4 June 2025

• Infrastructure: India to build its first Polar Research Vessel in partnership with GRSE (Kolkata) and Kongsberg (Norway), capable of Arctic and Antarctic navigation and 6 km deep-sea exploration.
• Environment: Centre notified five new regulations for Ladakh covering domicile-based job reservations, official languages, and one-third reservation for women in Autonomous Hill Development Councils.
• Science: researchers at VIT discovered antibiotic-producing thermophilic bacteria at Rajgir hot spring in Bihar, yielding a compound active against drug-resistant pathogens.
• Sports tragedy: 11 people died in a stampede at Bengaluru's Chinnaswamy Stadium during RCB's IPL victory parade on 4 June 2025.
• Energy: India's ethanol blending reached 19.7 per cent in 2025, up from 1.5 per cent in 2013.

GS area: Science and Technology, International Relations (Polar research)

India signed an agreement to build its first dedicated Polar Research Vessel, reducing dependence on leased foreign ships for Antarctic and Arctic expeditions.

• Builder: Garden Reach Shipbuilders and Engineers Limited (GRSE), Kolkata. GRSE is a public sector shipyard under the Ministry of Defence.
• Technology partner: Kongsberg Maritime, Norway.
• Supporting bodies: Ministry of Ports, Shipping and Waterways, and the National Centre for Polar and Ocean Research (NCPOR), which manages India's Maitri and Bharati stations in Antarctica.
• Capabilities: ice-breaking capacity for Arctic and Antarctic navigation; deep-sea exploration to 6 km depth; seabed samplers, seismic profilers, and multibeam sonar; laboratories for marine biology, geology, and climate research.
• Environmental compliance: IMO-compliant green fuel systems.
• Significance: India currently operates through leased icebreakers. A domestic vessel strengthens India's presence in the polar governance framework, including negotiations under the Antarctic Treaty System and the Arctic Council (observer status since 2013).

India ratified the Antarctic Treaty in 1983 and launched its first expedition in 1981-82. India has two active research stations: Maitri (1988) and Bharati (2012).

Static linkage: Science and Technology (polar research), International Relations (Antarctic governance).

GS area: Polity (Constitutional provisions for UTs, Federalism)

The Centre notified five regulations for the Union Territory of Ladakh under Article 240 of the Constitution. Article 240 empowers the President to make regulations for certain Union Territories that do not have a legislature.

• Ladakh Civil Services Decentralization and Recruitment (Amendment) Regulation, 2025: introduced domicile-based reservations for Ladakhi residents.
• Domicile definition: a person with 15 years of residency, 7 years of schooling in Ladakh, or children of long-serving Central Government employees qualify.
• Reservation structure: caste-based reservation increased to 85 per cent of posts, with 10 per cent for Economically Weaker Sections (EWS).
• Official languages (Ladakh Official Languages Regulation, 2025): English, Hindi, Urdu, Bhoti, and Purgi designated as official languages. Shina, Brokskat, Balti, and Ladakhi designated as promoted languages.
• Women's reservation: one-third of seats in the Autonomous Hill Development Councils (AHDCs) reserved for women on a rotational basis. Two AHDCs exist: Leh and Kargil.
• Background: Ladakh was carved out as a separate Union Territory without a legislature in October 2019 when J&K was reorganised. Demands for Sixth Schedule status (which gives tribal areas autonomous council powers) and a separate legislature have continued since.

Static linkage: Polity (Union Territories, Article 240, Sixth Schedule).

GS area: Environment and Ecology, Government schemes

The Centre announced the Aravalli Green Wall Project ahead of World Environment Day (5 June 2025).

• Coverage: a green belt 5 km wide along the 700 km stretch of the Aravalli range across Delhi, Haryana, Rajasthan, and Gujarat.
• Districts covered: 29 districts in four states.
• Nurseries: 1,000 to be developed with native plant species.
• Funding: CAMPA (Compensatory Afforestation Fund Management and Planning Authority), MNREGA, and state government schemes.
• Target: Phase I completion by 2027. The project's framework was presented at COP16 of the UNCCD held in Riyadh.
• Aravalli Range: one of the world's oldest fold mountain ranges, formed in the Proterozoic era. States covered: Delhi, Haryana, Rajasthan, Gujarat. Highest peak: Guru Shikhar at Mount Abu, Rajasthan (1,722 metres).
• Rivers rising from Aravallis: Banas, Sahibi (a tributary of the Yamuna), and Luni (which flows into the Rann of Kutch and has no outfall to the sea).
• Purpose: combat desertification, restore degraded land, and prevent the Thar Desert from advancing eastward into the National Capital Region.

Static linkage: Environment and Ecology (desertification, afforestation), Indian geography (Aravalli range).

GS area: Environment (Biodiversity), Geography

The Kulsi River flowing from Meghalaya into Assam hosts an endangered Gangetic dolphin population. A proposed 55 MW hydropower project has raised conservation concerns.

• Location: originates in West Khasi Hills, Meghalaya; flows into the Brahmaputra in Kamrup district, Assam.
• Length: approximately 60 km before joining the Brahmaputra.
• Gangetic River Dolphin: scientific name Platanista gangetica. Local name "Susu" from the sound it makes when surfacing. It uses echolocation because it has no functional lens (functionally blind). Surfaces every 30 to 120 seconds to breathe.
• Distribution: found in the Ganga, Brahmaputra, Meghna, and Karnaphuli-Sangu river systems across India, Nepal, and Bangladesh.
• IUCN status: Endangered.
• National designation: National Aquatic Animal of India (declared 2009).
• Conservation concern: the proposed hydropower dam could block dolphin movement between stretches of the Kulsi and Brahmaputra.

Static linkage: Environment and Ecology (endangered species, river biodiversity), Indian geography.

• Thermophilic bacteria at Rajgir: researchers at Vellore Institute of Technology discovered antibiotic-producing thermophilic bacteria at Rajgir hot spring, Bihar. Thermophiles grow optimally between 45°C and 70°C. Their heat-stable enzymes have industrial uses in PCR testing and biofuel production. The compound Diethyl phthalate from these bacteria showed activity against drug-resistant Listeria monocytogenes.
• Mount Etna eruption: Mount Etna in Sicily, Italy erupted in early June 2025. It is Europe's largest active stratovolcano (approximately 3,403 metres). Located on the boundary of the African and Eurasian tectonic plates. UNESCO World Heritage Site since 2013.
• Building-Integrated Photovoltaics (BIPV): solar panels embedded in building facades and windows rather than separate rooftop installations. World Bank estimates 309 GW of BIPV potential on existing Indian buildings. Linked to PM Surya Ghar Muft Bijli Yojana.