Topic Explainers

Evergreen ” UPSC” explainer articles; each links to its PYQs and current affairs.

Ancient & Medieval History · 12 Art & Culture · 3 Disaster Management · 1 Environment & Ecology · 10 Ethics · 2 Geography · 15 Indian Economy · 25 Indian Polity · 46 Indian Society · 5 Internal Security · 4 International Relations · 13 Modern Indian History · 12 Science & Technology · 13 Social Justice · 2 World History · 5

Monazite, a rare-earth mineral also found in India's coastal sands

Geography

Critical Minerals and the National Critical Mineral Mission: India’s List of 30, Rare Earths, Lithium, MMDR Amendment 2023, KABIL, Global Partnerships and Challenges (UPSC Notes + PYQs)

Critical minerals for UPSC: meaning, India's 30 critical minerals, National Critical Mineral Mission, rare earths, China dependence, KABIL, challenges.

Main building of the Indian Institute of Science, Bengaluru

Science & Technology

Anusandhan National Research Foundation (ANRF): the ANRF Act 2023, the ₹1 Lakh Crore Research, Development and Innovation (RDI) Scheme and India’s R&D Gap (UPSC Notes + PYQs)

ANRF for UPSC: ANRF Act 2023, structure, funding, the ₹1 lakh crore RDI scheme, India's R&D spending, challenges and way forward, with…

Indian Polity

Constitution (130th Amendment) Bill, 2025: Removal of the Prime Minister, Chief Ministers and Ministers Detained for 30 Days, Articles 75, 164 and 239AA, Arguments For and Against (UPSC Notes + PYQs)

130th Amendment Bill for UPSC: removal of PM, CMs and Ministers held in custody for 30 days, Articles 75, 164, 239AA, debate,…

Bioreactor is capable of maintaining a stable environment that is conducive to cell growth.

Science & Technology

BioE3 Policy: Biotechnology for Economy, Environment and Employment, Biomanufacturing Hubs, Biofoundries and India’s $300 Billion Bioeconomy Goal (UPSC Notes + PYQs)

BioE3 policy for UPSC: meaning, six thematic sectors, biomanufacturing and Bio-AI hubs, biofoundries, India's bioeconomy size, challenges and way forward.

Grazing on the hillock. Village scenes. Saligao village. Bardez, Goa, India.

Science & Technology

One Health Approach: Why Human, Animal and Environmental Health Are Linked, Zoonotic Diseases, the Global Quadripartite and India’s National One Health Mission (UPSC Notes + PYQs)

One Health for UPSC: meaning, zoonoses and spillover, drivers, Quadripartite of FAO, UNEP, WHO and WOAH, India's National One Health Mission, gaps,…

Electron micrograph of methicillin-resistant Staphylococcus aureus (MRSA), a drug-resistant superbug

Science & Technology

Antimicrobial Resistance (AMR): How Superbugs Arise, the Global and Indian Burden, Causes in Hospitals, Farms and the Environment, and India’s National Action Plan 2.0 (UPSC Notes + PYQs)

Antimicrobial resistance for UPSC: how resistance develops, deaths and burden, causes in India, Red Line, colistin ban, AWaRe, NAP-AMR 2.0 and way…

Indian Polity

Waqf in India: Meaning, the Waqf Act 1995, the Waqf (Amendment) Act 2025, What Changed, the Constitutional Challenge and the Way Forward (UPSC Notes + PYQs)

Waqf Act for UPSC: what a waqf is, Waqf Boards and tribunals, the 1995 Act, the 2025 amendment, waqf by user, non-Muslim…

Unified Payments Interface explained for UPSC

Indian Economy

Unified Payments Interface (UPI): How It Works, NPCI, Digital Public Infrastructure, Growth, Going Global, Concentration Risk and Fraud (UPSC Notes + PYQs)

UPI for UPSC: NPCI, how a UPI payment works, zero MDR, UPI Lite, credit on UPI, international links, market share cap, fraud…

Science & Technology

Semiconductors and India: What Chips Are, the Global Value Chain, India Semiconductor Mission, New Fabs and Packaging Units, Challenges and the Way Ahead (UPSC Notes + PYQs)

Semiconductors for UPSC: what a chip is, design-fab-packaging chain, Taiwan, India Semiconductor Mission, Dholera, Sanand, Jewar plants.

Science & Technology

ISRO and India’s Space Programme: History, Launch Vehicles, Major Missions from Aryabhata to Chandrayaan-3, Space Sector Reforms and the Road to 2040 (UPSC Notes + PYQs)

ISRO for UPSC: Sarabhai and INCOSPAR, PSLV, GSLV and LVM3, Chandrayaan, Mangalyaan, Aditya-L1, NavIC, IN-SPACe, Space Policy 2023 and private launches.