20 April 2026 Current Affairs (With PDF)

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Weakening of AMOC

Context

• Recent studies warn that the Atlantic Meridional Overturning Circulation (AMOC) is weakening and may approach a tipping point.

What is AMOC?

1. Atlantic Meridional Overturning Circulation (AMOC)

• A large-scale ocean circulation system in the Atlantic Ocean.
• Moves Warm surface water northward and Cold deep water southward

2. Nature

• Part of thermohaline circulation driven by Temperature (thermo) and Salinity (haline)

3. “Global Conveyor Belt”

• Redistributes heat between Equator and Poles

Mechanism of AMOC

1. Surface Flow

• Warm, saline water flows from tropics → North Atlantic

2. Deep Water Formation

• Cooling + high salinity → water becomes dense and sinks (downwelling)

3. Return Flow

• Cold deep water flows southward completes circulation loop

Climate Role

• Regulates global climate & weather patterns
• Keeps Northern Europe warmer than expected latitude
• Maintains heat balance across hemispheres

Evidence of Weakening

1. Observational Data

• Continuous decline over last two decades

2. Mooring Arrays

• Fixed instruments measuring Currents, Temperature and Salinity show reduced overturning strength

3. Ocean Bottom Pressure (OBP)

• Detects large-scale circulation changes confirms weakening

4. Western Boundary Contribution

• 90% of weakening linked to western boundary currents

Causes of AMOC Weakening

1. Global Warming

• Rising GHG levels → ocean warming

2. Freshwater Influx

• Melting of Greenland ice sheet adds freshwater

3. Salinity Reduction

• Freshwater lowers salinity → reduces density weakens sinking process

Potential Impacts of AMOC Collapse

1. Climate Disruption

• Collapse may trigger irreversible climate tipping point

2. CO₂ Release

• Could release 47–83 gigatonnes CO₂ accelerates global warming

3. Global Temperature Rise

• Additional warming of ~0.2°C

4. Regional Temperature Effects

• Arctic cooling (~7°C drop) and Antarctic warming (~6–10°C rise)

5. Polar Imbalance

• Strong temperature contrast between hemispheres

6. Carbon Cycle Shift

• Southern Ocean may turn from Carbon sink → carbon source

7. Feedback Loop

• More Arctic ice → higher albedo, further cooling (positive feedback)

AI Governance and Economic Group (AIGEG)

Context

• Government constituted the AI Governance and Economic Group (AIGEG) under the Ministry of Electronics and Information Technology.

About AIGEG

1. Nature

• A high-level inter-ministerial body
• Acts as the apex institution for AI governance in India

2. Objective

• Build a coherent national AI governance framework
• Balance Innovation, Safety, Accountability and Ethical deployment

3. Approach

• Whole-of-Government Model ensures coordination among Ministries, Regulators and Institutions avoids fragmented AI regulation

4. Composition

• Experts from Technology, Economics, Public policy and National security

5. Leadership

• Chairperson: Minister of Electronics & IT
• Vice-Chairperson: Minister of State (Electronics & IT)

6. Advisory Body

• Supported by Technology and Policy Expert Committee (TPEC)
• Provides Global best practices, Risk assessment and Regulatory inputs

India’s AI Governance Framework

1. Release

• Unveiled during AI Impact Summit 2026

2. Nature

• Principle-based approach (not strict regulation-heavy model)

3. Seven Key Principles (Sutras)

• Trust is the Foundation, People First, Innovation over Restraint, Fairness & Equity, Accountability, Understandable by Design (Explainable AI), Safety, Resilience & Sustainability

4. Key Objectives

• Promote “AI for All”
• Prevent market concentration in a few firms
• Align AI growth with Viksit Bharat 2047 vision
• Ensure Inclusive development and Ethical AI deployment

Significance

1. Institutional Coordination

• Reduces regulatory fragmentation

2. Balancing Innovation & Regulation

• Encourages AI growth without Over-regulation and Innovation slowdown

3. Ethical AI Ecosystem

• Focus on Transparency, Accountability and Fairness

4. Strategic Autonomy

• Strengthens India’s position in Global AI governance and Digital sovereignty

Challenges

1. Rapid Technological Change

• Regulation may lag behind innovation

2. Global Coordination

• Need alignment with EU AI Act, US frameworks and Global standards

3. Enforcement

• Principle-based model may face Implementation gaps

4. Data & Privacy Concerns

• Ensuring Responsible data usage and Protection of user rights

Rise in Patent Filings in India

Context

• India’s patent filings rose by 30.2% to 1.43 lakh in FY 2025–26.
• Indicates rapid expansion of the innovation ecosystem.

Patent Ecosystem in India

1. Domestic Innovation Surge

• ~69% applications filed domestically reflects growing indigenous R&D capacity

2. Global Position

• India is now the 6th largest patent filer globally

3. State Leaders

• Leading states: Tamil Nadu, Karnataka, Maharashtra
• Strong presence of IT hubs, Manufacturing clusters, Research institutions

4. Government Initiatives

• Reduced filing fees
• Expedited examination process
• Support for Startups, MSMEs and Academic institutions

5. Ease of Filing

• Pro bono facilitation schemes assist in Patent filing, Trademarks and Industrial designs

6. Significance

• Signals shift towards a Knowledge-based economy and Innovation-led growth model

About Patents

1. Definition

• A patent is an intellectual property right granting exclusive rights to an inventor.

2. Legal Framework

• Governed by the Patents Act, 1970

3. Objective

• Promote innovation by Rewarding inventors and encouraging public disclosure of technology

4. Criteria for Patentability

1. Novelty (new invention)
2. Inventive Step (non-obvious)
3. Industrial Applicability

5. Duration

• 20 years from date of filing

6. Exclusive Rights

• Prevent others from Making, Using, Selling and Importing without permission

7. Types of Patents

• Product Patent → for new products
• Process Patent → for new methods/processes

8. Opposition Mechanism

• Pre-grant opposition → by any person
• Post-grant opposition → by interested parties

Why Patent Growth Matters

1. Innovation Indicator

• Reflects R&D intensity and Technological progress

2. Economic Growth

• Drives Industrial competitiveness and High-value manufacturing

3. Startup Ecosystem Boost

• Protects ideas → attracts investment

4. Global Competitiveness

• Strengthens India’s position in Global innovation rankings

Challenges

1. Low R&D Spending

• India’s R&D expenditure ~0.7% of GDP (low vs global leaders)

2. Quality vs Quantity

• Rise in filings ≠ rise in high-quality patents

3. Awareness Gap

• MSMEs & rural innovators lack IP awareness

4. Enforcement Issues

• Patent litigation remains Costly and Time-consuming

National Cadet Corps (NCC)

Context

• National Cadet Corps launched a Cyber Security Capacity Building Programme with National Institute of Electronics and Information Technology (NIELIT).
• Aim: Develop “Cyber Cadets” to tackle emerging digital threats.

About NCC

1. Nature

• A voluntary Tri-Services organisation:
• Operates under the Ministry of Defence

2. Establishment

• Established under the NCC Act, 1948
• Based on recommendations of the H. N. Kunzru Committee

3. Scale

• Recognised as the world’s largest uniformed youth organisation

4. Motto

• “Unity and Discipline”
• Focus on Character building, Leadership, Patriotism, Selfless service

5. Headquarters & Structure

• Headquarters: New Delhi
• Headed by a Director General (DG NCC)

New Cyber Security Initiative

1. Key Features

• Training NCC cadets in Cyber hygiene, Digital safety and Threat detection

2. Alignment

• Supports Digital India Mission and National Skills Qualification Framework

3. Objective

• Build a grassroots cyber-aware citizen base
• Create first responders to cyber threats

Significance of NCC

1. Nation Building

• Instils discipline and civic responsibility among youth

2. Defence Preparedness

• Creates a pool of trained youth for Armed forces and Emergency response

3. Skill Development

• Provides Leadership training and Vocational and technical skills

4. Social Integration

• Promotes unity across Regions, Communities and Languages

5. Modern Relevance

• Expanding role in Cyber security, Disaster management and Environmental awareness

Scarborough Shoal

Context

• China has escalated tensions by deploying barriers and naval vessels to blockade the shoal.
• Flashpoint in the South China Sea dispute.

Location & Geography

• A triangular coral atoll and rich fishing ground
• Located: ~120 nautical miles west of Luzon and ~470 nautical miles from China’s coast

Nomenclature

• China: Huangyan Island
• Philippines: Panatag Shoal / Bajo de Masinloc

Strategic Importance

1. Fisheries

• Rich fishing grounds → livelihood for coastal communities

2. Geopolitical Location

• Situated in a highly contested maritime region

3. Military Significance

• Potential for Surveillance and Forward military presence

Core Dispute

1. Philippines’ Claim

• Based on 200-nautical-mile EEZ under United Nations Convention on the Law of the Sea

2. China’s Claim

• Based on Nine-Dash Line (historical claim over most of the South China Sea)

3. Legal Position

• 2016 ruling by Permanent Court of Arbitration: Rejected China’s Nine-Dash Line claims: Declared Chinese actions (blockade, restrictions) unlawful

Why It Matters

1. International Law vs Power Politics

• Tests enforceability of UNCLOS rulings

2. Regional Stability

• Escalation risks conflict involving ASEAN countries and Major powers

3. Global Trade Impact

• South China Sea handles ~1/3rd of global maritime trade

4. Precedent for Maritime Claims

• Influences disputes in East China Sea and Indian Ocean

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