destabilises rock slopes and moraine dams. Which of the statements given above is/are correct?"
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Ethanol Blending Targets and Biofuel Generations (October 2026)
Why in News / Context: In October 2026, national reports highlighted that India achieved its 20% ethanol blending target (E20) under the National Policy on Biofuels ahead of the 2030 deadline.
Core Facts:
- Biofuel Feedstock Generations: 1G (edible food crops like sugarcane, wheat), 2G (non-edible agricultural waste/lignocellulosic biomass), 3G (algae and non-vascular plants), and 4G (genetically engineered organisms).
- Macro-Economic Gains: Substituted 245 lakh metric tonnes of crude oil, saved ₹1.44 lakh crore in foreign exchange, and reduced 736 lakh metric tonnes of CO₂ emissions.
- Systemic Challenges: High water footprint (3,000 litres of water per litre of ethanol), maize imports (nearly 1 million tonnes in 2024), and fuel economy drop in legacy vehicles (66% of pre-2023 vehicle owners report >10% mileage loss).
- Key Policy Schemes: PRADHAN MANTRI JI-VAN Yojana (VGF for 2G plants), GOBARDHAN Scheme (Compressed Bio-Gas), and FSSAI's RUCO (Used Cooking Oil channelised for biodiesel).
"Which generation of biofuels relies specifically on genetically engineered microorganisms for efficient energy production?"
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World Bank Poverty & Equity Brief on India (October 2026)
Why in News / Context: In October 2026, the World Bank released its Poverty & Equity Brief for India, recording historic poverty reductions alongside structural income inequalities.
Publishing Body: World Bank.
Core Findings / India's Rank:
- Extreme Poverty Line ($3.00/day): Declined sharply from 27.1% in 2011 to 2.6% in 2023.
- Lower-Middle-Income Poverty ($4.20/day): Dropped from 57.7% to 16.1%, lifting 49.6 crore (496 million) people above the threshold.
- Multidimensional Poverty Index (MPI): Non-monetary MPI fell from 53.8% (2005–06) to 16.4% (2019–21).
- Wage Disparity & Gini Index: Gini index score stood at 23.0 in 2023; median earnings of the top 10% workers were 13 times higher than the bottom 10%.
- Geographic Concentration: 57% of India's poor population resides in a continuous belt stretching from Uttar Pradesh to West Bengal.
"According to the World Bank Poverty & Equity Brief published in October 2026, what was India's extreme poverty rate ($3.00/day benchmark) in 2023?"
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ISRO NVS-03 Navigation Satellite Launch (October 2026)
Why in News / Context: On October 30, 2026, ISRO successfully launched the 2,250 kg NVS-03 navigation satellite aboard GSLV-F18 into Geosynchronous Transfer Orbit (GTO) from Sriharikota.
Key Details:
- Constellation Augmentation: 3rd satellite in the second-generation NVS fleet designed to ensure operational continuity for NavIC (IRNSS) over a 12-year mission life.
- Atomic Clock: Features an indigenously developed space-grade Rubidium atomic clock alongside imported atomic clocks.
- Interoperable Civilian Band: Introduces the civilian L1 frequency band (1575.42 MHz) for direct compatibility with consumer mobile devices, complementing legacy L5 and S bands.
- Dual-Tier Service Architecture: Delivers open Standard Positioning Service (SPS) for civilian applications and encrypted Restricted Service (RS) for strategic defense agencies.
"Which civilian signal band was introduced in ISRO's second-generation NVS-03 satellite launched in October 2026 to ensure direct compatibility with commercial smartphone chipsets?"
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Chola Era Bronze Nataraja Sculpture and History (October 2026)
Why in News / Context: In October 2026, coaching digests featured an in-depth art and culture focus on the Chola bronze Nataraja sculpture and imperial Chola history.
Core Facts:
- Casting Technique: Manufactured in bronze using the ancient Lost-Wax technique (Cire Perdue); literary reference appears in Patanjali's Mahabhasya; earliest relief sculpture is at Ravana Pahadi Cave, Aihole (Badami Chalukyas).
- Iconographic Details: Damaru (creation), Agni (destruction), Abhaya Mudra (protection), Apasmara-Purusha dwarf (ignorance), and raised left foot (salvation).
- Raja Raja Chola I (985–1014 CE): Built the Brihadeshwara Temple at Thanjavur and permitted the Sailendra king to construct a Buddhist monastery at Nagapattinam.
- Rajendra Chola I (1014–1044 CE): Founded Gangaikondacholapuram and conducted a successful naval expedition in 1025 CE against Srivijaya King Sangrama Vijayatunga Varman.
"Which ancient metal casting technique was utilized by Chola artisans to create the bronze Nataraja sculpture?"
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Buxa Tiger Reserve Ecological & Transboundary Corridor (October 2026)
Why in News / Context: In October 2026, Buxa Tiger Reserve was highlighted for its strategic ecological significance as an international transboundary wildlife corridor.
Key Details:
- Geographical Location: Situated in Alipurduar district, West Bengal, in the eastern Himalayan foothills.
- Establishment: Declared a Tiger Reserve in 1983; features a core Critical Tiger Habitat and surrounding buffer zone.
- Transboundary Connectivity: Functions as an international elephant migration corridor linking India with Bhutan's Phipsu Wildlife Sanctuary.
- Key Biodiversity: Supports Bengal tiger, Asian elephant, clouded leopard, gaur, fishing cat, Bengal florican, and great hornbill.
"Buxa Tiger Reserve in West Bengal serves as a crucial transboundary wildlife corridor connecting India to which protected area in Bhutan?"
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National Social Security Board for Gig & Unorganised Workers (October 2026)
Why in News / Context: On October 31, 2026, the Union Ministry of Labour & Employment notified the constitution of National Social Security Boards under Section 6 of the Code on Social Security, 2020.
Definition: Statutory apex advisory and monitoring boards constituted under Section 6 of the Code on Social Security, 2020, to formulate, oversee, and review social safety frameworks for informal, gig, and platform workers.
Significance:
- Board Composition: National Social Security Board for Unorganised Workers (40 members); Board for Gig & Platform Workers (22 members).
- Chairperson: Union Minister for Labour and Employment serves as ex-officio chairman of both boards.
- Mandatory Meetings: Required to meet at least thrice a year.
- Core Functions: Recommending targeted welfare schemes (health, disability, pension), evaluating e-Shram registration linkages, and monitoring Social Security Fund expenditures.
"Who serves as the ex-officio Chairman of the National Social Security Boards constituted under the Code on Social Security, 2020?"
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Surangam Underground Water Harvesting System of Kerala (October 2026)
Why in News / Context: In October 2026, eight Grama Panchayats in Kasaragod district, Kerala, initiated community restoration of traditional Surangam underground water tunnels for drought resilience.
Core Objectives:
- Zero-Energy Extraction: Harvest naturally seeping groundwater through horizontal tunnels excavated into laterite hills, operating purely on gravity flow without pumps or electricity.
- Seasonal Water Resilience: Store infiltrating monsoon rainwater in laterite strata to supply drinking water during dry summer months.
- Indigenous Conservation: Provide a low-cost, eco-friendly traditional water management model for climate adaptation.
Target Beneficiaries: Rural communities in laterite-dominated topographies of Kerala facing seasonal groundwater scarcity.
"The traditional Surangam water harvesting system of Kerala relies on which geological feature to collect groundwater through horizontal tunnels?"
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Dr. Homi Jehangir Bhabha Scientific Legacy (October 2026)
Why in News / Context: On October 30, 2026, India observed the 117th birth anniversary of Dr. Homi Jehangir Bhabha, architect of India's nuclear energy program.
Key Details:
- Theoretical Physics: Formulated Bhabha Scattering (relativistic electron-positron scattering), Cascade Theory of Cosmic Ray Showers (1937 with Walter Heitler), and meson decay confirming special relativity time dilation.
- Three-Stage Nuclear Power Programme: Designed Stage 1 (PHWR using natural uranium), Stage 2 (FBR using plutonium), and Stage 3 (AHWR harnessing domestic Thorium reserves).
- Institutions Built: Founded TIFR (1945), AEET/BARC (1954), and served as first Chairman of the Atomic Energy Commission (AEC) in 1948.
- Apsara Reactor: Commissioned Asia's first research reactor, Apsara, in August 1956 at Trombay.
"Which domestic nuclear fuel reserve forms the foundation of Stage 3 in Dr. Homi Jehangir Bhabha's Three-Stage Nuclear Power Programme?"
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European Central Bank Mandate and Structure (October 2026)
Why in News / Context: In October 2026, European Central Bank (ECB) President Christine Lagarde announced her early resignation, bringing Eurozone monetary governance into focus.
Definition: The central bank of the 20 European Union member states that use the euro currency, headquartered in Frankfurt am Main, Germany.
Significance:
- Institutional Evolution: Established in 1998 under the Treaty of Amsterdam; became an official EU institution under the Lisbon Treaty (2009); gained direct banking supervisory authority under the Single Supervisory Mechanism (SSM, 2014).
- Primary Mandate: Maintain price stability with a symmetric 2% inflation target over the medium term.
- Core Functions: Exclusive legal right to authorize euro banknote issuance, formulation of Eurozone monetary policy, management of foreign exchange reserves, and systemic banking supervision.
"What is the primary medium-term inflation target mandated for the European Central Bank (ECB) across the Eurozone?"
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Sardar Vallabhbhai Patel 151st Birth Anniversary (October 2026)
Why in News / Context: On October 31, 2026, India celebrated the 151st birth anniversary of Sardar Vallabhbhai Patel as Rashtriya Ekta Diwas (National Unity Day).
Key Details:
- Peasant Movements: Spearheaded Kheda Satyagraha (1918), Nagpur Flag Satyagraha (1923), and Bardoli Satyagraha (1928) (where women titled him 'Sardar').
- INC Leadership: Presided over the historic 1931 Karachi Congress Session, adopting resolutions on Fundamental Rights and the National Economic Programme.
- State Integration: Consolidated over 560 princely states into the Indian Union via diplomatic statecraft, Instruments of Accession, and decisive actions (Operation Polo in Hyderabad, Junagadh).
- All India Services: Championed the retention of civil services as the constitutional 'steel frame' under Article 312, establishing the IAS and IPS.
"During which session of the Indian National Congress presided over by Sardar Vallabhbhai Patel were resolutions on Fundamental Rights and the National Economic Programme adopted?"
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Geography and Oil Reserves of Venezuela (October 2026)
Why in News / Context: In October 2026, Venezuela featured in international geopolitical and energy mapping discussions.
Key Details:
- Energy Assets: Possesses the world's largest proven crude oil reserves, concentrated in the Orinoco Oil Belt and Lake Maracaibo Basin.
- Key Physical Features: Home to Angel Falls (979 m, world's highest uninterrupted waterfall) and ancient sandstone plateaus (tepuis) in the Guiana Highlands.
- Casiquiare Canal: A rare natural river distributary connecting the Orinoco River basin directly with the Amazon River basin via the Rio Negro.
- Llanos Savannas: Extensive tropical grasslands between the Andes and Orinoco experiencing seasonal flooding.
"The Casiquiare Canal in Venezuela is a unique natural river distributary that connects which two major river basins?"
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