Every news story that matters for the Science & Technology part of UPSC Civil Services GS3 (Economy · S&T · Environment · Security), written for the exam: why in news, background, prelims facts, a practice MCQ and a mains question. 1,480 notes so far, updated daily.
Syllabus topics covered: IT, AI, semiconductors & computing (539) · Space technology (ISRO, missions) (353) · Biotechnology & health research (252) · Nuclear & new energy technology (212) · Defence technology (120) · Intellectual property rights (4)
Why in news: ISRO announced the ISRO Robotics Challenge - URSC (IRoC-U 2026) to invite student teams to develop autonomous navigation systems for future space missions, including Martian surface exploration.
The challenge focuses on developing autonomous navigation techniques without relying on external aids like GPS or reflectors. Participants must build micro-UAVs and base stations capable of autonomous navigation, landing, data transfer, and recharging.
Prelims pointers (3)
S&TIRoC-U 2026: ISRO Robotics Challenge focused on autonomous navigation for planetary exploration
FactRegistration deadline for the ISRO Robotics Challenge is January 12, 2026
S&TThe challenge specifically targets the development of autonomous aerial swarms for space missions
Mains angle
Q. Discuss the significance of developing autonomous navigation systems for planetary exploration and how such initiatives can foster a robust space-tech ecosystem in India.
Technological sovereignty: Reducing dependence on external GPS signals for deep-space and planetary navigation
Human capital development: Bridging the gap between academic research and practical aerospace engineering applications
Keywords: Autonomous Navigation · Space Exploration · UAV Swarms · Deep Space Missions · Technological Sovereignty
Why in news: Convergence Energy Services Limited (CESL) concluded India's largest electric bus tender for 10,900 buses under the PM E-DRIVE Scheme to reduce CO2 emissions.
CESL, a subsidiary of Energy Efficiency Services Limited (EESL), secured a tender for 10,900 electric buses. The initiative aims to reduce over 4 million tonnes of CO2 emissions across five major cities, with Andhra Pradesh receiving 750 e-buses.
Prelims pointers (5)
BodyCESL: A subsidiary of Energy Efficiency Services Limited (EESL)
SchemePM E-DRIVE Scheme: Government initiative for electric bus procurement
FactTotal e-buses in tender: 10,900
FactAndhra Pradesh allocation: 750 e-buses (including 150 for Visakhapatnam)
FactProjected CO2 reduction: Over 4 million tonnes
Mains angle
Q. Discuss how the transition to electric public transport under schemes like PM E-DRIVE contributes to India's climate goals and urban air quality management.
Infrastructure bottleneck: Requirement for high-density charging stations and grid stability in urban centers
Emission mitigation: Quantifiable reduction in carbon footprint and particulate matter in metropolitan hubs
Fiscal strategy: Leveraging public-private partnerships to scale EV manufacturing and deployment
Keywords: Decarbonization · Public Transport Electrification · PM E-DRIVE Scheme · Emission Mitigation · Sustainable Urban Mobility
Why in news: The Karnataka government completed a drone-powered GIS survey of state lakes to identify encroachments and create a centralized database for conservation.
The survey identified 41,225 out of 41,849 lakes in Karnataka with an accuracy of 5 centimeters. Bengaluru Urban and Rural districts were identified as the worst performers, with over 80% of their lakes affected by encroachment.
Prelims pointers (3)
FactKarnataka lake survey accuracy: 5 centimeters.
PlaceBengaluru Urban and Rural districts: Identified with over 80% lake encroachment.
BodyDepartment of Survey Settlement and Land Records: Body responsible for the Karnataka lake survey.
Mains angle
Q. Discuss how Geographic Information Systems (GIS) and drone technology can enhance urban lake conservation and land record management in India.
Data integrity: Challenges in reconciling drone-captured spatial data with existing manual land records
Urban planning: Conflict between rapid infrastructure expansion and the preservation of blue-green corridors
Enforcement gap: Difficulty in penalizing encroachments despite high-accuracy spatial mapping
Keywords: Geographic Information System · Spatial Data · Urban Ecology · Land Records · Encroachment
Why in news: Researchers at NITK developed SVALSA, an integrated landslide early warning framework using machine learning to address limitations in existing systems in the Western Ghats.
The SVALSA framework combines rainfall analysis, real-time soil behavior monitoring, and machine learning to provide reliable warnings. It is designed for hill roads, highways, railway cuttings, and settlements on steep slopes in the Western Ghats.
Prelims pointers (3)
S&TSVALSA: An integrated landslide early warning framework developed by NITK.
FactSVALSA operates through a three-stage warning mechanism: rainfall data analysis, soil stability assessment, and surface movement monitoring.
PlaceThe framework is specifically designed for the Western Ghats region.
Mains angle
Q. Discuss how the integration of machine learning and real-time monitoring can enhance disaster risk reduction in ecologically sensitive zones like the Western Ghats.
Data accuracy: Reducing false alarms through multi-stage analysis of rainfall and soil behavior
Infrastructure resilience: Protecting critical corridors like railway cuttings and hill roads from landslide-induced damage
Keywords: Machine Learning · Disaster Risk Reduction · Early Warning System · Geotechnical Monitoring · Western Ghats
Why in news: FSSAI is replacing the mandatory BIS certification for packaged drinking water in Tamil Nadu with a stricter testing framework effective January 1st.
The Food Safety and Standards Authority of India (FSSAI) is introducing a new testing scheme for packaged drinking water and mineral water. The move replaces the previous mandatory Bureau of Indian Standards (BIS) certification in Tamil Nadu.
Prelims pointers (4)
BodyFSSAI: Food Safety and Standards Authority of India
BodyBIS: Bureau of Indian Standards
FactNew testing framework for packaged drinking water becomes effective on January 1st
PlaceTamil Nadu: State where the mandatory BIS certification is being replaced
Mains angle
Q. Discuss the trade-offs between stringent food safety standards and the operational viability of small-scale manufacturing units in India.
Compliance burden: Increased operational costs for manufacturers due to more frequent and rigorous testing requirements
Monitoring gap: Potential lack of sufficient accredited testing laboratories to ensure consistent quality oversight
Regulatory shift: Transition from certification-based oversight to testing-based compliance frameworks
Keywords: Regulatory compliance · Public health safety · Operational costs · Quality assurance · Standardization
Why in news: The Kerala General Education department's KITE initiative is hosting camps for 14,804 students to develop weather models using programming and robotic kits.
KITE is the technology arm of the General Education department in Kerala. The initiative involves students creating weather models and digital content using animation software like OpenToonz.
Prelims pointers (4)
BodyKITE: The technology arm of the General Education department in Kerala
Fact14,804 students are participating in the Little KITEs camps to develop weather models
S&TOpenToonz: Animation software used by students for creating digital content
FactAdvanced robotic kits are scheduled to be available in all schools starting January 2026
Mains angle
Q. Discuss how integrating robotics and programming into school curricula can enhance scientific literacy and foster innovation among students in India.
Pedagogical shift: Moving from rote learning to project-based learning using robotics
Infrastructure gap: Disparity in access to high-end robotic kits across rural and urban schools
Keywords: STEM education · Digital literacy · Project-based learning · Robotics in education · Skill development
Why in news: The Indian government passed the SHANTI Act, 2025, to allow private companies to participate in the nuclear sector while granting blanket RTI exemptions for nuclear-related information.
The SHANTI Act, 2025 replaces two existing laws to provide a single license for private entities to build, operate, or decommission nuclear power plants and fabricate nuclear fuel. The Act includes provisions for private participation but faces criticism over transparency and environmental risks like groundwater contamination.
Prelims pointers (3)
Act / BillSHANTI Act, 2025: Enables private sector participation in India's nuclear power sector.
FactThe Act provides a single license for building, operating, decommissioning plants, and fabricating nuclear fuel.
FactThe Act grants blanket exemptions from the Right to Information (RTI) for nuclear facility information.
Mains angle
Q. Discuss the trade-offs between promoting private investment in the nuclear energy sector and ensuring public transparency and environmental safety in India.
Transparency-Security Paradox: Balancing public's right to information against national security concerns in nuclear infrastructure.
Environmental Liability: Risks of radioactive groundwater contamination and the technical complexities of decommissioning private-sector plants.
Regulatory Oversight: Ensuring private entities adhere to stringent safety protocols without the direct oversight of state-run bodies.
Keywords: Nuclear Governance · Public-Private Partnership · Right to Information · Environmental Impact Assessment · Nuclear Decommissioning
Why in news: The Ministry of Environment approved the 260-megawatt Dulhasti Stage-II hydropower project on the Chenab River in Jammu and Kashmir despite the suspension of the Indus Waters Treaty with Pakistan.
The project is an extension of the existing Dulhasti Stage-I Hydro Electric Project. It is designed to generate 260 MW of energy annually and allows for the floating of construction tenders.
BodyMinistry of Environment: Body responsible for approving the project
Mains angle
Q. Discuss the challenges of balancing large-scale hydroelectric development with ecological preservation and transboundary water diplomacy in the Himalayan region.
Transboundary friction: Impact of unilateral project approvals on the Indus Waters Treaty framework
Ecological risk: Potential impact of large-scale hydro projects on Himalayan riverine biodiversity
Energy security: Balancing regional power demands with environmental sustainability goals
Keywords: Hydroelectric power · Transboundary water · Indus Waters Treaty · Renewable energy · Environmental clearance
Why in news: The Delhi High Court directed the Centre to submit an affidavit on a plea to reduce GST on air purifiers by classifying them as medical devices to combat worsening air quality.
The petition filed by advocate Kapil Madan seeks to reclassify air purifiers as medical devices. The current GST rate on air purifiers is 18%, and the court has directed the GST Council to meet to consider a reduction or abolition of this tax.
Prelims pointers (3)
FactCurrent GST rate on air purifiers: 18%
BodyGST Council: The body responsible for making decisions on Goods and Services Tax rates in India
PlaceDelhi High Court: The judicial body overseeing the petition regarding air purifier taxation
Mains angle
Q. Discuss the intersection of public health and fiscal policy in addressing urban air pollution in India. Can tax incentives effectively mitigate environmental health hazards?
Fiscal policy trade-offs: Balancing revenue loss from tax cuts against public health benefits of air purification
Regulatory classification: Challenges in defining 'medical devices' for non-clinical environmental protection tools
Keywords: Fiscal Federalism · Public Health Policy · Environmental Mitigation · Taxation Reform
Why in news: The Council on Energy, Environment and Water (CEEW) highlighted the growing challenge of managing solar panel waste as India expands its renewable energy capacity.
India is projected to generate over 11 million tonnes of solar waste by 2047. While solar panels are mostly recyclable, the country currently lacks dedicated recycling facilities and sufficient investment to manage the waste volume.
Prelims pointers (3)
FactCEEW estimates India could generate over 11 million tonnes of solar waste by 2047
S&TSolar panels are described as mostly recyclable materials
BodyCouncil on Energy, Environment and Water (CEEW) is the body providing the waste estimates
Mains angle
Q. Discuss the environmental and logistical challenges posed by solar waste management in India's transition to renewable energy. Suggest a framework for a circular economy in the solar sector.
Infrastructure gap: Lack of dedicated recycling facilities to handle the projected 11 million tonnes of waste by 2047
Circular economy bottleneck: High investment requirements for recycling technologies to prevent environmental degradation
Policy-implementation gap: Need for robust waste management systems to align with clean energy goals
Why in news: A study by the Raman Research Institute suggests that matter in the intergalactic medium (IGM) may interfere with measurements of the diffuse envelope surrounding galaxies.
The Raman Research Institute study indicates that the intergalactic medium (IGM) contributes to the mass of the halo around galaxies. The Department of Science and Technology noted that these measurements are essential for understanding galaxy formation processes.
Prelims pointers (3)
S&TRaman Research Institute: Research body involved in the study on galactic halo mass measurements.
FactIntergalactic Medium (IGM): The medium whose matter contributions may affect measurements of the diffuse envelope surrounding a galaxy.
PostDepartment of Science and Technology: The Indian government body overseeing the findings' implications for galaxy formation.
Mains angle
Q. Discuss how advancements in astrophysical measurements of galactic halos contribute to our understanding of galaxy formation and the evolution of the intergalactic medium.
Measurement accuracy: Distinguishing between diffuse galactic envelopes and intergalactic medium (IGM) matter contributions.
Evolutionary modeling: Impact of halo mass precision on simulating large-scale structure formation in the universe.
Keywords: Galactic Halo · Intergalactic Medium · Galaxy Formation · Astrophysics · Mass Measurement
Why in news: ISRO successfully launched the BlueBird-6 satellite for the U.S.-based company AST SpaceMobile using the LVM3 rocket, highlighting India's role as a global launch service provider.
The mission involved the launch of the BlueBird-6 satellite, developed by AST SpaceMobile. The launch was executed by the Indian Space Research Organisation (ISRO) using the LVM3 rocket.
Prelims pointers (4)
S&TLVM3: A heavy-lift launch vehicle used by ISRO for satellite deployment.
FactBlueBird-6: A satellite developed by the U.S. company AST SpaceMobile.
PostAmb Kwatra: Official who highlighted the success of the space mission and India's 'Atmanirbharta' capabilities.
S&TNISAR and Axiom-4: Notable space missions completed in 2025 as part of India-U.S. cooperation.
Mains angle
Q. Discuss how India's growing capabilities in space technology and launch services contribute to its strategic autonomy and position in the global space economy.
Supply chain resilience: Strengthening domestic manufacturing of space components to reduce import reliance
Geopolitical leverage: Leveraging 'Atmanirbharta' to position India as a trusted global launch hub
Commercial viability: Balancing public-sector space exploration with private-sector commercial launch services
Why in news: Navi Mumbai International Airport (NMIA) commenced commercial flight operations on December 25, 2025, marking a milestone in India's civil aviation infrastructure.
The airport was inaugurated by Prime Minister Narendra Modi in October and is being developed under a Public-Private Partnership (PPP) model. It will initially connect to nine domestic destinations with a 12-hour daily operation window.
Prelims pointers (4)
FactNMIA aims to handle 90 million passengers annually upon completion of all five phases.
FactThe airport's initial phase includes scheduled departures for 12 hours daily.
FactThe first commercial flights were operated by IndiGo from Bengaluru and to Hyderabad.
FactThe project is being developed under a Public-Private Partnership (PPP) model.
Mains angle
Q. Discuss how the Public-Private Partnership (PPP) model in infrastructure development can enhance India's aviation capabilities while addressing logistical bottlenecks.
Fiscal efficiency: Leveraging private capital to reduce the burden on public exchequer for large-scale aviation projects
Operational scalability: Balancing initial phase connectivity with long-term capacity targets of 90 million passengers
Why in news: Conservationists are proposing a new playbook using bio-acoustics and thermal drones to monitor stress levels and population health of the endangered western hoolock gibbon.
The western hoolock gibbon is India's only non-human ape species. Its population has plummeted from an estimated 100,000 to less than 5,000 over the last half century due to habitat loss and deforestation.
Prelims pointers (3)
EnvironmentWestern hoolock gibbon: The only non-human ape species found in India.
S&TBio-acoustics and thermal drones: Technologies being used to identify gibbons and assess stress levels.
FactPopulation decline: Reduced from 100,000 to less than 5,000 over the last half century.
Mains angle
Q. Discuss the role of technological interventions and community-led conservation in mitigating the impact of anthropogenic pressures on India's endangered primate species.
Genetic bottleneck: Risk of inbreeding-induced population decline due to habitat fragmentation
Technological monitoring: Use of bio-acoustics and thermal imaging for non-invasive stress assessment
Anthropogenic pressure: Conflict between settled agriculture expansion and forest biodiversity
Why in news: Indian Railways commissioned rooftop solar plants at 148 stations in the South Western Railway (SWR) zone to support the national net-zero carbon emissions goal by 2030.
The South Western Railway (SWR) zone has commissioned solar plants at 148 stations, including service buildings, workshops, and level crossing gates. The cumulative installed solar capacity in the SWR zone has reached 7,491.6 kWp.
Prelims pointers (3)
FactSWR zone cumulative installed solar capacity: 7,491.6 kWp
FactNumber of stations with rooftop solar in SWR: 148
FactNational target: Net-zero carbon emissions by 2030
Mains angle
Q. Discuss the role of decentralized renewable energy systems in achieving India's net-zero carbon emission targets by 2030.
Operational efficiency: Reduction in electricity procurement costs for railway infrastructure
Decentralized model: Utilizing existing railway land and rooftops to minimize land acquisition hurdles
Keywords: Net-zero emissions · Renewable energy · Decentralized power · Sustainable infrastructure · Carbon footprint
Why in news: Vice President C.P. Radhakrishnan launched a report at the ‘National Conclave on AI Evolution’ advocating for the integration of AI into school curricula and India's pursuit of global leadership.
The report highlights India's current third-place ranking in AI and emphasizes the need to reach first place. It mentions the India AI Mission, which provides researchers with access to 38,000 graphics processing units (GPUs).
Prelims pointers (3)
FactIndia currently holds a third-place ranking in AI.
FactThe India AI Mission provides researchers with access to 38,000 graphics processing units (GPUs).
PostC.P. Radhakrishnan is the Vice President of India.
Mains angle
Q. Discuss the implications of integrating Artificial Intelligence into the school curriculum and the challenges in ensuring responsible AI development in India.
Pedagogical shift: Balancing automated learning tools with the development of critical thinking and human-centric skills.
Infrastructure gap: Ensuring equitable access to high-compute resources like GPUs across diverse socio-economic educational settings.
Ethical governance: Establishing regulatory frameworks to mitigate algorithmic bias and ensure data privacy in student environments.
Keywords: Responsible AI · Digital Literacy · India AI Mission · Pedagogical Integration · Technological Sovereignty
Why in news: The Supreme Court ordered an underwater inspection of the Mullaperiyar dam using a Remotely Operated Vehicle (RoV) to assess its structural integrity following reports of mortar erosion.
The Central Soil and Materials Research Station, Delhi, is conducting the inspection in 100-meter segments (further divided into 50-meter intervals). The study was prompted by Kerala government findings showing erosion of lime-surki mortar and cement mix exposing stones at a depth of 110 feet.
Prelims pointers (3)
S&TRoV: Remotely Operated Vehicle used for underwater structural inspections
BodyCentral Soil and Materials Research Station: Based in Delhi
FactErosion depth: Stones exposed at a depth of 110 feet
Mains angle
Q. Discuss the role of advanced underwater technologies in ensuring the safety of aging hydroelectric and irrigation infrastructure in India.
Technical bottleneck: Limitations of manual underwater inspections in high-pressure dam environments
Safety-Development trade-off: Balancing the structural risks of aging dams with regional water security needs
Institutional coordination: Inter-state cooperation and judicial oversight in managing shared water resources
Why in news: Chief Minister N. Chandrababu Naidu directed that all new APSRTC electric buses, including Palle Velugu, must be air-conditioned to enhance passenger comfort and sustainable mobility.
The Andhra Pradesh government aims to replace 8,819 diesel buses with electric and CNG variants over five years. The state plans to operate exclusively electric and CNG buses by 2030 to reduce pollution and operating costs.
Prelims pointers (4)
SchemePM e-Bus Sewa: A central government scheme supporting the conversion of diesel buses to CNG and the deployment of electric buses.
FactAPSRTC target: Replacement of 8,819 diesel buses over a five-year period.
Fact2030 Goal: Andhra Pradesh aims to operate only electric and CNG buses by 2030.
BodyAPSRTC: Andhra Pradesh State Road Transport Corporation.
Mains angle
Q. Discuss the role of public transport electrification in achieving sustainable mobility and reducing the carbon footprint of urban and rural transport in India.
Operational viability: Balancing high upfront capital costs of EVs with long-term reductions in fuel and maintenance expenses
Infrastructure gap: Requirement for high-density charging networks and grid stability to support large-scale electric bus fleets
Keywords: Sustainable mobility · Decarbonization · Public transport electrification · Operational costs · Green transition
Why in news: The demand for AI and Large Language Models (LLMs) is driving the adoption of advanced liquid cooling technologies to manage the high energy and water consumption of data center chips.
Iceotope, a liquid cooling firm, claims its technology can reduce energy and water consumption by up to 80% compared to traditional air cooling. Microsoft has explored subsea data center projects but currently focuses on liquid cooling research.
Prelims pointers (3)
S&TLiquid cooling: A technology used in data centers to reduce energy and water consumption by up to 80% compared to air cooling.
FactLarge Language Models (LLMs) are identified as significant drivers of high energy consumption in data centers.
S&TSubsea data centers: An alternative cooling approach involving underwater installations.
Mains angle
Q. Discuss how the rapid expansion of Artificial Intelligence infrastructure poses challenges to India's energy efficiency and water conservation goals.
Resource intensity: High water and electricity demand of LLM training vs national sustainability targets
Infrastructure bottleneck: Need for specialized liquid cooling systems to sustain high-speed chip performance
Technological trade-offs: Economic viability of subsea installations versus terrestrial liquid cooling solutions
Keywords: Large Language Models · Liquid Cooling · Energy Efficiency · Data Infrastructure · Sustainable AI
Why in news: The Delhi government and Directorate of Education implemented work-from-home and hybrid learning to combat severe air pollution, while the Supreme Court reinforced the right to a healthy environment under Article 21.
The Commission for Air Quality Management (CAQM) amended the Graded Response Action Plan (GRAP) to mandate school closures in Delhi and NCR during severe pollution phases. The Environment (Protection) Act, 1986, defines 'environment' to include water, air, and land.
Prelims pointers (5)
PlaceDelhi and NCR districts are subject to the Graded Response Action Plan (GRAP) for air quality management.
FactPM2.5 is identified as a major contributor to stroke, heart disease, and lung problems.
Act / BillThe Environment (Protection) Act, 1986, provides a broad definition of 'environment' including air, water, and land.
ConstitutionThe Supreme Court recognizes the right to a clean and healthy environment as part of Article 21.
BodyThe Commission for Air Quality Management (CAQM) is the body responsible for amending GRAP.
Mains angle
Q. Examine the adequacy of current legislative frameworks and administrative measures in protecting the fundamental right to a healthy environment against escalating air pollution.
Institutional bottleneck: Coordination gaps between Delhi government and NCR districts in enforcing GRAP mandates
Legal framework: Transition from judicial recognition under Article 21 to explicit constitutional protections
Public trust doctrine: State's obligation to manage air quality as a shared public resource
Keywords: Article 21 · Public Trust Doctrine · Graded Response Action Plan · PM2.5 · Environmental Governance
Why in news: India Optel Limited (IOL) signed a collaboration agreement with France’s Safran Electronics & Defence to manufacture high-precision navigation and firing systems in India.
India Optel Limited (IOL) is a Mini Navratna defense PSU. The agreement covers the production of the SIGMA 30N Digital Ring Laser Gyro Inertial Navigation System and the CM3-MR Direct Firing Sight.
Prelims pointers (4)
BodyIndia Optel Limited (IOL) is a Mini Navratna defense public sector undertaking
FactThe agreement covers the SIGMA 30N Digital Ring Laser Gyro Inertial Navigation System
FactThe agreement covers the CM3-MR Direct Firing Sight
PostSanjeev Kumar serves as the Secretary (Defence Production) in the Government of India
Mains angle
Q. Discuss how public-private partnerships and international collaborations can accelerate India's goal of achieving self-reliance in critical defense technologies.
Technology transfer: Balancing indigenous R&D with reliance on foreign high-precision components
Strategic autonomy: Reducing import dependency for land-based weapon systems through local manufacturing
Industrial growth: Leveraging Mini Navratna status to foster high-tech defense manufacturing clusters
Why in news: The Indian Navy received the third indigenous Anti-Submarine Warfare Shallow Water Craft (ASW SWC) named 'Anjadip' from Garden Reach Shipbuilders and Engineers (GRSE).
The Anjadip is a 77-meter vessel equipped with advanced weaponry and sonar for coastal surveillance and anti-submarine warfare. It is the 115th warship built by GRSE and part of a Public-Private Partnership between GRSE and L&T Shipyard.
Prelims pointers (5)
PostAnjadip: The third of eight ASW SWC vessels received by the Indian Navy.
FactAnjadip: A 77-meter vessel equipped with advanced weaponry and sonar.
BodyGRSE: Garden Reach Shipbuilders and Engineers, located in Chennai.
PlaceAnjadip Island: Located off the coast of Karnataka.
FactAnjadip is the 115th warship built by GRSE.
Mains angle
Q. Discuss how the promotion of indigenous shipbuilding through Public-Private Partnerships contributes to India's 'Atmanirbhar Bharat' goals in the defense sector.
Industrial synergy: Leveraging Public-Private Partnerships to scale domestic shipbuilding capacity
Strategic autonomy: Reducing import reliance for specialized coastal surveillance and ASW assets
Technological sovereignty: Development of indigenous sonar and advanced weaponry systems
Why in news: A research team's analysis of polling station-level data in Tamil Nadu revealed anomalies in the deletion of electors, specifically highlighting disproportionate deletions of women and unusual death proportions.
The analysis identified 172 polling stations where women comprised at least 75% of deletions due to permanent shifts. It also flagged 8,613 polling stations with abnormally high deletion rates and 14 stations showing unusually high proportions of young deaths.
Prelims pointers (3)
Fact172 polling stations in Tamil Nadu had women comprising at least 75% of deletions due to permanent shifts.
Fact8,613 polling stations were identified as having abnormally high deletion rates.
Fact495 polling stations reported all deletions as being attributed to deaths.
Mains angle
Q. Discuss the importance of data integrity and transparency in electoral roll management to ensure the sanctity of the democratic process in India.
Data integrity: Risks of systematic exclusion of specific demographics like women from electoral rolls
Audit mechanisms: Need for independent verification of death-based deletions to prevent fraudulent entries
Technological oversight: Leveraging real-time data analytics to identify and rectify anomalies in voter registration
Why in news: Bengaluru-based Sarla Aviation successfully completed ground testing of its SYL-X1, a half-scale electric vertical take-off and landing (eVTOL) demonstrator.
Sarla Aviation is developing a six-seater electric flying taxi designed for congested Indian cities. The company raised $13 million in funding to develop the SYL-X1 demonstrator to global standards.
Prelims pointers (3)
S&TeVTOL: Electric Vertical Take-off and Landing aircraft capable of operating without runways.
FactSarla Aviation's SYL-X1 is a half-scale demonstrator of an electric flying taxi.
FactThe company aims to develop a six-seater electric flying taxi for urban use.
Mains angle
Q. Discuss the potential of eVTOL technology in revolutionizing urban mobility and addressing infrastructure bottlenecks in India's rapidly growing metropolitan areas.
Regulatory vacuum: Lack of specific aviation framework for low-altitude urban air mobility
Infrastructure gap: Requirement for vertiports and specialized charging grids in dense urban zones
Safety-security trade-off: Balancing rapid deployment of autonomous flight with stringent aviation safety protocols
Keywords: Urban Air Mobility · eVTOL · Sustainable Transport · Smart Infrastructure · Aviation Technology
Why in news: The Indian Air Force used an MI-17 helicopter to airlift a tranquilized tigress (PN-224) from Pench Tiger Reserve in Madhya Pradesh to Rajasthan.
The three-year-old tigress, identified as PN-224, was relocated from Pench Tiger Reserve to Ramgarh Vishdhari Tiger Reserve. The operation involved experts from both Madhya Pradesh and Rajasthan and utilized an IAF MI-17 helicopter.
Prelims pointers (2)
EnvironmentPN-224: A three-year-old tigress relocated from Pench Tiger Reserve
FactMI-17: The specific helicopter model used by the Indian Air Force for the airlift
Mains angle
Q. Discuss the importance of tiger translocation programs in maintaining genetic diversity and ecological balance across fragmented tiger habitats in India.
Genetic bottleneck: Risk of inbreeding in isolated tiger populations without periodic translocation
Habitat connectivity: Challenges of managing tiger corridors across state boundaries
Logistical complexity: High-risk operational requirements for tranquilizing and transporting apex predators
Why in news: President Droupadi Murmu granted assent to the SHANTI Bill, which repeals existing civil nuclear laws to allow private participation in the nuclear power sector.
The SHANTI Bill (Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India) allows private entities to build, own, operate, and decommission nuclear power plants. It mandates that government-owned entities remain responsible for uranium mining, enrichment, and waste management.
Prelims pointers (3)
Act / BillSHANTI Bill: Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India
FactPrivate participation permitted in: building, owning, operating, and decommissioning nuclear power plants
FactGovernment-owned entities to handle: uranium mining, enrichment, and waste management
Mains angle
Q. Discuss the implications of opening the civil nuclear sector to private participation on India's energy security and regulatory framework.
Regulatory oversight: Balancing private operational autonomy with stringent safety protocols and nuclear security standards
Resource monopoly: Centralized government control over uranium mining and waste management to mitigate environmental risks
Why in news: Researchers at JNCASR identified the exocyst protein complex as a key regulator in autophagy, offering a potential pathway for treating neurodegenerative diseases and cancer.
The study conducted by the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) utilized yeast cells to observe the formation of autophagosomes. The research highlights the exocyst's role in the cellular 'self-eating' process known as autophagy.
Prelims pointers (3)
S&TExocyst: A protein complex identified as a crucial regulator in the autophagy process.
S&TAutophagy: A cellular 'self-eating' process involved in the formation of autophagosomes.
BodyJNCASR: Jawaharlal Nehru Centre for Advanced Scientific Research.
Mains angle
Q. Discuss how advancements in understanding cellular autophagy mechanisms can revolutionize the treatment of neurodegenerative diseases and oncology.
Mechanistic breakthrough: Identifying exocyst protein complex as a target for regulating cellular waste clearance.
Translational potential: Transitioning from yeast cell models to therapeutic interventions for Alzheimer's and Parkinson's.
Why in news: The Madras High Court directed the Tamil Nadu forest department to conduct DNA testing and documentation before destroying seized ivory stocks following allegations of inaccurate theft reports.
The court mandated the documentation of weight, height, and circumference of ivory before destruction. A committee including local body representatives, Revenue department officials, and a wildlife expert must oversee the process.
Prelims pointers (3)
BodyMadras High Court: Judicial body in Tamil Nadu
FactDNA testing: Required for ivory samples before destruction
FactCommittee composition: Local bodies, Revenue department, and wildlife expert
Mains angle
Q. Discuss the importance of forensic evidence and transparent oversight in combating illegal wildlife trade and ensuring accountability in forest department operations.
Forensic integrity: Use of DNA profiling to verify provenance and prevent illegal ivory laundering
Institutional oversight: Balancing executive forest management with multi-stakeholder committee transparency
Data accuracy: Addressing discrepancies in reported theft volumes to ensure reliable wildlife crime statistics
Why in news: The Food Safety and Standards Authority of India (FSSAI) refuted claims linking eggs to cancer risk, clarifying that nitrofurans are prohibited in Indian poultry and egg production.
The FSSAI stated that trace amounts of nitrofurans detected in some eggs do not pose health risks. The agency clarified that such findings are not indicative of widespread contamination in the supply chain.
Prelims pointers (3)
BodyFSSAI: The primary regulatory body for food safety and standards in India
FactNitrofurans: A substance potentially linked to cancer that is prohibited in Indian poultry and egg production
FactFSSAI's stance: Trace amounts of prohibited substances do not constitute a health risk for human consumption
Mains angle
Q. Discuss the role of regulatory bodies like FSSAI in ensuring food safety and managing public health risks arising from chemical contaminants in the food supply chain.
Regulatory oversight: Ensuring compliance with prohibited substance lists in the poultry and egg supply chain
Public communication: Managing misinformation regarding food safety and chemical residues in consumer products
Keywords: Food Safety · Regulatory Compliance · Public Health · Nitrofurans · Risk Assessment
Why in news: ISRO announced the launch of a 6,500 kg BlueBird communications satellite developed by the U.S.-based AST SpaceMobile as part of the LVM3-M6 mission.
The satellite is scheduled for launch on December 24, 2025, at 8:54 am IST from the Second Launch Pad of the Satish Dhawan Space Centre in Sriharikota. The mission utilizes the LVM3-M6 launch vehicle.
Prelims pointers (3)
S&TLVM3-M6: The launch vehicle designated for the BlueBird satellite mission.
FactBlueBird satellite: A 6,500 kg communications satellite developed by AST SpaceMobile.
S&TSecond Launch Pad: The specific facility at Satish Dhawan Space Centre for the December 24 launch.
Mains angle
Q. Discuss the significance of India's growing role as a global hub for commercial space launches and its impact on the global space economy.
Commercial synergy: Leveraging LVM3 heavy-lift capacity to host international commercial payloads
Strategic positioning: Enhancing India's role in the global satellite communications infrastructure
Technical reliability: Managing complex multi-payload missions for international space agencies
Keywords: Space Economy · Commercial Spaceflight · LVM3 · Satellite Communications · Space Diplomacy
Why in news: IIT-M, Google, and Digital Futures Lab are launching a capacity-building program to train government officials on responsible AI development, procurement, and scaling.
The initiative involves a collaboration between IIT-Madras, Google, and Digital Futures Lab. It focuses on foundational AI technologies, risk assessment, and governance requirements for real-world deployments.
Prelims pointers (2)
S&TThe program covers responsible AI system development, procurement, and scaling
S&TDigital Futures Lab is a collaborator in the AI training initiative
Mains angle
Q. Discuss the importance of establishing a robust governance framework for the deployment of Artificial Intelligence in public service delivery in India.
Governance gap: Lack of standardized protocols for ethical AI procurement and risk assessment in public procurement
Skill deficit: Need for specialized technical literacy among civil servants to oversee automated decision-making systems
Keywords: Responsible AI · Capacity building · Digital governance · Risk mitigation · Public administration
Why in news: The Supreme Court ruled that corporations have a fundamental duty to protect the environment and prevent species extinction, interpreting Corporate Social Responsibility (CSR) to include environmental conservation.
The Supreme Court directed companies operating near Great Indian Bustard (GIB) habitats in Rajasthan and Gujarat to bear the costs of species recovery. The court upheld recommendations for revised priority areas and long-term studies on climate change impacts on the GIB.
Prelims pointers (3)
EnvironmentGreat Indian Bustard (GIB): An endangered bird species identified as a priority for conservation in Rajasthan and Gujarat.
FactThe Supreme Court interpreted Corporate Social Responsibility (CSR) to explicitly include environmental responsibility.
PlaceRajasthan and Gujarat: States identified as key habitats for the Great Indian Bustard.
Mains angle
Q. Discuss the legal and ethical implications of expanding Corporate Social Responsibility (CSR) to include mandatory environmental conservation and species protection.
Legal interpretation: Expanding CSR mandates from voluntary philanthropy to mandatory ecological restoration obligations
Economic trade-off: Balancing industrial operational costs with the financial burden of biodiversity conservation
Regulatory oversight: Need for standardized metrics to monitor corporate-led species recovery efforts
Keywords: Corporate Social Responsibility · Biodiversity Conservation · Environmental Jurisprudence · Species Recovery · Ecological Duty
Why in news: Indian researchers discovered that manipulating macrophage metabolism using the drug meclizine could make tuberculosis (TB) bacteria more susceptible to antibiotics.
The study identified that Mtb bacteria use oxidative phosphorylation (OXPHOS) or glycolysis depending on oxidative stress levels. The regulatory molecule NRF2 was found to support drug-tolerant niches for Mtb. Meclizine, an over-the-counter nausea drug, was found to shift macrophages toward glycolysis to improve treatment efficacy.
Prelims pointers (4)
S&TMacrophages: Immune cells that fight tuberculosis (TB) and whose metabolism can be manipulated for therapy.
FactNRF2: A regulatory molecule identified by Indian researchers that boosts antioxidant responses and supports drug-tolerant niches for Mtb.
S&TMeclizine: An over-the-counter drug used for nausea that can shift macrophage metabolism toward glycolysis to increase Mtb susceptibility.
S&TOXPHOS vs Glycolysis: Metabolic pathways used by Mtb bacteria within macrophages depending on oxidative stress levels.
Mains angle
Q. Discuss the potential of host-directed therapies in addressing the growing challenge of multi-drug resistant tuberculosis in India.
Metabolic reprogramming: Shifting macrophage pathways to eliminate bacterial drug-tolerant niches
Combination therapy: Integrating over-the-counter drugs with standard antibiotics to reduce treatment duration
Resistance mitigation: Reducing the selection pressure for antibiotic-resistant strains through host-cell manipulation
Why in news: Google, OpenAI, and Perplexity are offering free AI services in India to capture the market and gather multilingual training data, leading to India becoming the largest market for daily users of ChatGPT and Gemini.
Google launched Gemini AI Pro and OpenAI launched ChatGPT Go as free versions to attract Indian users. India has emerged as the largest market globally for daily users of both ChatGPT and Gemini services.
Prelims pointers (4)
S&TGemini AI Pro: A free AI service launched by Google to capture the Indian market.
S&TChatGPT Go: A free version of OpenAI's chatbot launched for Indian users.
FactIndia is currently the largest market by daily users for both ChatGPT and Gemini.
S&TPerplexity: An AI service offering free services in India to gather multilingual training data.
Mains angle
Q. Discuss the implications of large-scale AI data harvesting on individual privacy and the importance of establishing a robust data protection framework in India.
Privacy-Utility Trade-off: Balancing the benefits of free AI services against the risks of unauthorized data harvesting.
Data Sovereignty: Challenges in regulating the flow of Indian user data to global AI corporations.
Digital Divide: Risk of unequal access to advanced AI tools despite the availability of free versions.
Keywords: Data Privacy · Artificial Intelligence · Data Harvesting · Digital Sovereignty · Multilingual Training Data
Why in news: Researchers at Ashoka University used the BharatSim model to simulate H5N1 bird flu transmission to humans, highlighting the necessity of early intervention and specific culling strategies.
Researchers Philip Cherian and Gautam Menon utilized a computer simulation model named BharatSim to study H5N1 outbreaks. The study found that isolating infected individuals and quarantining households can contain the virus at the secondary stage.
Prelims pointers (3)
S&TBharatSim: A computer simulation model used by Indian researchers to study H5N1 bird flu spread.
FactH5N1: A subtype of the influenza A virus commonly known as bird flu.
S&TTargeted vaccination: Identified as a method to raise the threshold at which the virus can sustain itself in humans.
Mains angle
Q. Discuss the importance of predictive modeling and early intervention strategies in managing zoonotic diseases like H5N1 in India.
Data-driven policy: Utilizing simulation models like BharatSim to identify critical intervention windows
Zoonotic risk management: Balancing bird culling efficacy with public health quarantine measures
Why in news: The Lok Sabha passed the SHANTI Bill, 2025, which seeks to amend the Civil Liability for Nuclear Damage Act, 2010 by removing the recourse clause for nuclear plant operators against suppliers.
The SHANTI Bill, 2025, removes a clause from the Civil Liability for Nuclear Damage Act, 2010 that allowed operators to claim recourse from suppliers during accidents. The bill proposes a liability cap of ₹3,000 crore, which was questioned by opposition members in light of the Fukushima disaster costs.
Prelims pointers (4)
Act / BillCivil Liability for Nuclear Damage Act, 2010: Existing law governing nuclear accident liability.
FactLiability cap: The SHANTI Bill, 2025, proposes a liability cap of ₹3,000 crore.
PostJitendra Singh: Served as the Science Minister during the passage of the SHANTI Bill.
BodyLok Sabha: The lower house of Parliament passed the bill before sending it to the Rajya Sabha.
Mains angle
Q. Discuss the trade-offs between capping nuclear liability and attracting foreign investment in India's nuclear energy sector.
Investment barrier: Low liability caps may deter foreign investors due to high risk of nuclear accidents.
Regulatory evolution: Need to align liability frameworks with modern reactor technologies and safety standards.
Fiscal risk: Balancing the financial burden on operators versus the state's responsibility for large-scale disasters.
Keywords: Nuclear Liability · Foreign Direct Investment · Risk Mitigation · Regulatory Framework · Energy Security
Why in news: Union Railway Minister Ashwini Vaishnaw informed the Lok Sabha that the indigenous Kavach anti-collision system has been commissioned on over 2,000 km of the rail network.
Kavach is an Automatic Train Protection (ATP) system involving optical fiber cables and telecom towers. Indian Railways has trained approximately 40,000 technicians and operators to operate the system.
Prelims pointers (4)
S&TKavach: An indigenous Automatic Train Protection (ATP) system for Indian Railways.
FactKavach has been commissioned on over 2,000 km of the rail network.
FactTraining completed for approximately 40,000 technicians and operators for Kavach.
FactKavach has contributed to a nearly 90% reduction in consequential rail accidents since 2014.
Mains angle
Q. Discuss how the integration of indigenous safety technologies like Kavach addresses the structural challenges of railway safety and modernization in India.
Technological sovereignty: Reducing reliance on foreign safety systems through indigenous ATP development
Operational safety: Mitigating human error in rail signaling through automated collision prevention
Infrastructure synergy: Integrating telecom towers and optical fiber with traditional rail networks
Why in news: Kerala is planning to develop a model electric truck corridor along National Highway 66 under the PM E-DRIVE scheme to reduce carbon emissions from heavy-duty freight.
The Kerala State Electricity Board (KSEB) and the International Council on Clean Transportation (ICTT) are collaborating to establish high-capacity charging infrastructure. The initiative targets medium and heavy-duty trucks, which are identified as significant contributors to fuel consumption and greenhouse gas emissions.
Prelims pointers (4)
SchemePM E-DRIVE: A central government scheme aimed at promoting electric vehicle adoption and infrastructure.
BodyKSEB: Kerala State Electricity Board, the state's primary power utility.
PlaceNational Highway 66: The primary corridor selected for the electric truck model in Kerala.
FactThe project focuses on medium and heavy-duty trucks due to their high contribution to greenhouse gas emissions.
Mains angle
Q. Discuss the logistical and infrastructural challenges in transitioning heavy-duty freight transport to electric mobility in India's coastal corridors.
Grid stability: Managing high-capacity peak loads from heavy-duty truck charging stations on coastal highways
Infrastructure gap: Requirement for specialized high-capacity charging stations compared to standard passenger vehicle points
Policy synergy: Aligning state-led transport corridors with central PM E-DRIVE scheme objectives
Keywords: Decarbonization · Freight Electrification · Green Logistics · Infrastructure Development · PM E-DRIVE