DNA – 23 September 2025 | UPSC Daily News Analysis | Current Affairs for Civil Services Exam
Welcome to your Daily News Analysis – designed for aspirants preparing for UPSC, State PSCs, and other competitive exams. This session brings clarity to complex topics with an exam-focused approach.📌 Topics Covered in This Session:
🔹 Smog-Eating Photocatalytic Coating
— Innovative “smog-eating paints” use TiO₂ particles activated by UV light
— Mechanism: hydroxyl radicals and superoxide ions break down NOx and VOCs into harmless compounds
— Applications: buildings, highways, public infrastructure, glass, smart city projects
— Advantages: reduces pollution, self-cleaning, low maintenance, passive working, extends building durability
— Challenges: high cost, limited efficiency indoors, residue safety concerns, large-scale need
— Global examples: Netherlands roads, Milan facades, Mexico City hospitals
— India: IIT Delhi and IIT Madras researching cost-effective photocatalytic paints for NCR smog
🔹 Kartarpur Corridor
— Visa-free corridor connecting Gurdwara Darbar Sahib (Pakistan) with Gurdwara Dera Baba Nanak (India)
— Guru Nanak Dev Ji spent last 18 years of his life at Kartarpur
— Religious significance: second holiest Sikh shrine after Golden Temple
— Opened in 2019 as a landmark people-to-people diplomacy step between India and Pakistan
🔹 Supercomputers
— Extremely powerful computers performing quadrillions of calculations per second
— Features: PetaFLOPS speed, terabytes of memory, massive cooling systems, high cost
— Uses: weather forecasting, space research, nuclear defence, AI, medical research, disaster modelling
— Global leaders: Frontier (USA), Fugaku (Japan)
— Indian achievements: PARAM Siddhi-AI, Pratyush, Mihir
— National Supercomputing Mission (2015): goal of building 70+ supercomputers for self-reliance
🔹 Uranium Mining in India
— Key mineral for nuclear energy and strategic use
— Major deposits: Jharkhand (Jaduguda, Narwapahar), Andhra Pradesh (Tummalapalle), Telangana (Lambapur, Peddagattu), Meghalaya (Domiasiat, Wahkaji)
— Mining authority: Uranium Corporation of India Limited (UCIL) under DAE (plans to open to private players)
— Issues: environmental contamination, health hazards, tribal resistance (Khasi tribes in Meghalaya)
— Supply gap: India imports uranium from Canada, Kazakhstan, Australia
🧠 Each issue is connected with governance, environment, technology, and energy security — vital for UPSC Prelims and Mains.
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