UPSC CSE Why

Such micro maps are a blessing! Watch closely 🧐 • Location & order of hill ranges • Major rivers of NE & neighborhood All of this geography in context of Tropic of Cancer 🤯 Revise here

@CSEWhy Times – Dec 20, 2025

Pre & Mains Notes

1) The Night’s Watch of Laghat (Himachal Pradesh) What happened Women in Laghat village formed night patrol squads to counter the rising drug menace, especially chitta, affecting youth. Issue raised Rising NDPS cases in Himachal and deep penetration of synthetic drugs into rural areas. Current context Laghat falls under one of the most drug-affected panchayats in Bilaspur district. NDPS cases peaked sharply post-2022. Why it matters (UPSC angle) * Community-led policing * Role of women in internal security * NDPS Act enforcement gaps in hill states 2) Behind Rupee’s Weakness Against the Dollar What happened The rupee continues to weaken against the dollar despite RBI interventions in the forex market. Issue raised Structural trade deficit and limits of RBI’s spot market intervention. Current context Dollar strength, high US interest rates, capital outflows, and rising import costs pressure the rupee. Why it matters (UPSC angle) * Exchange rate management * RBI tools: spot vs forward intervention * Impact on inflation and imports

@CSEWhy Newspaper Recos

Indian Express🗞 1. New job law isn't retreat from social protection. It aims to reform! (Word from horse's mouth: Minister Shivraj Singh) 2. How India is overhauling its nuclear power engine (GS3 Energy & GS2 Policy) The Hindu 📰 1. The significance of a strong defence industrial base (MUST read)

This single image answers 3 most important cyclone questions. Happy reading😊

Formation of Major Political Parties in India in chronological order. This table will help you in the exam, Save and revise it multiple times😊

@CSEWhy Times – Dec 18, 2025

Pre & Mains Notes

not much in the paper today

@CSEWhy Newspaper Recos

Indian Express🗞 1. Entire EXPLAINED page The Hindu 📰 1. The changing patterns of India’s student migration 2. How is the Aravalli range to be protected?

This side of an UPSC aspirant’s life hardly anyone talks about🙁

Rupee breaches all-time low, Rupee crosses 91 against the dollar. Read impacts of falling Rupee, V. Important for UPSC. Save this as this can become handy for exam.😊

@CSEWhy Times – Dec 17, 2025

Pre & Mains Notes

@CSEWhy Newspaper Recos

Indian Express🗞 1. At 100, Indian Communism has an unfinished business, too early to write its obituary (raja mandal - wednesday must reads) 2. Entire IDEAS page The Hindu 📰 1. India and the US: 2005 vs 2025 (read for basic awareness) 2. The future of governance in post-Maoist India (delightful read)

1. Inhalable microplastics worsening urban air Issue raised Air pollution assessment has largely ignored inhalable microplastics despite growing evidence of health risks. Current context A study found high concentrations of microplastics in urban air of Indian cities like Kolkata and Delhi. Why it matters Microplastics can carry heavy metals and toxic chemicals deep into lungs, increasing chronic disease risks. Key findings Particles smaller than 10 micrometres penetrate respiratory system Urban sources include tyre wear, plastic waste, construction dust Winter inversion worsens exposure Implications Adds a new dimension to air quality governance Challenges current PM2.5 focused regulatory approach 2. Wisdom teeth as an evolutionary relic Issue raised Why humans still develop wisdom teeth despite frequent dental problems. Current context Evolutionary explanation links wisdom teeth to dietary and jaw size changes. Scientific explanation Early humans needed extra molars for coarse diets Modern cooking reduced jaw size but tooth pattern remained Why problematic today Jaw space insufficient leading to impaction and pain Example of evolutionary mismatch Relevance Useful for evolution, biology, and human adaptation questions 3. Lab grown food and 3D printing technology Issue raised Can alternative food technologies address nutrition and sustainability challenges. Current context Italian researchers are developing lab grown plant based snacks using 3D printing. Technology involved Plant cells and fruit residues converted into printable food material High nutritional density with minimal waste Why important Reduces pressure on agriculture Supports future food security and climate goals UPSC angle Links science innovation with sustainable development goals 4. Noida penalises Blinkit cloud kitchen Issue raised Violation of solid and liquid waste management rules by gig economy platforms. Current context Noida Authority fined Blinkit Rs 5 lakh for improper waste handling. Violations noted Non segregation of waste Improper disposal of liquid waste Use of banned single use plastics Governance concern Urban local bodies enforcing environmental compliance Regulatory gaps in cloud kitchen sector Prelims angle Solid Waste Management Rules Urban governance and municipal powers 5. Enduring popularity of Jane Austen Issue raised Why Jane Austen remains culturally relevant 250 years after her birth. Current context Renewed global interest through films, TV adaptations, and academic discourse. Key themes Women’s agency Social class and marriage Moral reasoning and realism Why enduring Simple language with deep social insight Adaptable across cultures and generations Culture angle Literature as soft power Cultural continuity and reinterpretation

@CSEWhy Times – Dec 16, 2025

Pre & Mains Notes

@CSEWhy Newspaper Recos

Indian Express🗞 1. 20 yrs on, a radical revamp of the rural jobs framework (on G-RAM-G Scheme) 2. Australia shored up gun laws after '96 tragedy. It faces a fresh reckoning (gun laws in age of lone wolf terror attacks) The Hindu 📰 1. The Oman visit is more than a routine diplomatic trip (GS2-IR) 2. Why were IndiGo operations disrupted? (read for awareness)

1. Suncatcher: Google moonshot to move data centres to space What happened * Google announced Project *Suncatcher*, a long-term research initiative to explore solar-powered data centres in space by 2027. Issue raised * Rising energy, water and climate costs of terrestrial data centres powering AI and cloud computing. Current context * Data centres face criticism for fossil fuel dependence, water depletion and vulnerability to outages and disasters. * Advances in rockets, satellite tech and space computing have reduced launch and experimentation costs. Way forward / Why it matters * Space-based data centres could offer constant solar energy and data sovereignty advantages. * Challenges include latency, cybersecurity, maintenance, costs and Outer Space Treaty constraints. 2. N-power Bill introduced; permits private operators, limits supplier liability What happened * Government introduced the Nuclear Power Bill in Lok Sabha to allow private participation in nuclear power and cap supplier liability. Issue raised * Existing Civil Liability for Nuclear Damage Act discouraged private and foreign investment due to high supplier liability. Current context * India aims to expand nuclear energy for clean baseload power to meet climate and energy security goals. * Small Modular Reactors and advanced nuclear technologies require private sector involvement. Way forward / Why it matters * Bill aligns India with global nuclear liability norms. * Raises concerns on safety, accountability and public trust in nuclear expansion. 3. Does India need to upgrade its biosecurity measures? What happened * Experts flagged gaps in India’s biosecurity framework amid rapid advances in biotechnology. Issue raised * Existing systems focus more on biosafety than preventing deliberate misuse of biological agents. Current context * India is signatory to the Biological Weapons Convention. * Increased access to biotech tools raises risks from non-state actors, lab leaks and bio-terrorism. Way forward / Why it matters * Need for unified national biosecurity framework integrating health, agriculture, environment and security. * Strong biosecurity is critical for public health, livestock safety and national security.

@CSEWhy Times – Dec 16, 2025

Pre & Mains Notes

@CSEWhy Newspaper Recos

Indian Express🗞 1. 20 yrs on, a radical revamp of the rural jobs framework (on G-RAM-G Scheme) 2. Australia shored up gun laws after '96 tragedy. It faces a fresh reckoning (gun laws in age of lone wolf terror attacks) The Hindu 📰 1. The Oman visit is more than a routine diplomatic trip (GS2-IR) 2. Why were IndiGo operations disrupted? (read for awareness)

1. AI tool helping Maharashtra Police solve crime What happened • Maharashtra Police launched MahaCrimeOS AI developed with Microsoft to assist criminal investigations across police stations. Issue raised • Manual investigation delays in cybercrime, financial fraud, narcotics and complex crimes. Current context • MahaCrimeOS uses AI to analyse FIRs, telecom data and open source intelligence. • Generates investigation plans aligned with Supreme Court and High Court guidelines. • Part of MARVEL initiative under state Microsoft collaboration. • Falls under AI in governance and policing reforms. 2. Karnataka Bill to tackle hate speech What happened • Karnataka government tabled the Karnataka Hate Speech and Hate Crimes Prevention Bill, 2025. Issue raised • Expansive definition of hate speech and concerns over misuse affecting free speech. Current context • Bill expands hate speech beyond existing IPC provisions. • Provides stronger punishments and wider takedown powers. • Raises constitutional concerns under Article 19. • Similar debates earlier seen with sedition and IT Rules. 3. EU fines Elon Musk’s X platform What happened • European Commission fined X 140 million dollars under the Digital Services Act. Issue raised • Failure to meet transparency, accountability and misinformation control obligations. Current context • First major DSA penalty against a large tech platform. • Focus on blue tick verification misleading users. • Sets precedent for Big Tech regulation globally. • Relevant for digital governance and platform accountability. 4. Lunacrete concrete for the Moon What happened • Scientists developed lunar concrete using moon regolith for future lunar habitats. Issue raised • Conventional cement requires water which is scarce on the Moon. Current context • Lunacrete uses regolith with sulphur or microwave heating. • Can withstand extreme lunar temperatures. • Important for long term lunar missions by US and China. • Part of space habitation and extraterrestrial infrastructure. 5. Big Shot Nubian ibexes in Negev desert What happened • Photograph captured Nubian ibexes navigating steep rocky terrain in Israel’s Negev desert. Issue raised • Survival of desert species in fragile arid ecosystems. Current context • Nubian ibex is adapted to extreme desert environments. • Highlights biodiversity in West Asian deserts. • Relevant for conservation and climate adaptation studies.

@CSEWhy Times – Dec 15, 2025

Pre & Mains Notes

check next text

@CSEWhy Newspaper Recos

Indian Express🗞 1. From Brazil, a lesson on antibiotic use for India 2. Why lower LDL are recommended for Indians? 3. Indians are thin fat, must use Ozempic wisely 4. New Insurance Bill: Major reforms it seeks to bring (MUST READ) The Hindu 📰 1. Crossing a river into cyber slavery 2. The right moment to boost India-Ethiopia ties 3. Why are OBC lists in Bengal being scrutinised?

Note: this screenshot is from CSEWHY PYQ Notes There’s more to it covering every single question since 2009. You can get them in sale still for another 23 slots: CSEWhy.com/upsc

PYQ related to Volcanism with detailed explanation.

Revise with CSEWhy😊 Topic : Volcanism 1. Definition • Volcano: Opening releasing magma, gases and pyroclasts due to internal pressure. 2. Key Terms • Magma: Molten rock below • Lava: Molten rock on surface • Vent: Eruption pathway • Crater: Summit depression • Caldera: Large collapsed depression • Fissure: Linear crack • Pyroclasts: Solid ejecta • Hotspot: Stationary mantle plume • Volcanic gases: Water vapour, CO₂, sulphur compounds, nitrogen compounds 3. Types of Lava • Basaltic: Low silica, fluid, gentle • Andesitic: Medium silica, moderate • Rhyolitic: High silica, viscous, explosive 4. Volcano Types with Examples • Shield: Broad, basaltic. Example Mauna Loa • Composite: Layered, explosive. Example Mt Fuji • Cinder cone: Pyroclastic. Example Paricutin • Lava dome: Viscous dome. Example Mt Pelee dome • Fissure: Linear cracks. Example Deccan Traps • Caldera: Collapse. Example Yellowstone 5. Distribution • Ring of Fire about 75 percent of volcanoes • Divergent boundaries: Iceland • Convergent boundaries: Andes, Japan • Hotspots: Hawaii, Reunion 6. Some more facts • Deccan Traps are fissure flood basalts • Andesite forms at subduction zones • Hotspots remain fixed, plates move • Higher silica increases viscosity and explosiveness • Volcanic soils are highly fertile • Volcanoes emit sulphur dioxide and nitrogen oxides affecting climate • Sulphur aerosols cause short term global cooling • Most active volcanoes occur at convergent boundaries.