Current Affairs 02 September 2025
Content Over 800 killed, 2,800 injured as earthquake strikes Afghanistan 2 more die of ‘brain-eating amoeba’ infection in Kerala India-U.S. relationship: trust defines partnership, not tariffs What is CEREBO, the brain tool developed indigenously? Can an AI image-to-video feature put children at risk? SC refuses to entertain plea against roll-out of 20% ethanol-blended petrol nationwide Geographers uncover why some rivers stay single while others split Over 800 killed, 2,800 injured as earthquake strikes Afghanistan What is an Earthquake? An earthquake = sudden shaking of Earth’s surface due to release of stored energy (elastic strain) in rocks. Occurs when two tectonic blocks slip past one another → seismic waves radiate out. Key terms: Hypocenter: Point inside Earth where quake starts. Epicenter: Point directly above it on surface. Magnitude: Measures energy released (Richter/Mw scale). Depth: Shallow quakes (<70 km) more destructive than deep ones. Relevance : GS I (Geography – Earthquakes, Plate Tectonics) + GS III (Disaster Management – Preparedness, Response, Regional Cooperation) Why Do Earthquakes Occur? Earth’s crust is divided into tectonic plates. Plates move (few cm/year), colliding, diverging, or sliding → stress builds → sudden slip → quake. Magnitude vs Impact: Each unit rise in magnitude ≈ 32x more energy. Magnitude 6 releases 32x more energy than magnitude 5. Why Afghanistan is So Vulnerable Tectonic Setting: Lies on collision zone between Indian Plate and Eurasian Plate. Collision rate: ~45 mm/year (among fastest in world). Creates complex fault systems (thrust + strike-slip faults). Seismicity: Hindu Kush region → one of most active globally. Recorded >7 major quakes (>7.0 magnitude) since 1900. Geography & Settlement Patterns: Mountainous terrain → landslides, blocked rescue. Many rural houses → made of mud-brick, stone → collapse easily. Dense family sleeping arrangements at night → high casualties. Socio-political Factors: Weak governance, poor infrastructure, limited disaster response. Conflict zones → difficult access for rescue and aid. Why Do Shallow Quakes Cause More Damage? Depth < 70 km = “shallow focus earthquake.” Energy is released close to surface → intense ground shaking. Example: 2023 Herat quakes killed ~1,300 people; 2025 Nangarhar quake killed 800+. Implications of Afghanistan’s Seismic Vulnerability Humanitarian: Mass deaths, injuries, displacement. Economic: Destruction of homes, livelihoods, agriculture. Regional Spillover: Tremors affect Pakistan, Iran, Central Asia. Geopolitical: International aid dependence; Taliban regime’s limited capacity. Way Forward – Reducing Risks Preparedness: Early warning systems; seismic monitoring networks. Community awareness & drills. Resilient Infrastructure: Earthquake-resistant construction codes (mud-brick retrofitting). Ban on unsafe hillside settlements. Disaster Response: Regional cooperation (SAARC, SCO) for disaster relief. Pre-positioned rescue supplies in quake-prone zones. Long-term Strategy: Integrate seismic risk into urban planning. International support for rebuilding with resilience. 2 more die of ‘brain-eating amoeba’ infection in Kerala Basics Disease: Amoebic meningoencephalitis = rare, fatal brain infection caused by free-living amoebae. Causative agent: Naegleria fowleri → causes Primary Amoebic Meningoencephalitis (PAM). Balamuthia mandrillaris / Acanthamoeba → cause Granulomatous Amoebic Encephalitis (GAE). Mortality rate: ~95% despite treatment. Relevance : GS II (Health – Communicable Diseases, Public Health Policy) + GS III (Environment – Climate Change & Health; Science & Tech – Emerging Diseases) Transmission Amoeba enters the human body through the nose while swimming/bathing in contaminated water. Not transmitted person-to-person. Travels along olfactory nerves → brain → causes inflammation. Symptoms Incubation: 5–10 days after exposure. Early: fever, headache, nausea, vomiting. Later: stiff neck, confusion, seizures, hallucinations, coma → death. Variants PAM (Primary Amoebic Meningoencephalitis): acute, rapid, usually Naegleria fowleri. GAE (Granulomatous Amoebic Encephalitis): slower progression, linked to Acanthamoeba/Balamuthia. Kerala Outbreak (2024–25) Location: Kozhikode and Malappuram districts. Deaths: 3 confirmed (including an infant, a 9-year-old, and a 52-year-old). Cases: 42 suspected; 13 under treatment, 8 in ICU. Likely source: contaminated well water used domestically. Public health response: State-wide chlorination drive for waterbodies. Why Kerala is Seeing Cases Environmental factors: warm, stagnant freshwater bodies (ideal for amoeba growth). Behavioral factors: widespread use of untreated well water. Climatic factors: rising temperatures, erratic rainfall → increased microbial proliferation. Detection gap: under-reporting due to misdiagnosis as bacterial/viral meningitis. Public Health Implications Health burden: High fatality, affects children disproportionately. Surveillance challenge: Rare disease → delayed diagnosis, limited lab capacity. Water safety crisis: Highlights gaps in rural water management. Psychosocial impact: Fear of “brain-eating amoeba” could trigger panic and mistrust in public water systems. Policy & Governance Response Kerala Health Dept: Emergency surveillance and awareness campaigns. Chlorination of wells, ponds, water tanks. Gaps: Lack of early diagnostic infrastructure. Absence of national guidelines on amoebic infections. Weak enforcement of water quality standards in rural areas. Way Forward Water safety: Regular monitoring, chlorination, deep cleaning of wells. Early detection: Equip district hospitals with PCR tests for amoebae. Treatment protocols: Stock drugs like Amphotericin B, Miltefosine. Community awareness: Avoid swimming in stagnant waters, ensure boiled/filtered water for infants. Research need: National registry on rare infections; climate-disease link studies. Integrated action: Converge health, local govt, water supply boards. India-U.S. relationship: trust defines partnership, not tariffs Basics Tariff: A tax imposed by a government on imports (can be ad valorem, specific, or mixed). Purpose: Protect domestic industries, correct trade imbalances, or exert geopolitical leverage. Impact: Makes foreign goods costlier → reduces competitiveness → hits exporters. Relevance: GS II (International Relations – India–U.S. Relations, WTO) + GS III (Economy – Trade Policy, Protectionism vs Free Trade) The 2025 U.S. Move Decision: U.S. doubled tariffs to 50% on a wide range of Indian exports. Scale: $87.3 billion worth of Indian exports to U.S. in 2024; $48–55 billion now directly at risk. Sectors hit hardest (labour-intensive, job-creating): Gems & jewellery: ~$10B (25% of exports go to U.S.). Textiles & apparel: ~$8B (70% destined to U.S.). Agriculture: ~$6B (rice, spices, seafood, niche agri-products). Leather & footwear: ~$3B. Exporters rushed to fulfill orders before tariffs took effect (July 2025: jewellery exports +16%, lab-grown diamonds +27.6%). Why This Matters Economic shock: Job-intensive sectors risk losing U.S. market share to cheaper suppliers (e.g., Bangladesh, Vietnam). Value chain disruption: India’s traditional export strengths undermined. Perception issue: Seen as a setback after decades of building a “strategic, multi-faceted” U.S.-India relationship. Areas Unaffected / Thriving Pharmaceuticals: $50B industry, $3.7B exports in H1 2025; exempt from tariffs. India supplies 40% of U.S. generics. Services & IT: $387.5B trade in FY 2024–25; $33.2B to U.S. → remains strong (IT, BFSI, consulting). Defence & Security: Joint exercises, co-production, technology transfers, intelligence sharing continue. Energy & Climate: LNG imports, renewable partnerships, green hydrogen cooperation unaffected. Space & Innovation: NASA–ISRO projects, digital innovation partnerships expanding. Aviation: Boeing orders, airport modernization projects remain robust. Strategic Dimension Beyond tariffs: Diaspora: 4.8M Indian-origin population; >150 Indian-origin CEOs in global corporations. Students: >200,000 Indians in U.S. universities, contributing to talent & innovation pipelines. Soft power: Indian festivals in U.S. politics & culture reinforce people-to-people trust. Resilience of ties: Survived Cold War suspicion, sanctions, past trade disputes → trust, not tariffs, defines partnership. India’s Possible Responses Short-term: Diversify markets (Africa, Latin America, Indo-Pacific). Speed up order completion to minimize immediate losses. Medium-term: Strengthen domestic resilience: move up value chain, invest in design & branding (esp. textiles & jewellery). Innovate supply chains to reduce U.S. dependence. Long-term: Persist in “hardware diplomacy” (defence, energy, tech) while tariffs dominate “trade headlines.” Leverage diaspora & people-to-people ties as the “software” of U.S.-India relations. Push for WTO-compatible dispute resolution if tariffs violate norms. Way Forward Balanced strategy: Protect vulnerable sectors (MSMEs in textiles, gems, leather). Proactive diplomacy: Use 2+2 dialogue & Quad to negotiate trade relief. Atmanirbhar Bharat push: Reduce vulnerability to sudden external shocks. People-first diplomacy: Use diaspora and education linkages as stabilizers. What is CEREBO, the brain tool developed indigenously? Basics of the Device Developer: Collaboration between ICMR, MDMS, AIIMS Bhopal, NIMHANS Bengaluru, and Bioscan Research. Nature: Hand-held, portable, non-invasive tool. Purpose: Early detection of Traumatic Brain Injuries (TBI) → intracranial bleeding + edema. Technology: Uses near-infrared spectroscopy + machine learning. Output: Radiation-free, colour-coded results within 1 minute. Safety: Suitable for infants, pregnant women, unskilled/paramedic use. Relevance : GS II (Health – Healthcare Access, Affordable Technology) + GS III (Science & Tech – AI, Medical Innovation, Atmanirbhar Bharat/Make in India) Importance of CEREBO Accessibility: Designed for areas lacking CT/MRI (ambulances, rural clinics, trauma centres, disaster response units). Affordability: Cost-effective, avoids expensive imaging. Speed: Reduces time-to-diagnosis → critical in the “golden hour” for brain injuries. Triage support: Helps decide which patients need urgent CT/MRI. Global adoption: Potential use in military, disaster, and emergency healthcare systems. Clinical & Regulatory Validation Trials: Multi-centre clinical performance evaluation at leading trauma/neuro centres. Evidence: Confirmed diagnostic accuracy, decision-making speed, integration feasibility. Post-market surveillance: Positive feedback on adoption by frontline staff. Health Technology Assessment: Recommends use in tertiary care for: Faster CT scan access. Optimised triage. Reduced imaging costs. Understanding Traumatic Brain Injury (TBI) Definition: Brain dysfunction caused by sudden external trauma → mild (concussion) to severe. Common causes: Road traffic injuries: ~60%. Falls: 20–25%. Violence: ~10%. Epidemiology (India): 1.5–2 million injured annually. ~1 million deaths per year. Major cause of morbidity, mortality, disability, and socio-economic burden. Traditional diagnosis: Glasgow Coma Scale (subjective, error-prone). Imaging (costly, needs infrastructure, not always accessible). Complications: Permanent brain damage, cognitive impairments, emotional instability, higher neurodegenerative risk. Why CEREBO is a Game-Changer Bridges diagnostic gaps in rural & underserved areas. Decentralises brain injury care → frontline workers can screen before reaching tertiary centres. Reduces mortality by enabling early detection and timely intervention. Supports universal health coverage goals (affordable, accessible, scalable tech). Global relevance: Could be adopted by WHO emergency health kits, disaster relief operations, and military medical units. Challenges / Limitations Needs large-scale deployment funding. Requires training modules for paramedics & unskilled users. Potential risk of false positives/negatives in borderline cases. Must integrate seamlessly into existing trauma-care pathways. Way Forward Scale-up production with Make in India & MedTech Mission. Integrate with National Health Mission (NHM) & Ayushman Bharat emergency care. Promote PPP collaborations for faster adoption. Continuous post-market surveillance to refine accuracy. Explore export potential as a low-cost diagnostic tool for LMICs (low- and middle-income countries). Can an AI image-to-video feature put children at risk? Basics of the Incident Trigger: Reddit co-founder Alexis Ohanian used MidJourney to animate a childhood photo with his mother. Reaction: Many empathised with the emotional value of reliving a memory. Others criticised it as creating “false memories”, interfering with healthy grieving. Virality: Video gained 20M+ views on X, sparking global debate. Relevance : GS III (Science & Tech – AI & Deepfakes; Cybersecurity) + GS IV (Ethics – Technology & Society, Child Protection, Digital Ethics) Technology Behind It AI Photo-to-Video Tools: MidJourney, Google Photos “Create”, xAI’s Grok Imagine. Process: Still photo → AI predicts missing frames → generates motion (hair moving, hugs, eye blinks). Evolution: Earlier: AI upscaling (removing blur/pixelation). Now: Generative AI → morphing, object removal, filling gaps, creating lifelike but synthetic videos. Potential Benefits Memory preservation: Reviving old or damaged photos of loved ones. Cultural heritage: Restoring archival photos/videos for museums and education. Entertainment: Creative storytelling, personalisation in media. Accessibility: Helping visually impaired people experience photos in dynamic formats. Therapeutic potential: Comfort for grieving families, closure in some contexts. Risks & Concerns False memories: Risk of altering personal or collective memory. Emotional manipulation: Artificial comfort may hinder natural grieving. Consent & ethics: Photos of deceased or minors turned into videos without permission. Child safety: Cybercriminals misuse to create synthetic CSAM (Child Sexual Abuse Material). Example: U.S. teen’s suicide after extortion from AI-generated nudes. NCMEC reports 7,000+ cases (2022–24) involving AI-enabled exploitation. Privacy: Minors’ photos online can be weaponised into deepfakes. Cultural harm: Morphing celebrities or leaders → reputational damage, misinformation. Legal & Ethical Dimensions Copyright: Editing copyrighted images usually requires permission. EU (GDPR): Children (<16) cannot consent to use of personal data/images. AI-generated “synthetic media” in legal grey zones unless explicitly illegal. U.S.: NCMEC raises alarm on GenAI + child exploitation. Deepfake laws vary by state. India: IT Rules 2021: Platforms must remove morphed/AI deepfake content. MeitY advisories: Explicit takedown obligations for CSAM/deepfakes. Platforms like Meta, Google, X → mandated grievance officers in India. Ethics: Raises questions of consent, dignity, autonomy, especially for vulnerable groups (children, deceased). Platform Safeguards Google Photos: Limited prompts (“subtle movements”, “I’m feeling lucky”). Adds invisible digital watermark (SynthID) + visual watermark. Red teaming, content filters, user feedback loops. xAI (Musk): No clear safeguards disclosed yet. Industry gaps: Guardrails uneven, enforcement weak, AI firms aggressively promoting services. Governance & Policy Gaps Global gap: No comprehensive international framework for synthetic media misuse. Law lagging tech: Regulations designed for explicit content, not synthetic “realistic” but non-explicit media. Accountability challenge: Who is liable — creator, platform, or AI company? Detection limitations: Watermarks can be bypassed; filters not foolproof. Way Forward Stronger regulations: Global framework on AI content moderation (like GDPR but AI-specific). Child protection: Explicit ban on synthetic CSAM (like real CSAM). Technical safeguards: compulsory watermarking, detection standards. Consent & transparency: Mandatory disclosure when AI-modified content is used. Awareness & literacy: Digital literacy campaigns on risks of AI-generated deepfakes. Ethical AI: Encourage responsible use (e.g., memory preservation with explicit consent, educational uses). India-specific: Integrate with upcoming Digital India Act, focus on AI deepfake detection, strict liability on platforms. SC refuses to entertain plea against roll-out of 20% ethanol-blended petrol nationwide Basics of the Case Petition: Filed challenging nationwide roll-out of E20 fuel (20% ethanol-blended petrol). Claim: Violates rights of vehicle owners whose cars are incompatible with E20. No option left for ethanol-free petrol (older blends like E5, E10 phased out). Risks mechanical damage, insurance denial, and reduced efficiency. Petitioner’s Demand: Continue availability of ethanol-free petrol for vehicles manufactured before April 2023. Mandate clear ethanol labelling at all fuel stations. Conduct nationwide impact study on non-compatible vehicles. Relevance: GS III (Environment – Clean Energy Transition, Climate Mitigation) + GS III (Agriculture – Farmer Income, Biofuel Policy) + GS III (Economy – Energy Security, Consumer Rights) Supreme Court’s Decision Bench: CJI B.R. Gavai & Justice K. Vinod Chandran. Dismissed Petition: Refused to interfere in government’s clean fuel policy. Reasoning: Policy linked to farmers’ income, energy security, and forex savings. Court unwilling to obstruct India’s clean fuel transition. AG R. Venkataramani suggested petition reflected vested interests against blending. Government’s Stand Benefits of E20: Boosts sugarcane farmers’ income. Reduces oil imports (India imports ~85% of crude). Cuts carbon emissions. Ministry of Petroleum claimed: better acceleration, improved ride quality. Insurance Validity: Clarified that policies remain valid for vehicles using E20. Implementation: E20 being gradually rolled out since 2023, replacing E5/E10. Issues Raised by Petitioners Efficiency Loss: NITI Aayog’s 2021 report: E20 could cut fuel efficiency by 6–7% in 4-wheelers and 3–4% in 2-wheelers. Vehicle Damage: Non-compatible engines may suffer corrosion, deposit buildup, or faster wear. Consumer Rights: Lack of choice (no ethanol-free petrol). Breach of right to informed choice under Consumer Protection Act, 2019 (absence of proper labelling). Liability Gaps: Vehicle manufacturers & insurers won’t cover damage caused by E20 use in non-compatible vehicles. Broader Context India’s Ethanol Blending Policy: E20 target by 2025-26 (advanced from 2030). Part of National Biofuel Policy, 2018. Current status (2024-25): E20 rollout in progress; E10 nearly universal. Global Practices: U.S., Brazil widely use higher ethanol blends (E20–E85). Requires compatible flex-fuel vehicles. Economic Linkages: Supports sugar sector by diverting surplus cane to ethanol. Helps stabilise sugar prices and ensure rural incomes. Challenges & Risks Technical: Older vehicles not compatible → mechanical degradation. Mileage reduction → higher consumer costs. Agricultural: Over-reliance on sugarcane (water-intensive crop). Risk of food vs fuel debate if more land shifts to ethanol crops. Environmental: While ethanol cuts tailpipe emissions, cane cultivation strains water resources. Consumer Protection: Lack of awareness, limited choices at pumps. Analysis of SC Verdict Positive: Reinforces India’s clean energy & self-reliance transition. Judicial deference to policy choices on energy & climate. Concerns Ignored: Consumer choice & compensation for vehicle damage. Adequacy of public consultation & awareness campaigns. Balance between farmers’ welfare vs consumer rights. Way Forward Technical Solutions: Gradual phase-out of old vehicles, retrofit options for compatibility. Mandatory labelling of ethanol content at pumps. Policy Safeguards: Transitional period: Ensure parallel supply of ethanol-free petrol. Consumer compensation framework for engine damage. Agricultural Diversification: Encourage second-generation biofuels (crop residues, waste, maize, sorghum). Reduce sole dependence on sugarcane ethanol. Public Awareness: Campaigns on efficiency changes, safety, and insurance coverage. Geographers uncover why some rivers stay single while others split Basics of River Typology Single-thread rivers: Flow in one continuous channel. Typically meandering, with equilibrium between bank erosion and bar accretion. Width remains relatively stable. Multi-thread rivers (braided): Split into multiple channels separated by bars/islands. Arise when erosion exceeds deposition, widening the channel until it splits. Exhibit inherent instability and frequent lateral shifts. Relevance: GS I (Geography – Fluvial Geomorphology, River Systems) + GS III (Disaster Management – Floods, River Basin Management, Human Interference in Natural Systems) The UCSB Study (2023, Science) Dataset: 84 rivers across the globe. 36 years of Landsat satellite imagery (1985–2021). Method: Particle Image Velocimetry — tracked small changes in annual satellite images. Produced >4,00,000 measurements of erosion vs accretion. Key Finding: Single-thread rivers → balance between erosion and deposition. Multi-thread rivers → erosion dominates deposition → widening & splitting. Thus, erosion imbalance drives multi-threading. Supporting Stanford Study (2023) Focus: Role of vegetation in meandering rivers. Findings: Vegetated bends → move outward (increase sinuosity). Unvegetated bends → migrate downstream without much lateral shift. Vegetation causes levee formation, influencing bend migration & floodplain evolution. Human Interference in River Morphology Drivers of change: Damming, diking, sediment mining, agriculture, channelization. Many rivers have transitioned from multi-thread to single-thread due to artificial confinement. India example: Ganga and Brahmaputra sections artificially confined with embankments → altered natural dynamics. Case Studies: Indian Rivers Ganga (Patna, Farakka, Paksey): Exhibits both single-thread and braided stretches. Brahmaputra (Pasighat, Pandu, Bahadurabad): Classical braided river. Very high erosion rates, unstable channels. Sub-channels widen and split repeatedly → inherent instability. Implications for Flooding & River Management Multi-thread rivers: Higher flood and erosion risks. Rating curves (used to measure flow discharge) must be updated frequently. River restoration: Multi-channel rivers can return to natural state relatively quickly if allowed space. Nature-based solutions: Remove artificial embankments. Restore floodplains. Vegetated buffer zones. Reactivate abandoned channels. Wetland creation in braided stretches. Conceptual Shifts in River Geomorphology Old view: Rivers shaped by equilibrium of erosion and deposition. New view (UCSB study): Instability cycles drive multi-thread rivers — widening → splitting → widening again. Old view: Plants co-evolved with meandering rivers. New view (Stanford study): Vegetation changes migration dynamics, not just stability. Broader Significance Geomorphology: Advances theory of river channel formation. Ecology: Different river types → different habitats & ecosystem services. Climate Adaptation: As extreme rainfall increases, river instability becomes a key risk factor. Engineering: Models for flood prediction must move beyond fixed-width assumptions. Policy: Calls for integrated river basin management that respects natural morphodynamics.