25 NOvember 2025 - Daily Current Affairs Updates

GS – 1 | Art & Culture

1. Postojna Cave (Slovenia)

• Subtopic: Karst Topography & Cultural Heritage

• Value Addition:

  • Located in western Slovenia; a 24 km long karst cave system formed by the Pivka River.

  • Among Europe’s largest and oldest tourist caves — open to visitors since 1819.

  • Geology:

    • Composed of limestone; features classic karst formations — stalactites, stalagmites, curtains, and columns.

    • Growth rate: ~1 cm per 100 years.

  • Unique Traits:

    • Only cave worldwide with an underground railway (operational for 140+ years).

    • Hosts Proteus anguinus (Olm) — blind amphibian with lungs and gills, endemic to karst habitats.

  • Cultural Context: Earliest human markings date to the 13th century.

• Subject Analysis:

  • Symbolizes geological heritage and eco-tourism integration.

  • Excellent case for karst landforms in physical geography & heritage conservation.

  • Relevant for GS1 – Art & Culture / Geography / Heritage Management.

GS – 1 | Geography

2. Pazhayar River (Tamil Nadu)

• Subtopic: River Systems & Environmental Management

• Value Addition:

  • Major river in Kanniyakumari district; originates from Mahendragiri Hills (800 m) and drains into the Arabian Sea near Manakudi.

  • Total length: ~40 km.

  • Tributaries: Alathurayar, Poigaiyar, Thadaveyar, Koya Odai, Ulakkaruviyar.

  • Infrastructure: Multiple dams – Chattupythur, Chettothoppu, Veerapuli, etc.

  • Ecological Value:

    • Manakudi Estuary – rich in mangroves, migratory birds, and estuarine biodiversity.

  • Concern:

    • High sewage discharge and untreated effluents degrading water quality.

    • Threatens mangroves and fishery-based livelihoods.

• Subject Analysis:

  • Highlights urban pollution’s impact on coastal ecosystems.

  • Demonstrates need for integrated river basin management.

  • Relevant for GS1 – Geography / Environment.

3. Hayli Gubbi Volcano (Ethiopia)

• Subtopic: Geophysical Phenomena – Volcanism

• Value Addition:

  • Location: Afar Region, Ethiopia (800 km NE of Addis Ababa); near Eritrea border.

  • Part of the Danakil Depression, one of Earth’s hottest inhabited zones.

  • Type: Shield Volcano – broad, gently sloping structure formed by fluid basaltic lava.

  • Range: Southernmost volcano of the Erta Ale volcanic range — known for persistent lava lakes.

  • Recent Event: First eruption in nearly 10,000 years.

  • Impact: Eruption produced an ash cloud — dangerous for aviation, respiratory health, and crops.

• Subject Analysis:

  • Demonstrates tectonic divergence & rift volcanism in East Africa.

  • Case study for continental rifting and natural hazards.

  • Relevant for GS1 – Geography / Geophysical Phenomena.

GS – 3 | Science & Technology

4. HAMMER Weapon System

• Subtopic: Defence Technology & Indigenous Manufacturing

• Value Addition:

  • Full Form: Highly Agile and Manoeuvrable Munition Extended Range.

  • Developed by Safran (France); JV with BEL (India) for local production.

  • Type: Precision-guided, air-to-ground glide bomb (smart munition).

  • Range: Up to 70 km; effective at low altitude and complex terrain.

  • Integration Platforms: Rafale, LCA Tejas (India’s indigenous fighters).

  • Features:

    • Modular guidance kits (GPS/INS or IR seeker).

    • Jamming-resistant navigation.

    • Capable of striking fortified structures.

  • Strategic Role: Enhances stand-off strike capacity with minimal collateral damage.

• Subject Analysis:

  • Boosts India’s defence indigenization & strategic autonomy.

  • Vital for precision warfare in mountainous and cross-border scenarios.

  • Relevant for GS3 – Science & Tech / Defence.

5. Information Security Education and Awareness (ISEA) Project

• Subtopic: Cybersecurity & Capacity Building

• Value Addition:

  • Initiative by MeitY; launched in 2005, now in Phase III (2023–28).

  • Objective: Build skilled manpower and create public awareness on cybersecurity.

  • Network: 50 institutions (IITs, NITs, IIITs, C-DAC, NIELIT).

  • Activities:

    • Training programs, research, and cyber hygiene awareness.

    • Establishment of cyber labs and incident response cells.

  • Cyber Security Innovation Challenge (CSIC) 1.0:

    • Student-led challenge promoting indigenous cybersecurity tools.

    • 10 domains: Network, Hardware, Fintech, Cryptography, Forensics, AI security, etc.

• Subject Analysis:

  • Enhances national cybersecurity resilience.

  • Reduces reliance on foreign security software.

  • Relevant for GS3 – Science & Tech / Internal Security