UPSC CSE Why

@CSEWhy Times - Feb 23, 2026

Pre & Mains Notes

1. New CPI Base (2024) & Clearer Inflation Signal What happened • CPI (General Combined) base year revised to 2024 (index = 100) • CPI at 104.46 in Jan 2026 • Basket reorganised into 12 categories (COICOP 2018) • Food weight reduced; housing & services weight increased • Rural housing and utilities explicitly included • Telangana (5%) highest; followed by Kerala, Tamil Nadu, Rajasthan, Karnataka Issue raised • Earlier CPI undercaptured service and non-food inflation • Aggregated service head reduced price visibility • State-level consumption differences not fully reflected • Need to separate food volatility from persistent service inflation Current context • Inflation measured year-on-year; CPI reflects price level vs base year • Based on updated Household Consumption Expenditure Survey data • Services-intensive States showing higher inflation • Data sourced from MoSPI Why it matters • Clearer signal of service-driven inflation • Better identification of persistent price pressures • Key input for RBI’s interest-rate decisions • Improved State-level inflation assessment

@CSEWhy Newspaper Recos

Indian Express 🗞 1. Whole explained section. (All articles are important read) 2. SC ruling on use of stem cells for autism sets a precedent for healthcare regulation. (Imp article for GS-3) The Hindu 📰 1. Complete Text and Context section. (All articles are decent read) 2. How proteins are being tweaked to be quantum sensors inside the body. (Imp article for S&T)

https://docs.google.com/document/d/1kBVjmD8YP4nsSNigZd1V7LLSfT7KkwIOCHZf1hB92Js/edit?usp=sharing Compiled 5 prompts from my viral X thread in a single place. Download this as a PDF and use the prompts.

@CSEWhy Times - Feb 22, 2026

Pre & Mains Notes

1. Indigenous Td Vaccine under UIP What happened • Indigenously developed Tetanus–adult Diphtheria (Td) vaccine launched at CRI, Kasauli. • Introduced under Universal Immunization Programme (UIP); 55 lakh doses to be supplied initially. Issue raised • Strengthening national health security through domestic vaccine production. • Upgradation of public sector units under GMP standards. Current context • India highlighted as major global vaccine manufacturer. • UIP provides 11 vaccines against 12 diseases. Why it matters • Boosts self-reliance in immunisation. • Strengthens public health infrastructure. --- 2. India–Brazil Critical Minerals & Trade Cooperation What happened • Agreements signed on rare earths, critical minerals and steel mining. • Plan to raise bilateral trade to $30 billion by 2030; digital partnership action plan launched. Issue raised • Dependence on concentrated critical mineral supply chains. • Trade uncertainty amid U.S. tariff measures. Current context • U.S. imposed 50% tariffs on India and Brazil in 2025. • Expanded cooperation in defence, energy, healthcare and agriculture. Why it matters • Diversifies mineral supply chains. • Strengthens Global South economic partnership. --- 3. AI Impact Summit & New Delhi Declaration What happened • 88 countries signed New Delhi Declaration at AI Impact Summit, New Delhi. • $250 billion investment commitments; $20 billion for frontier deep tech. • Launch of domestically trained LLM by Sarvam AI. Issue raised • Democratic diffusion of AI and inclusion of under-represented languages. • Ensuring safe and trusted AI systems. Current context • Declaration voluntary and non-binding. • Initiatives include Global AI Impact Commons and AI Workforce Development Playbook. Why it matters • Positions India in global AI governance. • Promotes AI-driven economic and social development. --- 4. Early-Maturing Wheat Varieties in Kashmir What happened • SKUAST-K developed Shalimar Wheat-3 and Shalimar Wheat-4. • Early maturity (late May–early June) aligns with paddy transplantation. Issue raised • Late-maturing wheat disrupted rice-wheat rotation. • Yellow rust disease affecting yields. Current context • Developed through conventional breeding and multi-site trials. • Resistant to yellow rust; SW-3 biofortified with iron and zinc. Why it matters • Ensures timely crop cycle and food security. • Enhances disease resistance and farmer resilience.

@CSEWhy Newspaper Recos

Indian Express 🗞 None today The Hindu 📰 1. Why has eastern Nagaland got autonomy? (Decent article to read) 2. The curious case of the star that may have swallowed itself. (Important article for S&T) 3. Deal in deep water - Chagos Islands. (Read it for understanding geopolitics)

@CSEWhy Times - Feb 21, 2026

Pre & Mains Notes

1. IIT-M Blood Clotting Measurement Technique What happened • IIT-Madras patented an optics-based method to measure blood clotting time on implant surfaces • Technique tracks change in reflected light; triggers voltage shift in photodetector Issue raised • Existing clot-testing methods lack precision • Ongoing challenge of thrombosis in biomedical devices • Need for accurate haemocompatibility testing Current context • Surface turbidity during clotting alters reflectivity • Voltage change corresponds to clotting time (measured in milliseconds) • Industry discussions for material screening; potential use in water purity testing Why it matters • Enables quantitative screening of implant materials • May reduce clot-related patient risks • Supports better post-surgery anticoagulation planning --- 2. US–Iran Tensions and Oil Supply What happened • Oil prices hit six-month high amid US–Iran tensions • Brent crude crossed $71 per barrel Issue raised • Risk of disruption via Strait of Hormuz • Exposure of major importers like India to price rise Current context • Strait handles ~20% of global petroleum and LNG trade • ~40% of India’s crude imports pass through it • $1 price rise may raise India’s annual import bill by ~$2 billion • Alternative Gulf pipelines have limited capacity Why it matters • Energy security concerns for India • Higher import bill and macroeconomic pressure • Strategic importance of Strait of Hormuz in global oil trade

@CSEWhy Newspaper Recos

Indian Express 🗞 1. 94.5% survival in childhood cancer, says study; flags late risks. (Important article on health) 2. With Pax Silica, India gets a seat at the table. (A nice editorial to read about current events) The Hindu 📰 1. ‘As dynamic economies, India, Brazil can’t remain distant’. (Important article for GS-2,IR)

These lowkey maps from Newspapers gives you extra marks in exam, Some pointers from map Indira Point • Southernmost tip of India (Great Nicobar). • Near Six Degree Channel (strategic sea route). • Subsided after 2004 tsunami. Galathea Bay • SE coast of Great Nicobar. • Leatherback turtle nesting site. • Proposed transshipment port site. Campbell Bay National Park • North Great Nicobar. • Part of Great Nicobar Biosphere Reserve. • Tropical evergreen forests. Galathea National Park • South Great Nicobar. • Part of Biosphere Reserve. • Mangroves & turtle habitat. Save this for #UPSCPRELIMS2026

Friends, I am ready to launch my AI FOR UPSC Aspirants course It's to help you with both: - AI in UPSC Prep - To upskill and make money on the side with UPSC Prep Opening a wait list form to help you be early adopter Fill this form if you'd want to sign up for the course with 'Early Bird' Discount Link to form: https://forms.gle/hGx34mCDqExC23za9

@CSEWhy Times - Feb 20, 2026

Pre & Mains Notes

1. ISRO fire-detection algorithm What happened • ISRO to test modified algorithm for monitoring farm fires during rabi (wheat) harvest • Pilot to assess improved accuracy in fire detection Issue raised • Satellite data not accurately capturing number and extent of farm fires • Peak burning time shift leading to under-detection • Mismatch between satellite imagery and ground reports Current context • CAQM extended farm fire monitoring to rabi season • 2023 wheat season: 10,207 fires (Punjab), 1,832 (Haryana), 259 (UP-NCR) • Fire data based on Terra/Aqua MODIS and Suomi-NPP VIIRS • States directed to implement Action Plans for wheat stubble elimination (2026) Why it matters • Stubble burning linked to seasonal PM2.5 spike in Delhi-NCR • Better detection strengthens enforcement and air pollution control • Enhances tech-based environmental governance --- 2. Gold demand and economy What happened • Gold ETF inflows reached record 15.52 tonnes in Jan 2026 • Inflows ₹4,040 crore; 22% of gold imports • Gold imports pushed goods trade deficit near $35 billion Issue raised • Rising gold investments increasing import dependence • Pressure on trade deficit and capital outflow concerns Current context • Shift in household savings toward mutual funds and ETFs • Silver ETFs formed 52% of silver imports • Sovereign Gold Bond scheme discontinued in 2024 Why it matters • Gold imports impact current account balance • Household savings patterns affect macroeconomic stability • Policy implications for gold monetisation and external sector management

@CSEWhy Newspaper Recos

Indian Express 🗞 None today The Hindu 📰 1. How do graphics processing units work? (Read this article for basic context only) 2. Sleep deprivation and the toll it takes on your brain, body. (V.Important article to read) 3. Why begin-early mantra is a key prevention strategy in dentistry. (Read this for awareness)

I have spent decent time at AI summit (going again tomorrow) and everyone I have met speaks about how distribution is now the only moat, code/engineering resources are reducing on the balance sheet I had some realizations: - I started CSEWhy as a random side gig as an aspirant. Now an audience of 4 lac+ across internet - Whatever I want to test (any tech product), it barely takes 24 hour to have first 1000+ testers - On this journey, I had 3 events where I could have walked away with a lot of money by selling what we now call 'distribution' Idk what in me kept saying no but with AI, I am certainly glad I did not! There's so much more to do with audience in any niche than JUST money. Time to build great products with strong ethics for UPSC aspirants. Let's all win, together.

Friends, the annual CA Magazines of CSEWhy (subject-wise) are coming soon In last 2 years, these have helped many rankers. Why, you ask? • concise (as against bulky compilations) • in sync with PYQs • most comprehensive • picks notes ONLY in sync with UPSC Pre requirements Must get these, coming soon! :)

@CSEWhy Times - Feb 19, 2026

Pre & Mains Notes

NA

@CSEWhy Newspaper Recos

Indian Express 🗞 1. Nicobar project’s strategic & ecological consequences. (Important read for GS-2 and GS-3) 2. When SC reviews 2018 Sabarimala ruling, the issues on the table. (A good read for GS-2) 3. Maharashtra’s 5% Muslim quota: Legally greenlit, never availed of. (Just basic read for awareness) The Hindu 📰 1. New rootstocks promise better apple yields for Kashmir farms. (Just skim through it for basic contextual understanding) 2. The need for diversity in the judiciary. (Beautifully written article) 3. Are Indian firms intent on moving to Venezuelan oil?. (Read it for understanding the current developments)

Everyone is sharing this #IndiaAIImpactSummit2026 logo, But do you know what it actually represents?👀

@CSEWhy Times - Feb 18, 2026

Pre & Mains Notes

1. DPDP Act, RTI Amendment & Press Freedom - SC Constitutional Review What happened • Three PILs challenge constitutionality of the Digital Personal Data Protection (DPDP) Act, 2023 in Supreme Court • Filed by NCPRI, Venkatesh Nayak, and The Reporters’ Collective • SC referred matter to five-judge Constitution Bench; no interim stay Issue raised • Section 44(3) amends RTI Act Section 8(1)(j), removing public interest override for personal information • Alleged violation of proportionality test (Puttaswamy, 2017) • Journalists may be treated as “data fiduciaries” requiring consent • Section 36 allows Centre to seek data; termed vague and unchecked • Concerns over independence of Data Protection Board Current context • Earlier RTI allowed disclosure if larger public interest justified • DPDP Act prescribes penalties up to ₹250 crore • Data Protection Board to enforce Act; no appellate review against Centre’s orders cited Why it matters • Impact on RTI framework and investigative journalism • Possible chilling effect due to compliance burden and penalties • Expands executive data-access powers • Raises issues of privacy–transparency balance and institutional autonomy

@CSEWhy Newspaper Recos

Indian Express 🗞 1. Delhi and Paris reach out across traditional divides, advocate third way. (A must read for IR) The Hindu 📰 1. The new world disorder, from rules to might. (Read this article slowly) 2. Taxes prove futile to burn out cigarette use in India. (Important read especially for Mains)

@CSEWhy Times - Feb 17, 2026

Pre & Mains Notes

1. SC affirms women’s choice, reproductive autonomy What happened • Supreme Court allowed a teenager to terminate a 30-week pregnancy, setting aside Bombay High Court order • Rejected a 2023 plea of a 27-year-old married woman for 26-week termination Issue raised • Scope of late-term abortion under Medical Termination of Pregnancy (MTP) Act, 2021 • Consideration of mental health and “danger to health” • Differential outcomes based on age and marital status Current context • MTP Act permits abortion up to 24 weeks under conditions • Court prioritised minor’s unwillingness and mental trauma • Earlier 2023 case of married woman was denied Why it matters • Reinforces reproductive autonomy • Recognises mental health in abortion decisions • Highlights inconsistency in judicial approach --- 2. AI-powered Bharat-VISTAAR launch What happened • Centre to launch Bharat-VISTAAR, an AI-based multilingual agri advisory tool • Announced in Union Budget 2026-27 with ₹150 crore allocation Issue raised • AI-enabled scheme access and advisory services • Multilingual digital outreach to farmers Current context • Accessible via mobile and 155261 helpline • Covers crop planning, pests, weather, markets, and 10 major Central schemes • Initially in Hindi and English; 24×7 availability Why it matters • Strengthens tech-driven agricultural governance • Improves last-mile scheme delivery • Promotes inclusive digital access --- 3. NGT clears Great Nicobar project What happened • NGT cleared ₹92,000-crore Great Nicobar mega project • Upheld 2022 environmental clearance; disposed of challenges Issue raised • Compliance with EC conditions • Coral reefs, shoreline erosion, turtle nesting protection • Scope of High-Powered Committee (HPC) review and EIA concerns • Forest clearance and local consent issues Current context • Project includes port, airport, power plant, township • Environment Ministry directed to ensure safeguards • Forest clearance under challenge before Calcutta High Court Why it matters • Balances strategic development and environmental safeguards • Highlights NGT’s role in environmental governance • Raises concerns on ecology and community rights

@CSEWhy Newspaper Recos

Indian Express 🗞 1. Bhabha, Cold War, nuclear technology, 1955: Dos and don’ts for India in AI. (Beautifully written article) 2. Whole explained section. (All articles are important) The Hindu 📰 1. A separate classification for denotified tribes. (A decent read for mains) 2. How district cooling can ease India’s climate and urban planning troubles. (Important article for GS-3, Evnironment)

@CSEWhy Times - Feb 16, 2026

Pre & Mains Notes

1. ‘Anupam’ waste management model What happened • NDMC piloted decentralised waste management in six ‘Anupam’ colonies • Source segregation into wet, dry, sanitary waste • Wet and horticulture waste composted on-site; e-waste to CPCB-authorised recyclers • Dedicated sanitation inspectors and mechanised systems deployed Issue raised • Earlier segregation limited to 60–70% • Mixed waste and need for behavioural change • Need to avoid transport to NDMC plants Current context • 100% segregation reported in select colonies • RWA/NGO-led door-to-door collection in some areas • 13 wire-mesh composters, 10 horticulture pits; ~800 kg compost produced Why it matters • Promotes decentralised solid waste management • Reduces transport burden and centralised processing • Strengthens local governance and sustainable urban practices --- 2. Bio-based chemicals and enzymes What happened • Bio-based chemicals and enzymes prioritised under DBT’s BioE3 policy • Produced from biological feedstocks via fermentation/enzymatic processes • Leading firms: Praj Industries, Godrej Industries, Godavari Biorefineries, Jubilant Ingrevia • Enzyme market highly consolidated (top players >75% share) Issue raised • Higher cost vs petrochemical alternatives • Feedstock availability and scaling infrastructure • Market adoption and private investment barriers Current context • Strong agricultural base and fermentation expertise • Significant acetic acid imports • EU, U.S., China, Japan supporting bioeconomy initiatives Why it matters • Reduces petrochemical import dependence • Supports circular bioeconomy and sustainable growth • Creates value for agricultural produce

@CSEWhy Newspaper Recos

Indian Express 🗞 1. Trade pact opens doors with caution, and with quota systems, in agriculture. (Important article related to agriculture) The Hindu 📰 NA

Great energy at AI Summit Literally so much is happening in our country. UPSC aspirants MUST NOT skip AI, at any cost Upskill and make great side income 💯

Cricket ads are best indicator of where tech investors are putting money Over the years we’ve seen • Crypto • Ed-tech • Betting apps • AI What did I miss?

@CSEWhy Times - Feb 15, 2026

Pre & Mains Notes

1. AI Labelling & Social Media Rules What happened • IT (Intermediary Guidelines and Digital Media Ethics Code) Amendment Rules, 2025 notified • Mandatory labelling of “synthetically generated” content/deepfakes • Takedown timeline reduced (72 hrs → 36 hrs for sensitive content) • Effective from February 20 Issue raised • Misinformation, privacy harm, threat to national integrity • Compliance burden and detection feasibility Current context • Platforms to deploy technical measures for AI-content detection • Provenance requirements introduced; reference to C2PA participation • Enhanced grievance reporting frequency Why it matters • Strengthens intermediary accountability • Addresses deepfake and AI misuse risks • Improves user protection framework --- 2. Inhaled Nitric Oxide & Drug-Resistant Pneumonia What happened • Study in Science Translational Medicine: high-dose inhaled nitric oxide reduced drug-resistant Pseudomonas in animal ICU model • Phase-1 human trial showed no serious adverse effects Issue raised • Safety concerns: toxicity, methemoglobinemia, nitrogen dioxide formation • Feasibility in hospital settings Current context • 300 ppm doses tested; 99% bacterial reduction in animals • Experts caution long-term efficacy unproven Why it matters • Potential adjunct in antimicrobial resistance management • Raises safety and regulatory considerations --- 3. Indus vs Ganga Basin Water Trends What happened • Study (Earth’s Future): Indus flow +8%; Ganga flow –17% (1980–2021) • IIT Gandhinagar analysis Issue raised • Groundwater over-extraction impacting river flows • Aquifer–river flow reversal in stretches Current context • Indus rise linked to precipitation increase • 60–80% Ganga sub-basin decline tied to groundwater pumping • Relevance to Indus Waters Treaty (1960) Why it matters • Implications for water security and irrigation • Highlights climate change and human extraction impacts --- 4. RBI Lending Norms for Stockbrokers What happened • RBI mandates 100% collateral for bank lending to CMIs • Norms effective April 1 Issue raised • Bank risk exposure in capital market financing • Collateral adequacy concerns Current context • Eligible collateral specified; CPs/short-term NCDs excluded • 50% cash collateral for certain guarantees • Acquisition finance cap set at 20% of tier-1 capital Why it matters • Strengthens banking prudential regulation • Reduces systemic risk in capital markets

@CSEWhy Newspaper Recos

Indian Express 🗞 1. Green light to first road-cum-rail tunnel under Brahmaputra river. (Read this for basic context of current news) The Hindu 📰 1. IIT-Delhi, Germany team makes ‘chiral valve’ to sort current. (Important S&T news)

@CSEWhy Times – Feb 14, 2026

Pre & Mains Notes

NA

@CSEWhy Newspaper Recos

Indian Express 🗞: none today The Hindu 📰: none today