{GS1 – Geo} 3D Imaging of the Popocatépetl Volcano
- Context (TH): Scientists from Mexico’s University have produced the first-ever high-resolution 3D image of the interior of Popocatépetl, one of the world’s most active volcanoes in Mexico.
- Data was collected over five years, overcoming harsh weather, equipment damage, and eruption risks.
Achievements by the Scientists
- 3D Internal Mapping: Researchers mapped the volcano’s interior down to 18 km below the crater, revealing multiple magma reservoirs instead of a single magma chamber.
- Magma Distribution: The image shows several magma pools at different depths, especially concentrated toward the southeast side of the volcano.
- Shift in Volcanology Models: The discovery challenges the classical single-chamber model, pushing volcanology toward more realistic, data-driven representations of magma plumbing systems.
Method of Study
- Dense Seismic Network: Seismographs around Popocatépetl were increased from 12 to 22, enabling full perimeter coverage and finer resolution.
- High-Frequency Data: Instruments recorded ground vibrations 100 times per second, capturing subtle underground movements.
- AI-Based Analysis: Artificial intelligence classified different seismic tremors and inferred material type, temperature, depth, and state inside the volcano.
Significance of the Breakthrough
- Improved Eruption Forecasting: By identifying the precise depth and location of multiple magma reservoirs, scientists can better interpret seismic signals, improving early-warning systems.
- Enhanced Disaster Preparedness: With nearly 25 million people living within a 100-km radius, detailed 3D imaging enables authorities to design more targeted evacuation plans and risk zoning.
- Global Scientific Benchmark: This study establishes a new methodological standard by integrating dense seismic networks with AI, which can be replicated for monitoring high-risk volcanoes worldwide.
Interior of Volcano
- Magma Chamber: Subsurface reservoir where molten magma accumulates before eruption.
- Conduit: A passage through which magma rises from the magma chamber toward the surface.
- Vent: An opening on the Earth’s surface through which magma, gases, ash, and lava are expelled.
- Fractures: Cracks in the Earth’s crust that allow magma and volcanic gases to move and spread.
- Gas Pockets: Zones where volcanic gases accumulate within magma, increasing explosivity.
Intrusive Volcanic Landforms
- Intrusive landforms are products of volcanic interiors, formed when magma fails to erupt.
Major Features
- Batholith: Large intrusive igneous mass formed by slow cooling of magma deep in the crust.
- Laccolith: Dome-shaped intrusion formed when magma uplifts overlying rock layers.
- Lopolith: A saucer-shaped intrusive body formed when magma cools in a concave structure.
- Phacolith: Lens-shaped intrusion formed along anticlines or synclines in folded rocks.
- Sill: Horizontal intrusive sheet formed between existing rock layers.
- Dyke: Vertical or steep intrusion formed when magma fills crustal fractures.
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{GS2 – IR} Institutional Collaborations between India and the United States
- Context (TH): Despite political tensions and trade disagreements, India-United States institutional collaboration continues to advance steadily through formal bilateral frameworks.
India-U.S. Institutional Collaborations
- Defence Framework: The 2025-2035 U.S.-India Major Defence Partnership Framework creates the legal foundation for a decade-long collaboration in military interoperability and logistics.
- Strategic Technology: The TRUST Framework upgraded the iCET to promote joint development of semiconductors and AI, supporting resilient global supply chains.
- Defence Production: The INDUS-X initiative supports collaborative industrial production, including the manufacturing of the GE F414 jet engine and autonomous systems.
- Space Exploration: ISRO and NASA collaborate on joint missions like the NISAR satellite and incorporate Indian astronauts into ISS research protocols.
- Clean Energy: The Strategic Clean Energy Partnership (SCEP) manages over $1 billion in multilateral financing for solar, wind, and green-hydrogen projects.
- Higher Education: The India-US Global Challenges Institute network connects the Association of American Universities (AAU) with IITs for climate and public health research.4
- Global Health: The Bilateral Vaccine Action Program (VAP) and Cancer Dialogue form a permanent research framework for affordable genomic therapeutics research.
- Multilateral Alignment: India and the U.S coordinate maritime security and infrastructure investment through the Quad and I2U2 groupings.
- Trade Mission: Mission 500, launched in 2025, targets more than double bilateral trade to $500 billion by 2030 through targeted reduction in sector-specific barriers.
- Maritime Domain Awareness: The Seavision platform has integrated the Information Fusion Centre–Indian Ocean Region (IFC-IOR) into U.S. naval networks to monitor Indo-Pacific waters.
- Cultural Protection: A bilateral Cultural Property Agreement provides a legal mechanism to prevent illicit trafficking and to repatriate Indian antiquities from the U.S.
Read More> India-US Relations
{GS2 – IR} OPEC+ Keeps Oil Production Unchanged to Stabilise Global Oil Markets
- Context (DDN): OPEC+ will keep oil production steady through the first quarter of 2026, halting earlier plans for increases to support market stability.
About OPEC +
- Oil-Producers’ Alliance: OPEC+ is an oil producers’ alliance formed in late 2016 between OPEC and ten non-OPEC countries.
- Membership: The alliance currently consists of 22 members, with 12 OPEC and 10 non-OPEC producers.
- Non-OPEC Members: Russia, Azerbaijan, Bahrain, Brunei, Kazakhstan, Malaysia, Mexico, Oman, South Sudan, and Sudan.
- Headquarters: OPEC+ is headquartered in Vienna, Austria, the same as OPEC.
- Global Control: It controls 40-45% of global crude oil production and over 80% of proven reserves.
Production Framework
- Quota System: Official quotas impose mandatory daily production limits on each member country.
- Voluntary Cuts: Using voluntary cuts, countries can reduce output beyond assigned quotas to influence oil market supply.
- Decision Process: Changing official quotas requires unanimous approval from all 22 members, whereas voluntary cuts require only limited consensus.
Core Objectives
- Market Stability: Coordinates oil production to prevent extreme volatility in global crude prices.
- Policy Unity: Presents a collective production policy to safeguard shared economic interests.
- Price Balance: Ensure fair returns to producers while maintaining stable oil supplies for consumers.
About Organisation of the Petroleum Exporting Countries (OPEC)
- About: OPEC is an intergovernmental body coordinating the petroleum policies of member nations.
- Establishment: It was founded at the Baghdad Conference in 1960 by Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela.
- Headquarters: Located in Vienna, Austria, since 1965; originally in Geneva, Switzerland.
- Membership: OPEC currently has 12 member countries.
- Middle East: Iran, Iraq, Kuwait, Saudi Arabia, United Arab Emirates.
- Africa: Algeria, Congo, Equatorial Guinea, Gabon, Libya, Nigeria.
- South America: Venezuela.
- Decision Rule: It operates on the principle of unanimity, where each member has one equal vote.
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Reasons for Maintaining the Current Production
- Market Surplus: Rising non-OPEC supply from the U.S., Brazil, and Guyana has outpaced global demand growth, creating a persistent supply surplus.
- Price Stability: Global oil prices fell by 18% in 2025, prompting OPEC+ to curb the risk of oversupply.
- Seasonal Demand: The first quarter is historically the weakest period for global oil demand.
Geopolitical Uncertainty
Impact of the Decision on India
- Macroeconomic Impact: Steady OPEC+ output sustains high crude prices, keeping India’s current account deficit near 1% of GDP.
- Refining Pressure: Restricted supply from OPEC+ and US tariffs erode the Russian oil discount arbitrage for Indian refiners.
- Energy Security: Continued OPEC+ supply control heightens the urgency to expand Strategic Petroleum Reserves to comply with the IEA’s 90-day reserve norm.
- Sectoral Impact: Higher crude prices raise upstream earnings of Indian companies (ONGC) but squeeze downstream margins of Indian OMCs (IOCL, BPCL).
Read More > Organisation of the Petroleum Exporting Countries (OPEC)
{GS2 – Governance} Acid Attacks in India **
- Context (TH): A 2009 Delhi acid attack case ended in acquittal after 16 years, exposing weak conviction rates, long judicial delays and systemic failures in delivering justice to survivors.
Status of Acid Attacks in India
- Incidence Levels: 207 acid attack cases were reported in 2023, up from 176 in 2021, indicating persistent prevalence despite legal deterrence.
- Gender Dimension: Women constitute over 80–85% of acid attack victims, with NCRB data consistently showing male perpetrators in the vast majority of cases.
- Underreporting Reality: Independent estimates suggest ~1,000 attacks annually, highlighting fear, stigma and family pressure suppressing official reporting.
- Regional Concentration: States like West Bengal (57 cases), Uttar Pradesh (31) and Gujarat (15) reported the highest numbers in 2023.
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Legal Framework Against Acid Attacks
- Specific Criminalisation: Acid attacks are covered under Section 124 of Bharatiya Nyaya Sanhita, 2023, prescribing 10 years to life imprisonment with mandatory victim compensation.
- Attempt Penalised: Acid attack attempts attract 5–7 years of imprisonment.
- Medical Obligation: All public and private hospitals must provide free emergency treatment, with penalties up to one year imprisonment and/or a fine for non-compliance.
- Regulated Sale Mandate: Acid sales are legally restricted through mandatory photo ID verification, maintenance of buyer registers, and oversight by the Sub-Divisional Magistrate (SDM).
Key Implementation Gaps
- Low Conviction Rates: Out of 703 cases pending in courts in 2023, only 16 convictions were recorded.
- Judicial Delays: Trials often stretch beyond a decade; E.g., the Shaheen Malik case (2009) ended in acquittal after 16 years, despite Supreme Court directions for speedy trial in acid attack cases.
- Poor Investigation: NCRB 2023 shows only 86 charge-sheeted cases out of 207 reported, reflecting weak evidence collection, compromised investigations and frequent pressure on survivors to settle.
- Compensation Delays: Survivors entitled to ₹3 lakh often receive it after years, delaying rehabilitation.
Consequences for Survivors and Society
- Lifelong Disability: Survivors often undergo 20–30 reconstructive surgeries, face blindness and permanent disfigurement, resulting in long-term loss of livelihood and economic independence.
- Psychological Trauma: High prevalence of PTSD, depression and social withdrawal, compounded by stigma, prolonged litigation and repeated court appearances.
- Erosion of Trust: Low conviction rates (only 16 convictions in 703 cases, 2023) and prolonged trials discourage reporting, normalise impunity and weaken faith in the criminal justice system.
Way Forward
- Victim Rehabilitation: Create a national lifelong support fund covering surgeries, counselling and skilling. (Justice J.S. Verma Committee recommendation).
- Acid Control: Enforce strict licensing and audits of acid sales; E.g., Bangladesh seals shops within 30 days for illegal sales, reducing attacks from 494 (2002) to 13 (2024).
- Judicial Sensitisation: Mandatory gender-sensitivity training for judges and prosecutors; E.g., periodic training modules under the National Judicial Academy.
- Fast-Track Justice: Establish dedicated fast-track courts for acid attacks; E.g., Special POCSO courts show faster case disposal and higher victim confidence.
{GS3 – IS} Broadened Scope of Terrorist Act under UAPA **
- Context (TH): The Supreme Court expanded the definition of terrorist act under the Unlawful Activities (Prevention) Act to cover not only the final violence but also preparatory & conspiratorial actions.
Unlawful Activities (Prevention) Act, 1967 (UAPA)
- Primary Law: UAPA is India’s principal anti-terrorism law aimed at preventing threats to national sovereignty and integrity.
- Investigating Agency: The National Investigation Agency (NIA) has nationwide primary jurisdiction to investigate offences under the UAPA.
- Search Powers: The 2019 amendment removed the requirement for prior state DGP approval for raids and seizures in UAPA cases.
- Investigating officers now require sanction only from the Director General of the NIA.
- Terror Designation: After the 2019 amendment, the Central Government can designate both organizations and individuals as terrorists.
- Bail Standard: Under Section 43D(5), bail is denied if the court finds the accusations prima facie true based on prosecution material.
- Extended Custody: UAPA permits detention without a charge-sheet for up to 180 days, unlike the 60–90 days under CrPC.
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What Constitutes a Terrorist Act
Unlawful Activities (Prevention) Act, 1967
- Definition: Section 15 of the UAPA defines a terrorist act as any act committed with the intention to –
- Threat Intent: Threaten India’s unity, integrity, security, or sovereignty.
- Terror Intent: Strike terror among people or any section of people in India or abroad.
- Methods Clause: Such intent can be carried out using conventional weapons, hazardous substances, or any other methods.
Bharatiya Nyaya Sanhita (BNS)
- Statutory Codification: Bharatiya Nyaya Sanhita (BNS) 2023 codifies terrorism as a distinct offence under Section 113.
- Expanded Intent: It broadens the scope to cover acts aimed at intimidating the public or disrupting public order.
- New Criteria: The provision treats extensive interference with critical infrastructure or damage to national economic security as terrorism.
- Police Discretion: A Superintendent of Police may decide whether to register a terrorism case under BNS or UAPA.
Supreme Court Interpretation of Terrorism
- Motive Test: In Hitendra Vishnu Thakur, the Court distinguished terrorism from ordinary crime based on the intent to overawe the government or instil terror in society.
- Beyond Disorder: Terrorist acts must threaten the nation’s unity, integrity, security, or sovereignty beyond mere law-and-order disruptions.
- Membership Rule: In Arup Bhuyan (2023 Review), the Supreme Court ruled that mere membership of a banned organisation is a crime, even without violence or incitement.
Broadening the Scope of “Terrorist Act”
- Scope Expansion: In the recent Gulfisha Fatima ruling, the Supreme Court broadened Section 15 of UAPA by considering organised, preparatory activities as part of a terrorist act.
- Residual Means: The phrase “by any other means of whatever nature” in Section 15 includes non-violent actions deliberately planned to cause terror.
- Civic Paralysis: Democratic protests like road blockades may qualify as terrorist acts if part of conspiracies to paralyze state functions.
- Non-Violent Terror: Acts that disrupt civic life can be terrorism if they threaten national sovereignty, even without immediate physical violence.
Bail and Legal Consequences under UAPA
- Role Inquiry: The Court established a ‘hierarchy of participation’, focusing on the individual role rather than the overall gravity of the offence.
- Peripheral Role: Peripheral or minor participants are more eligible for bail than masterminds or ideological drivers of terrorism.
- Delay Rule: Mere passage of time or trial delay does not automatically justify bail in a prima facie terrorism case.
- Constitutional Delay: Delay becomes a ground for bail only when continued incarceration reaches ‘constitutional impermissibility’ under Article 21, as held in K.A. Najeeb (2021).
- No Mini-Trial: At the bail stage, courts cannot weigh evidence, consider defence arguments, or assess the admissibility of prosecution material.
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Read More > Unlawful Activities (Prevention) Act (UAPA)
{GS3 – DM} Disaster Risk Financing as a Pillar of Economic Resilience **
- Context (TH): The OECD recently published the ‘Economic Outlook for Southeast Asia, China and India’ report, with a thematic focus on Disaster Risk Financing (DRF).
- The Organisation for Economic Co-operation and Development (OECD) is an international economic organisation comprising 38 high-income countries that coordinate economic and trade policies.
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Significant Findings of the Report
- Regional Risk: Emerging Asian economies, including India, China, and ASEAN, face a rising frequency and intensity of natural disasters.
- Human Impact: Over the past decade, Asia recorded about 100 disasters each year, affecting nearly 80 million people.
Key Findings on India
- Global Ranking: According to the World Risk Index 2025, India is the second-most vulnerable country, after the Philippines.
- Economic Losses: Between 1990 and 2024, India recorded average annual disaster losses of about 0.4% of GDP.
- Hazard Profile: India’s disaster vulnerability is primarily driven by hydrological hazards (floods, landslides) and meteorological hazards (storms, cyclones).
- Insurance Gap: Only 9% of India’s total economic losses from disasters are covered by insurance.
- Funding Pattern: India largely depends on reactive ex-post disaster financing rather than planned and proactive ex-ante risk financing.
- Growth Risk: Frequent climate shocks threaten India’s 6-7% growth trajectory if financial resilience remains fragile.
Key Recommendations for India
- Legal Reform: Mandate risk-layered disaster financing as a core fiscal function.
- Insurance Expansion: Promote catastrophe bonds and parametric insurance to diversify disaster risk away from government budgets.
- Regional Pooling: Deepen participation in regional risk pools like SEADRIF (Southeast Asia Disaster Risk Insurance Facility) to diversify risk exposure.
- Risk Literacy: Train officials on financial resilience to transition disaster management from immediate relief to proactive preparedness.
Read More> Earthquake Insurance
{Prelims – IR} Justice Mission 2025
- Context (ET): China conducted a large-scale live-fire military exercise around Taiwan named ‘Justice Mission 2025’.
- The operation simulated a multi-directional blockade of Taiwan’s major ports and showcased AI-enabled futuristic tools.
- These drills, viewed as part of China’s “grey-zone” tactics, marked the closest live-fire activity near Taiwan’s coast.
About China-Taiwan Conflict
- Early History: Taiwan was administered by China’s Qing Dynasty from 1683 until its cession to Japan in 1895, following the First Sino-Japanese War.
- Post-War: After Japan’s defeat in 1945, Taiwan was returned to the Republic of China (ROC).
- Civil War Split: After losing the civil war in 1949, the Nationalist Kuomintang (KMT) government moved to Taiwan, while Mao Zedong declared the People’s Republic of China (PRC) on the mainland.
- Diplomatic Shift: In 1971, the UN passed Resolution 2758, recognising the PRC as China’s sole representative, causing Taiwan to lose its UN seat.
- Recent Phase: The 2016 election and 2020 re-election of President Tsai Ing-wen marked a pro-independence phase in Taiwan, intensifying tensions with China.
- One China Principle: Beijing claims there is only one China, with Taiwan as part of it, and that the PRC is the sole legal government.
- One China Policy: A diplomatic stance that acknowledges Beijing’s position without formally recognising its sovereignty claim to Taiwan.
Read More > China – Taiwan Conflict | Taiwan Strait
{Prelims – IR} India Launches e-B-4 Visa for Chinese nationals
- Context (TH): India launched an e-Production Investment Business Visa, the ‘e-B-4 Visa’, exclusively for Chinese nationals.
- The electronic business visa aims to streamline the entry of Chinese business personnel, supporting India’s manufacturing and industrial sectors.
- Permitted Activities: The visa covers equipment installation, commissioning, quality checks, essential maintenance, production, training, and senior management consultations.
- Compliance Rule: All e-B-4 holders must register electronically with the Foreigners Regional Registration Office within 14 days of arrival.
- Validity Period: The e-B-4 Visa permits a maximum stay of up to six months.
- Significance: The measure is part of diplomatic efforts to normalise India–China economic relations.
Read More > India-China
{Prelims – Agri} Recirculatory Aquaculture System (RAS) Facility Inaugurated *
- Context (PIB): The Smart Green Aquaculture Farm and Research Institute and the Recirculatory Aquaculture System (RAS) Facility were recently inaugurated in Hyderabad, Telangana.
- The facility is India’s first commercial-scale tropical RAS-based aquaculture farm for rainbow trout.
- It enables year-round tropical cultivation of rainbow trout and offers hands-on training in automation, biosecurity, and modern aquaculture systems.
About Recirculatory Aquaculture System (RAS)
- RAS is a land-based, closed-loop technology that filters and reuses water for fish farming in a controlled environment.
- Water Management: Advanced mechanical and biological filtration maintains optimal water quality while recycling about 90–99% of system water.
- Key Components: The system includes biofilters, mechanical filters, oxygenators, and UV/ozone units to control waste, toxins, and pathogens.
- Key Benefit: It enables high-density fish farming with minimal water use while reducing disease and biosecurity risks.
- Government Support: The Pradhan Mantri Matsya Sampada Yojana (PMMSY) provides financial assistance for establishing RAS units.
Read More > Fisheries Sector in India
{Prelims – Species} Asian Waterbird Census (AWC) *
- Context (TH): The 2026 Asian Waterbird Census (AWC) was held at Delhi National Zoological Park on National Bird Day (January 5).
- The survey recorded 1,310 waterbirds across 18 species, with Painted Storks being the most abundant.
- The AWC is an annual citizen science program that monitors waterbird populations and is part of the global International Waterbird Census (IWC).
- AWC data helps identify priority wetlands for protection under the Ramsar Convention and the Convention on Migratory Species (CMS).
- In India, it is conducted by the Bombay Natural History Society & the Wildlife Institute of India (WII).
Painted Stork (Mycteria leucocephala)
- The Painted Stork is a large wading bird native to tropical Asian wetlands.
- Physical Features: The birds have heavy yellow-orange bills, orange faces, white bodies with black breast bands, and are named for their rose-pink tertial feathers.
- Distribution: They are common across the Indian Subcontinent and Southeast Asia, with India hosting the largest share.
- Habitat: They prefer shallow freshwater wetlands, marshes, lakes and flooded agricultural fields (such as rice paddies).
- Behavioural Traits: Painted Storks are non-migratory but make short local movements driven by monsoons and food availability. They mainly communicate through bill-clattering displays.
- Key Threats: Wetland degradation due to urbanisation, industrial growth, & agricultural intensification.
- Conservation Status: IUCN: Least Concern. CITES: Appendix II
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{Prelims – Species} White-bellied Heron (Ardea insignis)
- Context (IE): The Kalai-II hydropower project, which recently received environmental clearance, is located in a white-bellied heron habitat.
Kalai-II hydroelectric project
- The project is planned on the Lohit River (tributary of the Brahmaputra) in Arunachal Pradesh.
- It is a 1,200 MW pondage-based plant with a concrete gravity dam and an underground powerhouse.
- It will be developed by THDC India Ltd, a public sector enterprise under the Ministry of Power.
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About White-bellied Heron (Ardea insignis)
- The White-bellied Heron, also called the Imperial Heron, is the world’s second-largest heron species.
- Physical Features: It has dark grey plumage, a white throat and belly and a large blackish bill with a greenish base.
- Behaviour Traits: It is shy, solitary, and piscivorous (fish-eating), typically standing motionless along fast-flowing rivers.
- Habitat: The species inhabits tropical and subtropical wetlands in the eastern Himalayan foothills; it prefers free-flowing riverine ecosystems with shallow stretches and large trees for nesting.
- Distribution: It occurs in small, fragmented populations in Bhutan (about 45%), Northeast India (Namdapha and Kamlang Tiger Reserves in Arunachal Pradesh), and northern Myanmar.
- Ecological Role: As a piscivorous predator relying on the abundance of fish, it acts as a bioindicator of the health of Himalayan freshwater ecosystems.
- Major Threats: Hydropower development, road construction, sand mining, overfishing, and poaching.
- Conservation Efforts: Bhutan established the world’s first White-bellied Heron Conservation Centre in 2021 for captive breeding.
- Conservation Status: IUCN: Critically Endangered; WPA: Schedule I
{Prelims – Defence} Suryastra *
- Context (TH): The Indian Army signed a contract to procure the Suryastra rocket launcher system to enhance deep-strike artillery capabilities.
- The contract was signed with an Indian private defence manufacturer in a technology partnership with Israel’s Elbit Systems.
- Suryastra is India’s first indigenous, universal, multi-calibre, long-range rocket launcher for surface-to-surface strikes.
- Range: The system delivers high-precision strikes at 150 km and 300 km.
- Capability: A single launcher can fire multiple types of ammunition (122 mm, 160 mm, 306 mm rockets) and Predator Hawk missiles.
- Significance: Suryastra strengthens Atmanirbhar Bharat by enabling the domestic production of long-range precision rocket artillery through technology transfer.