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➡️CHANDRAYAAN-2: FIRST-EVER OBSERVATION OF CME EFFECT ON LUNAR EXOSPHERE 1. Key Discovery • Chandrayaan-2 observed the effect of Sun’s Coronal Mass Ejection (CME) on the Moon’s exosphere — first time ever. : Shows how solar storms directly change the Moon’s thin atmosphere. 2. CHACE-2 Instrument Finding (Core scientific point) • CHACE-2 detected a sharp increase in total pressure of dayside lunar exosphere (order of magnitude rise). : More atoms were knocked off the lunar surface due to CME impact. Example: CME particles strike Moon → liberate atoms → exosphere becomes denser. 3. Scientific Importance • Gives new insight into space-weather interactions with airless bodies. : Helps understand how Sun influences Moon’s environment. Example: Helps refine models of lunar exosphere dynamics. 4. Relevance for Lunar Base Planning • CME-driven changes indicate challenges for building future moon habitats. : Extreme solar events can temporarily alter lunar environment. Example: Moon bases must be shielded against space weather radiation. 5. Mission Context • Chandrayaan-2 launched: July 22, 2019 (GSLV Mk-III). • Orbiter: Still functioning; delivered CHACE-2 instrument. • Lander Vikram: Lost communication during descent. • Total spacecraft payloads: 8 (orbiter) + 4 (lander). Chandrayaan-2’s CHACE-2 provided the world’s first observation of CME increasing the lunar exosphere pressure, improving understanding of space-weather effects and informing future lunar base design.

➡️Decline of Maoist Insurgency Maoist insurgency is at its weakest in decades, evidenced by a sharp fall in affected districts and rise in surrenders, arrests, and fatalities. 2. Key Data Points • Affected districts reduced from 75 (2013) → 11 (2025) – Massive territorial shrinkage of Maoist corridor. 3. Geographic Shrinkage • 2013: 75 affected districts – Bihar, Jharkhand, Odisha, Chhattisgarh, Maharashtra, MP. • 2018: Reduced to 60 districts – operations & development schemes consolidated. • 2025: Only 11 districts show LWE impact – confined mainly to Chhattisgarh & small pockets elsewhere. LWE footprint now limited to remote forest belts, losing strategic depth. 4. Reasons for Decline • Better coordination → Unified Command, multi-state ops reduced safe movement. • Improved road connectivity → Reduced jungle safe havens. • Greater tech use → Drones, SATP intel, better surveillance. • Pressure on leadership → Top commanders neutralised or surrendered. 5. Government Strategy • SAMADHAN doctrine – holistic response combining security, development, and rights. • Surrender & rehabilitation schemes – Cash incentives & social reintegration attracting cadres. • Focus on development – Roads, mobile towers, banking access weakening Maoist appeal. 6. Why Surrenders Increased • Leadership vacuum • Reduced safe havens • Improved state presence • Attractive rehab packages Fighters see no future sustainability in Maoist ranks. 7. Significance • Internal security improvement – Reduces India’s ‘Red Corridor’ vulnerability. • Boosts local governance – Panchayats functioning in previously inaccessible areas. • Enables development – Infrastructure projects proceed without extortion threats. • Strengthens policing morale – Fewer ambushes, improved officer presence. 8. Challenges Ahead (Balanced View) • Residual pockets in Bastar region – Difficult terrain + tribal alienation. • Urban networks – Intellectual and logistical chains remain. • Socio-economic grievances – Land alienation, displacement, mining-related conflicts.

➡️THE NEW ARC OF INDIA–AUSTRALIA COLLABORATION 1. Defence partnership deepening (Core theme) • India’s Defence Minister visited Australia for the first-ever 2+2 Defence Ministers’ Dialogue. • New agreements include: • Joint Maritime Security Collaboration Roadmap • Implementing Arrangement on Mutual Submarine Rescue Support • Air-to-Air Refuelling pact (2024 operationalisation) • Joint Staff Talks for exercises & interoperability Why important: Strengthens operational coordination in the Indian Ocean & Indo-Pacific. 2. Strategic Convergence due to China • Both countries face challenges from China’s assertiveness in the Indo-Pacific, maritime militarisation, and grey-zone tactics. • Nations like Japan, U.S., Australia, India (QUAD) see common threats in the region. Why important: India–Australia partnership becomes part of the wider Indo-Pacific security network. 3. Logistics, supply chain & industrial cooperation • Submarine rescue pact + industrial collaboration create reliable logistics & maintenance chains. • India offers Australia ship repair facilities and defence manufacturing capacities. Data point: India’s defence production reached ₹1.5 lakh crore recently. Why important: It builds long-term operational compatibility. 4. Interoperability through exercises & technology sharing • Exercises like Talisman Sabre improved communication, data-sharing, and tactical operations. • Australia contributes advanced tech: P-8 Poseidon, MQ-4C Triton, Ghost Shark underwater drone. Why important: Enhances maritime domain awareness and joint operational capability. 5. Shared values & institutional alignment • Relationship upgraded to Comprehensive Strategic Partnership (2020). • Driven by: • democratic values, • market linkages, • people-to-people ties (Indian diaspora in Australia). Why important: Ensures cooperation survives political cycles. 6. Maritime Cooperation as Core Focus • Both countries shifting from “warm words” to a stable maritime operating model. • Joint work on underwater platforms, anti-submarine warfare, and Indo-Pacific security architecture. Why important: Secures sea lanes & supply chains in the Indo-Pacific. 7. Critical Need: Reliability & trust in defence supply lines • Australia wants credible external defence partners → India stepping in. • India wants predictable access to Western platforms & spares. Why important: Reduces overdependence on any single country. 8. Looking Ahead • Collaboration must be incremental, steady, and realistic. • Needs: • faster logistics implementation, • better ship-repair agreements, • enhanced defence-industry joint projects, • stronger maritime domain awareness. Why important: Converts political goodwill into long-term security architecture.

20th oct…..👇

➡️Ayushman Bharat – PMJAY 1. Key Statistic (Most Important) • Women account for 49% of total hospital admissions under Ayushman Bharat–PMJAY. 2. Scheme Basics • Launched: 2018. • World’s largest government health insurance scheme. • ₹5 lakh per family per year health cover. • Covers: 15.14 crore eligible families + 8.57 crore State-scheme families. • Total coverage: ~14.69 crore families issued cards. 3. Top Treatments Availed • Haemodialysis – 14% (highest) • Multiple packages – 7% • Acute febrile illness – 4% • Acute gastroenteritis • Cataract & related procedures – 3% 4. Implementation Status • Present in 35 States/UTs (except West Bengal). • 2023: Included 37 lakh families of frontline workers (ASHAs, Anganwadi workers, helpers). 5. Important Initiatives under AB-PMJAY • Aapke Dwar Ayushman (ADA 3.0) → technology-led outreach + self-registration at grassroots. • Card saturation drive → 40.45 crore Ayushman cards issued.

➡️Microbial Link Between Arsenic in Soil & Low Rice Yield 1 Core Scientific Finding • Rice yield and arsenic toxicity depend mainly on which microbes dominate the paddy soil, NOT on how much arsenic is present in the soil. • Certain microbes convert arsenic into more toxic forms, which enter rice grains more easily. 2. Key Microbial Roles A. Methylating Bacteria → Increase Toxicity • These bacteria convert inorganic arsenic into organic arsenic forms: • DMA (Dimethylarsinic Acid) • DMMA (Dimethylmonothioarsinic Acid) • These forms directly enter rice grains, increasing contamination and damaging plant growth. B. Demethylating Archaea → Reduce Toxicity • These archaea break down DMA/DMMA, • Result → Less arsenic enters rice grains → Higher yield + safer rice. Conclusion: ➡ More methylators = more toxic arsenic ➡ More demethylators = safer rice + higher yield 3. The Disease Linked to Arsenic Straighthead Disease (Very Important) • Caused by high levels of DMA/DMMA. • Symptoms: • Empty, upright panicles • Poor grain filling • Severe yield loss (up to 70%). • Seen earlier in US, China, Bangladesh, West Bengal, and newly cultivated fields. 4. High-Risk Areas • Newly reclaimed or newly cultivated paddy fields (US, Europe, NE China) → more methylating microbes → higher arsenic toxicity. • In India: West Bengal and parts of the Gangetic basin already impacted by arsenic → higher vulnerability. 5. Why Climate Change Worsens the Problem • Hotter temperatures + altered flooding make arsenic more mobile in soil. • This shifts the microbial balance toward harmful methylating microbes. India-Relevant • India is the world’s second-largest rice producer. • 40% of India’s population relies on rice → high risk from arsenic contamination. • Soil fertilisation and water management can alter microbial balance. • Rice-growing regions like West Bengal, Assam, Bihar, Bangladesh are arsenic hotspots.

What is Kurinji? • Kurinji (Strobilanthes spp.) → A group of flowering plants in the Western Ghats. • Famous species: Neelakurinji (Strobilanthes kunthiana). 2. Key Periodicity • Neelakurinji blooms once in 12 years. • Strobilanthes sessilis blooms once in 8 years. • Other Strobilanthes species → bloom every 4, 10, or 20 years depending on altitude. 3. Habitat • Found in high-altitude grasslands of the Western Ghats → above 1,300 metres. • Gudalur (Nilgiris, TN) is a newly protected reserve area where mass blooming occurred. 4. Ecological Importance • Indicator species of healthy montane shola–grassland ecosystem. • Mass blooming supports bees, butterflies, hornbills, insects → increases pollinator activity. • Sensitive to disturbance → declines with invasive species (e.g., black wattle), habitat loss. 5. Biodiversity Significance • Western Ghats host 450+ Kurinji species, of which 150 are in India. • Kurinji bloom = sign of grassland recovery & biodiversity revival. • Highly endemic → strong UPSC keyword. 6. Conservation Angles • Blooming seen in areas notified under the Tamil Nadu Forest Act. • Protecting grasslands crucial → prevents decline of Nilgiri tahr, elephants, tigers.

19th oct…..👇

1. System Type • Nepal: Federal Parliamentary Republic (2015 Constitution). • India: Federal Parliamentary Democratic Republic. 2. Government Stability • Nepal: Frequent government collapses, caretaker PMs, unstable coalitions. • India: Stable governments; caretaker govt only during election transition. 3. Executive Structure • Nepal: PM is executive head; President is ceremonial, but coalition politics weakens the PM. • India: PM holds strong executive power backed by Lok Sabha majority. 4. Federal Structure • Nepal: 3 tiers — Federal, Provincial, Local (newly created provinces). • India: Union + States (Panchayats/Municipalities as local bodies). Constitutional Features( Nepal) • Bicameral Federal Parliament: • Lower House: House of Representatives (Pratinidhi Sabha) • Upper House: National Assembly (Rastriya Sabha) • Multi-party democracy with frequent coalition shifts. India–Nepal Relations • Open border, deep socio-cultural linkages. • Key treaties: 1950 Treaty of Peace and Friendship. • Hydropower cooperation: Arun III, Upper Karnali, West Seti proje • Key borders: Uttar Pradesh, Bihar, West Bengal, Sikkim, Uttarakhand. • Major rivers: Koshi, Gandaki, Karnali (originate in Nepal, flow into India). • Important passes: Lipulekh, Kalapani, Nathu La proximity.

➡️How Madagascar’s System Is Different from India’s 1. Type of System • Madagascar → Semi-Presidential System President + Prime Minister share power. • India → Parliamentary System Prime Minister holds all real executive power. 2. Head of State • Madagascar: President is directly elected and politically powerful. • India: President is indirectly elected and mostly ceremonial. 3. Head of Government • Madagascar: Prime Minister is appointed by the President; power depends on the President. • India: Prime Minister is leader of Lok Sabha majority; fully controls the executive. 4. Executive Power Distribution • Madagascar: Executive power is shared, but President dominates decision-making. • India: Executive power is centralized in the PM + Council of Ministers elected by Parliament. 5. Role of the Military • Madagascar: Military intervenes during political crises; influences leadership changes. • India: Military is completely apolitical; strict civilian control. 6. Political Stability • Madagascar: History of coups, protests, unstable governments. • India: Stable democratic transitions; no extra-constitutional power shifts. 7. Accountability • Madagascar: President is not directly accountable to parliament; dual executive creates tension. • India: PM and Council of Ministers are collectively responsible to Lok Sabha. ⭐Madagascar’s semi-presidential system gives dominant power to a directly elected President with frequent military involvement, whereas India’s parliamentary system ensures stable, civilian-led governance under a Prime Minister accountable to Parliament.

Border Instability: The Colombia–Venezuela border is porous, enabling drug trafficking, armed groups, and refugee flows, making the region highly volatile. • Great Power Interference: The Caribbean Basin remains a zone of U.S. interventionism and Russia–China influence, creating recurring geopolitical tension. 🌍 MAPPING POINTS • Caribbean Sea → Part of Atlantic Ocean; bordered by Venezuela, Colombia, Central America, Cuba, Hispaniola, Jamaica, Lesser Antilles. • Tachira State (Venezuela) → Borders Colombia; hotspot of cross-border tension. • Amazonas State (Venezuela) → Borders Colombia & Brazil; part of the Amazon rainforest. • Orinoco River Basin → Major South American basin flowing across Venezuela and Colombia. • Colombia–Venezuela border → Long, mountainous + forested; used as a drug transit route to the Caribbean Sea. 📌 STATIC FACTS 1. About Venezuela • Holds one of the world’s largest proven oil reserves (Orinoco Belt). • Member of OPEC. 2. About the Caribbean Basin • Historically under U.S. influence due to Monroe Doctrine (1823). • Key region for hurricane formation in the Atlantic. 3. Latin America • Some major subregions: Andean States, Southern Cone, Central America, Caribbean Islands. • Borders important seas: Caribbean Sea, Pacific Ocean, Atlantic Ocean. 4. Drug Trafficking • Major route: Colombia → Venezuela/Caribbean → United States.

➡️Rotavirus Vaccine Effective in India A major multi-centre study in Nature Medicine found that India’s indigenous rotavirus vaccine (Rotavac) has led to a substantial reduction in rotavirus gastroenteritis in children across India. Why it matters • Rotavirus causes 128,500 child deaths annually (under age 5). • It is one of the leading causes of severe diarrhoea in children. Study details • Conducted across 31 hospitals in 9 States (2016–2020). • Evaluated real-world performance after introduction in the Universal Immunization Programme (UIP). Effectiveness (Most important point) • 54% effectiveness in real-world national programme — almost the same as the 54% efficacy seen in phase-3 clinical trials. • Protection remained strong in the first two years of life, when rotavirus risk is highest. Impact • Paediatric hospitalisations due to rotavirus declined sharply. • Confirms vaccines work not only in trials but also in routine programmatic conditions, even in low- and middle-income settings. India Angle • Rotavac is indigenous, developed through a public–private partnership: • Department of Biotechnology • Bharat Biotech • NIH (U.S.) • CDC • PATH • Took nearly a decade to complete effectiveness studies.

18th oct 👇

Hybrid threats combine military + non-military tactics used simultaneously to weaken a country. Key Components & Examples 1. Cyberattacks • Example: Russia-linked hackers attacking Germany’s government websites or Ukraine’s power grid (2015). 2. Espionage • Example: Russian intelligence agents expelled from multiple EU countries for spying on defence institutions. 3. Disinformation & Propaganda • Example: Fake news campaigns during Brexit or EU elections to polarise society. 4. Political Influence Operations • Example: Funding / supporting the Russia-friendly AfD party in Germany. 5. Covert Operations • Example: Poisoning of Russian dissident Alexei Navalny, allegedly involving state-backed operatives. India Angle (Examples) India also faces hybrid threats from hostile actors: 1. Cyber intrusions • Example: Power grid attack in Mumbai (2020) attributed to foreign groups. 2. Disinformation warfare • Example: Fake social media campaigns during border tensions. 3. Espionage • Example: Attempts to infiltrate defence research and telecom networks. 4. Border + cyber + information mix • Example: During the India–China Ladakh crisis, cyberattacks and propaganda increased simultaneously.

How France’s System Is Different from India’s 1. Type of Political System France – Semi-Presidential • Executive power is split between the President (directly elected) and the Prime Minister. • The PM must keep the confidence of the National Assembly, even though the President appoints him. India – Parliamentary • Executive power rests entirely with the Prime Minister and the Council of Ministers. • PM must maintain the confidence of the Lok Sabha only. 2. Triggering of Confidence Votes France • Confidence motions are more frequent. • Opposition can easily initiate motions of censure. • PM can also attach a vote of confidence to any bill (Article 49.3 of the French Constitution). India • No-confidence motions require support of at least 50 MPs to be admitted. • Less frequent and more structured. • Government usually brings a confidence motion only when necessary. 3. Role of the President France • President plays a major role: • Appoints the PM • Can dissolve the National Assembly • Can influence the confidence equation India • President’s role is ceremonial once a government has majority support. • Cannot interfere in parliamentary confidence matters. 4. Government Stability France • Frequent confidence votes → greater instability. • “Cohabitation” can happen when President and Assembly are from different parties. India • Usually more stable because of clear majorities in Lok Sabha. • Confidence votes occur mainly during coalition crises. 5. Legal Consequences of Losing Confidence France • PM must resign immediately, President may appoint a new PM or dissolve Parliament. India • Entire Council of Ministers resigns. • President invites the largest party/coalition to form government. #prelims