Subject: Science & Tech – Mosquito Behaviour; Health – Vector Borne Diseases; NVBDCP; Malaria; Dengue.
Why in News?
Key Findings
Primary Attractant: Carboxylic Acids
How the Study Was Conducted
Other Attraction Factors
| Factor | Impact |
|---|---|
| Body heat | Mosquitoes detect thermal signals |
| Carbon dioxide (CO₂) | Exhaled CO₂ indicates presence of living host |
| Skin microbiota | Produces carboxylic acids (primary long-term attractant) |
Why Mosquitoes Bite
Vector Control Measures in India
Government Programmes
Methods
Source/Reference:
Subject: Polity – Education; Governance – NTA; Current Affairs – NEET Cancellation; Paper Leak;
Why in News?
About NTA
Establishment
Mandate
Key Examinations Conducted
Previous Controversy (2024)
Computer-Based Test (CBT) – A Policy Question
Challenge for CBT
Key Terms for Prelims
Source/Reference:
Subject: International Relations – BRICS; Multilateralism; New Development Bank; India’s Chairmanship.
Why in News?
About BRICS
Origin
Current Members (11)
Key Statistics
Key BRICS Institutions
New Development Bank (NDB)
Contingent Reserve Arrangement (CRA)
Delhi Meeting: Challenges
West Asia Divisions
Outcome
Key Participation
India’s Chairmanship Theme
Source/Reference:
Subject: Geography – Monsoon Forecasting; Science & Tech – AI in Weather; IMD; Block-level Forecasts.
Why in News?
Key Features
Purpose
Uttar Pradesh Pilot
2026 Monsoon Context
Key Terms
Source/Reference:
Subject: International Relations – Indian Foreign Policy; Strategic Principles; Multilateral Diplomacy; Geopolitical Strategy.
Why in News?
The Five Principles
Key Terms for Prelims
Static-Dynamic Linkage
Static (International Relations Syllabus)
Dynamic (Current Affairs – May 2026)
Source/Reference:
Subject: Science & Tech – Cancer Immunotherapy; PD-1 Inhibitors; Blood-Brain Barrier; DKK1; Brain Metastases.
Why in News?
Key Findings
How PD-1 Inhibitors Affect BBB
Double-Edged Role
| Positive Effect | Negative Effect |
|---|---|
| Allows chemotherapy drugs (e.g., cisplatin) to enter brain | May allow circulating cancer cells to enter brain |
| Improves drug delivery for brain metastases | Increases risk of new brain metastases in resistant cancers |
| Anti-PD-1 + cisplatin improved survival in mice | Explains why some patients develop brain lesions during treatment |
Clinical Observations
Biomarker Potential
Implications for Treatment
Key Terms for Prelims
Source/Reference:
Subject: Geography – Water Resources; Economy – Blue Economy; Disaster Management – Drought; Schemes – Jal Jeevan Mission.
Why in News?
Scale and Magnitude of the Crisis
India supports 18% of the world’s population but has access to only 4% of global freshwater resources. Key indicators reflect a deepening emergency:
Major Urban Flashpoints (2026)
Root Causes
Government Initiatives (Reforms)
Key Terms for Prelims
Source/Reference:
GS Paper III – Economy (Agriculture; Food Security) | GS Paper III – Environment
Fertiliser Subsidy; Import Dependence; Nutrient Imbalance; Direct Income Support
Introduction
PM Modi’s call to halve chemical fertiliser use may be impractical, but its core message—reducing overdependence and promoting balanced use—is valid. India relies heavily on imports for fertiliser inputs like natural gas, phosphate, potash, and sulphur, making it vulnerable to global disruptions such as the West Asia conflict and Strait of Hormuz closure. Years of subsidies have encouraged excessive urea and DAP use, damaging soil health. With supply and subsidy burdens rising, urgent fertiliser reforms are unavoidable.
Main Body
India’s Fertiliser Vulnerability
Limited Domestic Reserves:
The Supply Shock:
The Subsidy Regime: Encouraging Overuse and Imbalance
Historical Shift:
Low Nutrient Use Efficiency:
Soil Damage:
Why the Current System Fails
How It Works:
Why It Fails During Supply Shock:
Fiscal Unsustainability:
The Reform Proposal: Direct Income Support
The Proposal:
How It Would Work:
Advantages:
Addressing Concerns:
Complementary Reforms
The Political Economy of Reform
Why Reform Has Been Delayed:
Why Reform Is Now Possible:
The Window of Opportunity:
Conclusion
India’s heavy dependence on imported fertiliser inputs is exposed by the West Asia conflict and Strait of Hormuz disruption. Decades of subsidies have promoted excessive urea and DAP use, worsening soil imbalances and fiscal burdens, while urea efficiency remains low.
The proposed reform is to reduce product-based subsidies, align prices closer to market levels, and provide direct per-acre income support to farmers using savings from fertiliser subsidies and PM-Kisan. The current crisis highlights the urgency of long-pending fertiliser reforms.
UPSC Mains Practice Question
GS Paper II – International Relations (Bilateral & Regional Groupings)
BRICS; Global South; Multipolarity; De-dollarisation; India’s Foreign Policy
Introduction
India’s foreign policy stands at a strategic crossroads: it is both a key Quad partner aligned with the West and the 2026 BRICS president representing the Global South. Rising tensions—seen in trade disputes, missed joint statements, and differences over global financial reforms—highlight the limits of simple “multi-alignment.” The real challenge for India is whether it can balance these competing roles while emerging as a credible leader of a divided Global South.
Main Body
The Genesis of BRICS: From Acronym to Institution
The Conceptual Birth (2001):
O’Neill’s Prediction on India:
The Political Birth (2006):
India’s Nuanced Approach: Complementary, Not Confrontational
The Middle Path:
The Shift After 2008 Financial Crisis:
BRICS Today: Expansion and Institutional Heft
Membership Expansion:
Key Institutions:
The Kazan Declaration (2024):
US Resistance: Trump’s Economic Warfare
Escalating Threats:
Limitations of US Approach:
India’s BRICS Presidency (2026): Challenges and Fissures
Low-Key Presidency:
Rio de Janeiro Declaration (July 2025):
Current Challenges:
The Risk:
The Way Forward: India’s Strategic Choices
The Dual Identity Test:
Possible Paths:
The Stakes:
Conclusion
BRICS has transformed into a major voice of the Global South, expanding its membership and strengthening institutions like the New Development Bank and BRICS Pay. Yet India’s 2026 presidency faces challenges, including internal divisions over West Asia and balancing BRICS commitments with its Quad partnership. India now confronts a strategic choice: deepen leadership of the Global South or move closer to the West, as its handling of upcoming BRICS meetings will shape both its global role and BRICS’ future relevance.
UPSC Mains Practice Question