PMF IAS Science and Technology
https://indianexpress.com/article/health-wellness/fake-ors-food-regulator-hyderabad-doctor-fight-10313726/
🧴⚖️ Fake ORS Controversy: Public Health vs Misleading Marketing
📅 Background
• October 2025: The Food Safety and Standards Authority of India (FSSAI) banned the use of the term “ORS” (Oral Rehydration Solution) on any food or beverage not matching the WHO UNICEF approved formulation.
• This action followed an 8-year-long campaign by Dr Sivaranjani Santosh, a Hyderabad paediatrician, who exposed misleading “ORS” drinks being sold as medical-grade rehydration solutions.
💧 The Problem
• True ORS is a medical formulation used to replace lost water and electrolytes in diarrhoea.
• It must have precise proportions of:
🧂 Sodium chloride
⚡ Potassium chloride
🍬 Sodium citrate
🍚 Dextrose (glucose)
❌ Fake ORS / energy drinks contained:
• Excess sugar (up to 10x more) and very low electrolytes.
• This creates a hyperosmotic solution, pulling more water into the intestines instead of absorbing it — thus worsening dehydration and diarrhoea instead of curing it.
• In children, this can be life-threatening due to rapid fluid and sodium loss.
⚖️ Regulatory & Legal Developments
• 🧾 FSSAI Directive (Oct 2025): Banned any use of “ORS” in brand names, prefixes, or suffixes unless WHO standards are met.
• ⚖️ Delhi High Court (Oct 2025): Granted interim protection to JNTL Consumer Health (maker of “ORSL”), citing the need for due process before enforcement.
• This case reflects the balance between public health protection and commercial trademark rights.
🌍 Key Takeaways for UPSC Aspirants
1. Public Health Policy: Demonstrates how inaccurate food labelling can endanger lives
2. Governance & Activism: Shows how citizen-led efforts can influence national regulatory change.
3. Law & Ethics: Involves conflict between health safety and corporate branding rights.
4. Science & Medicine: True ORS must maintain osmotic balance; excess sugar without electrolytes exacerbates diarrhoea.
5. Essay / GS 4: Case study in ethical governance, persistence, and public interest advocacy.
❤5🔥1🏆1
PMF IAS Science and Technology
https://indianexpress.com/article/technology/science/space-junk-how-earths-orbit-became-a-floating-landfill-10332465/?ref=science_pg
SPACE JUNK (ORBITAL DEBRIS)
📘 Definition
• Space Junk / Orbital Debris = Non-functional, human-made objects orbiting Earth (🛰 defunct satellites, 🚀 rocket parts, 🔩 bolts, 🎨 paint flakes).
• Travels at ~28,000 km/h – even a 1 cm particle can destroy a satellite.
⚠️ Major Sources of Debris
🔹 Anti-Satellite (ASAT) Tests
• China (2007) → ~2,300 fragments.
• India’s Mission Shakti (2019) → temporary debris near ISS orbit.
🔹 Collisions & Explosions
• 2009: Iridium-33 vs Cosmos-2251 – first major satellite-to-satellite collision.
🔹 Defunct Satellites & Rocket Stages
• Many left in orbit without proper de-orbit plans.
🚨 Consequences
💥 Collision Threats – Destroys working satellites, ISS, and spacecraft.
♻️ Kessler Syndrome – Chain reaction of collisions → orbit becomes unusable.
📡 Service Disruptions – Impacts GPS, telecom, weather forecasting, and remote sensing.
💸 Economic Loss – Higher insurance, costlier launches, global coordination challenges.
🧭 Global & Indian Efforts
🌐 International Initiatives:
• UN COPUOS – Debris mitigation & post-mission disposal guidelines.
• IADC (Inter-Agency Space Debris Coordination Committee) – Data-sharing & best practices.
• ESA’s CleanSpace & Japan’s “Space-Sweeper” missions – Active debris removal projects.
🇮🇳 Indian Steps:
• ISRO’s NETRA – Space Situational Awareness program to track debris.
• Low-Debris Launch Vehicles & End-of-Life Disposal Systems.
• International Partnerships – Data exchange & debris-tracking cooperation.
🧠 Ethical & Governance Dimensions
🌍 Global Commons – Outer space is a shared domain → collective responsibility.
🧩 Intergenerational Equity – Keep orbits usable for future missions.
⚖️ Accountability Gap – No binding global treaty for debris clean-up.
🏢 Private Sector Role – SpaceX, OneWeb, Amazon Kuiper mega-constellations raise sustainability & collision concerns.
🌍 Key Takeaways for UPSC Aspirants
📚 GS Paper-3: Space tech, environment, disaster prevention in orbit
📚 GS Paper-2: Global cooperation, treaties, and space governance
📚 GS Paper-4: Ethics → responsibility, sustainability, intergenerational equity
📚 Essay: “The Final Frontier or the Next Landfill? Humanity’s Moral Dilemma in Space.”
📌 Conclusion
Earth’s orbit is turning into a floating landfill 🚮.
Future space activity demands responsible technology, stronger treaties, and ethical stewardship to keep space sustainable.
🪐 “Space exploration must go hand-in-hand with space preservation.” 🌌
❤4
PMF IAS Science and Technology
https://indianexpress.com/article/india/isro-bahubali-rocket-heaviest-satellite-orbit-10341981/
🚀🇮🇳 ISRO Creates History with “Bahubali” Rocket
India’s Heaviest Communication Satellite Launch – CMS-03
🛰️ Mission Highlights
📅 Launched: 2 Nov 2025
🚀 Launch Vehicle: LVM3-M5 (nicknamed “Bahubali”)
🛰️ Satellite: CMS-03 (Communication Satellite)
🌍 Orbit: Geosynchronous Transfer Orbit (GTO)
✨ What Makes The Mission Special
📌 The CMS-03 is India’s heaviest communication satellite launched from Indian soil.
📌 The LVM3-M5 was upgraded to lift heavier payloads – a boost to India’s heavy-lift launch capability.
📌 Mission strengthens India’s indigenous space launch autonomy, reducing its dependence on foreign rockets.
💡 About the LVM3-M5 (“Bahubali”) Rocket
🚀 India’s most powerful 3-stage heavy-lift launch vehicle
🔸Stage 1: Twin Solid Boosters (S200)
🔸Stage 2: Liquid Core Stage (L110)
🔸Stage 3: Cryogenic Upper Stage (C25)
🚀 Carries up to 4 t to GTO and 8 t to LEO
🚀 Built for launching heavy satellites & interplanetary missions (like Chandrayaan-2, OneWeb).
🚀 Nicknamed “Bahubali” for its sheer power & reliability.
🛰️ About CMS-03 Satellite
📡 Advanced multi-band communication satellite designed to enhance:
📶 Internet & telecom services across India
🌊 Maritime & aviation connectivity over the Indian Ocean Region (IOR)
🛡️ Strategic communication for defence & disaster management
📡 Replaces older communication satellites in the INSAT/GSAT series.
🌍 Key Takeaways for UPSC Aspirants
🎓 GS Paper-3 (Science & Technology): Launch vehicle design, communication satellites, geosynchronous orbits.
🎓 GS Paper-2 (International Relations & Security): Strategic independence, space diplomacy, India’s space launch capabilities in the global context.
🎓 GS Paper-4 (Ethics & Governance): Innovations in space tech, public investments vs national good, transparency in programmes.
🎓 Essay/General Awareness: “India’s ascent in space capability – shaping the future of connectivity and defence.”
❤3
PMF IAS Science and Technology
https://indianexpress.com/article/technology/science/international-space-station-set-to-be-retired-heres-what-nasa-is-going-to-do-about-it-10347451/?ref=science_pg
🚀 END OF AN ERA – ISS TO BE RETIRED BY 2030
📅 Background
• Launched: 1998 (Operational since 2000)
• Partners: 🇺🇸 NASA, 🇷🇺 Roscosmos, 🇪🇺 ESA, 🇯🇵 JAXA, 🇨🇦 CSA
• Purpose: Microgravity research, international cooperation, and long-term human presence in space.
• Orbit: ~400 km above Earth in Low Earth Orbit (LEO)
• Continuous human presence: Over 25 years, with >250 astronauts from 20+ nations.
⚠️ Why ISS is Being Retired
• Ageing infrastructure: Structural fatigue, pressure leaks, power & cooling issues.
• High maintenance costs: ~$3–4 billion/year (mainly borne by NASA).
• Safety & sustainability: Rising risk of failure or debris creation.
• Strategic shift: NASA and partners want to focus on deep-space missions (e.g., Artemis, Lunar Gateway).
🚀 The Retirement Plan
• Timeline: Gradual phase-out → complete decommissioning by 2030.
• Controlled deorbit: ISS will be guided to a remote Pacific Ocean zone (“Point Nemo”) – most debris will burn up in the atmosphere; the remainder will sink into the ocean.
• After 2030: Transition to commercial space stations operated by private players under NASA’s Commercial LEO Destinations (CLD) program.
🧭 What Comes Next
🌐 NASA’s New Strategy:
• No new government-owned ISS replacement.
• Shift to Public-Private Partnerships (PPP) — NASA as a customer, not owner.
• Companies involved:
Axiom Space → Building modules that will detach into a private station.
Blue Origin (“Orbital Reef”), Voyager Space (“Starlab”), and Sierra Space → developing commercial stations.
• Goal: Maintain U.S. presence in LEO while freeing funds for Moon & Mars exploration.
🌍 Global Implications
• End of a symbol of post–Cold War cooperation between the USA & Russia.
• Opens opportunities for emerging space nations (like India) to collaborate on new orbital labs.
🧠 Key Takeaways for UPSC Aspirants
📚 GS Paper-3 (Science & Technology): Human spaceflight infrastructure, research in microgravity, orbital platforms.
📚 GS Paper-2 (International Relations): Global cooperation in ISS (USA, Russia, Europe, Japan, Canada); transition to commercial models signals shift in space policy.
📚 GS Paper-4 (Ethics & Governance): Use of public-private partnerships in space, inter-generational responsibility for orbital assets, managing space-heritage.
📚 Essay Angle: “From public space outpost to commercial low-earth platforms: the evolution of human presence in orbit.”
❤5
PMF IAS Science and Technology
https://www.livemint.com/news/india/what-is-gps-spoofing-after-800-flight-disruptions-at-delhi-airport-is-it-time-for-atc-overhaul-11762591122901.html
🛰️⚠️ GPS Spoofing: Cyber Threat to Aviation & National Security
📍 What is GPS Spoofing?
• GPS spoofing is a cyber-attack technique where false GPS signals are transmitted to mislead receivers (like aircraft, ships, or phones) about their actual location, speed, or time.
• Unlike GPS jamming (which blocks signals), spoofing feeds fake but realistic navigation data — tricking systems into following incorrect coordinates.
🧠 Think of it as a “deepfake for navigation data.”
✈️ Recent Case: Delhi Airport Disruption (Nov 2025)
• Over 800 flights delayed/diverted at Delhi’s IGI Airport due to GPS spoofing incidents.
• Aircraft receiving fake position signals faced difficulty using GPS-based landing systems (Required Navigation Performance).
• Detected up to 60 nautical miles from IGIA – 🚨 First Large-Scale Aviation Spoofing Event in India 🚨
• Coincided with easterly wind operations (reverse runway use), adding to congestion.
⚙️ Impact of GPS Spoofing
🚨 Aviation Safety Risk: Aircraft may stray off path → risk of runway deviation or near-miss.
🛰️ Navigation Disruption: Misleads ATC and pilots relying on satellite navigation.
🧱 Infrastructure Vulnerability: Airports, ports, and drones using GNSS (GPS, GLONASS, Galileo, NavIC) become potential targets.
🛡️ National Security Angle: Can be exploited for espionage, sabotage, or warfare.
🛠️ Countermeasures & Policy Response
📍DGCA Action: Ordered immediate review and upgrade of Instrument Landing Systems (ILS) at IGIA.
📍Airlines Advisory: Pilots to cross-verify GPS with alternative navigation aids (VOR/DME/ILS) and report anomalies.
📍Long-term Needs:
1. Cyber-hardening of Air Traffic Control (ATC) networks.
2. Integration of NavIC (India’s own satellite navigation) for redundancy.
3. AI-based spoofing detection & signal authentication.
4. International cooperation under the International Civil Aviation Organisation (ICAO) for anti-spoofing protocols.
🌍 Key Takeaways for UPSC Aspirants
📚 GS Paper-3: Cybersecurity, critical infrastructure, aviation technology
📚 GS Paper-2: Emphasises the interplay between civil aviation safety (DGCA), international aviation norms (ICAO) and national security
📚 GS Paper-4: Raises ethical governance questions – preparedness, resilience, risk mitigation in critical infrastructure
📚 Essay: “Invisible threats in a connected world: Cyber risks in air and space”
“When GPS signals become weapons – safeguarding civil aviation in the digital age”
❤2
PMF IAS Science and Technology
https://indianexpress.com/article/cities/delhi/red-fort-blast-case-why-investigators-are-tracking-ammonium-nitrate-link-between-delhi-blast-and-faridabad-haul-10362059/
💣 AMMONIUM NITRATE – The Fertiliser That Can Turn into a Bomb
🏙️ In News: Red Fort Blast (Nov 2025)
• Investigators found traces of ammonium nitrate–based explosives in the Delhi Red Fort car blast.
• Linked to a 350 kg ammonium nitrate haul seized in Faridabad.
• Shows how easily a fertiliser supply chain can be misused for terror manufacturing.
⚗️ What It Is
• Ammonium Nitrate (NH₄NO₃) – a common fertiliser providing nitrogen to crops 🌾
• White crystalline solid — stable alone, but when mixed with fuel, it becomes explosively unstable.
🧪 Mix it with fuel oil (diesel, kerosene) → you get ANFO (Ammonium Nitrate Fuel Oil) — a cheap, powerful explosive used in mining… and sadly, in terror attacks too.
🔹 Remember: Stable Alone, Deadly Together →Ammonium Nitrate + Fuel Oil + Detonator = ANFO Explosion 💥
💥 Why It’s Dangerous
• Acts as an oxidiser — supplies oxygen for rapid combustion.
• When contaminated or confined → violent detonation with temperatures >2,500 °C.
• Shock-waves + gas expansion → massive blast radius (e.g., Beirut 2020 explosion 🔥).
⚠️ 1 tonne of ANFO = equivalent to hundreds of kilograms of TNT!
🏛️ Regulation in India
• Governed by Ammonium Nitrate Rules, 2012 under the Explosives Act, 1884.
• Supervised by PESO (Petroleum and Explosives Safety Organisation).
• Storage, sale, and transport require strict licensing.
• Still, illegal diversion & smuggling remain challenges.
🌍 Key Takeaways for UPSC Aspirants
• GS Paper-3 (Internal Security/Science & Tech): Recognise how chemical substances (fertiliser-chemicals) become dual-use threats.
• GS Paper-2 (Governance & Policy): Importance of regulatory regimes (PESO/DM/NIA), forensic linkage, intelligence and supply-chain control.
• GS Paper-4 (Ethics & Public Safety): Responsibility of states in ensuring that common chemicals do not become weapons, balancing agricultural needs & security.
• Essay: “When science meant for life becomes a tool of destruction”.
❤10
PMF IAS Science and Technology
https://indianexpress.com/article/explained/explained-sci-tech/study-uranium-breast-milk-findings-experts-validity-10385428/
🍼☢️ URANIUM FOUND IN BREAST MILK?
A recent scientific study has triggered national debate after detecting traces of Uranium (U-238) in breast-milk samples from districts in Bihar. But what does this really mean?
🔎 What the Study Found
• Uranium detected in all samples tested (across 6 districts).
• Levels ranged up to ~5 µg/L — NOT immediately toxic, but worth investigating.
• ~70% infants had a “Hazard Quotient” > 1 → possible long-term risk if exposure continues.
💡 Should Mothers Stop Breastfeeding?
❌ NO.
Experts clarify:
• Uranium in these amounts is below many international water safety thresholds.
• Uranium does NOT accumulate significantly in breast milk.
• Breastfeeding remains far safer and healthier than alternatives.
✔️ Issue to fix = environmental contamination, NOT breastfeeding.
🧬 Why Uranium is a Concern
• Uranium = heavy metal, not just radioactive material.
• Chronic exposure may affect:
o ⚠️ Kidney function
o ⚠️ Bone & neurological development (infants are more vulnerable)
• Source suspicion: groundwater contamination from natural geology or human activities.
🌍 Why This Matters for India
This case highlights the Environment → Water → Human Health chain:
• Contaminated groundwater → enters household water → enters mother’s body → appears in breast milk.
• Echoes past issues with arsenic & fluoride in Indian groundwater.
🏛️ UPSC Takeaways
GS-3 (Environment & Health): Heavy-metal contamination, Public health surveillance, and Drinking water safety under Jal Jeevan Mission
GS-2 (Governance): Need for stronger water-quality monitoring
Ethics / Essay: “Environmental neglect burdens the most vulnerable – even infants.”
❤4
Forwarded from PMF IAS Official (PMF IAS)
The exact schedule of Science and Technology will be this:
1) Hardcopy by the 25th of March
2) Chapter-wise PDFs starting from March 1st on live.pmfias.com (1 Chapter every day; total 32 chapters)
2) Full PDF by the 31st of March (live.pmfias.com)
The delay in Science and Technology is mostly due to quality enhancement. It's a tough dynamic subject with unending syllabus.
1) Hardcopy by the 25th of March
2) Chapter-wise PDFs starting from March 1st on live.pmfias.com (1 Chapter every day; total 32 chapters)
2) Full PDF by the 31st of March (live.pmfias.com)
The delay in Science and Technology is mostly due to quality enhancement. It's a tough dynamic subject with unending syllabus.
❤10
Forwarded from PMF IAS Official (PMF IAS)
PMF IAS Science and Technology 1st Edition Full PDF is now available for Purchase/Download.
Purchase/Download link: https://live.pmfias.com/new-courses/65
Contents and Sample: https://drive.google.com/sample
Purchase/Download link: https://live.pmfias.com/new-courses/65
Contents and Sample: https://drive.google.com/sample
❤4
🚀 S&T REVISION SERIES FOR PRELIMS 2026 BEGINS TODAY
From today onwards, we begin a structured revision of Science & Technology for UPSC CSE Prelims 2026.
🎯 This series will help you:
✔ Revise important current affairs-linked topics
✔ Identify which sections of the PMF IAS S&T book to focus on more
✔ Avoid reading the book randomly and instead cover it strategically
📘 How to use this series:
👉 Follow daily posts
👉 Revise the mentioned sections from the book
👉 Solve MCQs and track your understanding
⚠️ Remember:
This is NOT about reading everything.
This is about smart revision + right focus areas.
Let’s begin. Stay consistent. 💪
From today onwards, we begin a structured revision of Science & Technology for UPSC CSE Prelims 2026.
🎯 This series will help you:
✔ Revise important current affairs-linked topics
✔ Identify which sections of the PMF IAS S&T book to focus on more
✔ Avoid reading the book randomly and instead cover it strategically
📘 How to use this series:
👉 Follow daily posts
👉 Revise the mentioned sections from the book
👉 Solve MCQs and track your understanding
⚠️ Remember:
This is NOT about reading everything.
This is about smart revision + right focus areas.
Let’s begin. Stay consistent. 💪
❤2
CRISPR-Cas9 technology is primarily used for:
Anonymous Quiz
3%
Protein synthesis
94%
Gene editing
2%
Energy storage
0%
Vaccine delivery