1 September 2025

• Biodiversity: Udanti-Sitanadi Tiger Reserve in Chhattisgarh draws attention for its ecological corridor links with Kawal, Tadoba, and Kanha reserves.
• International: SCO Summit 2025 opens with the theme "Upholding the Shanghai Spirit: SCO on the Move."
• Technology: Adi Vaani, an AI-based translation tool for tribal languages, launched by the Ministry of Tribal Affairs.
• Finance: INTERPOL Purple Notices and the Online Suspect Registry System both in the news for cross-border crime cooperation.
• Environment: Green Credit Programme under the Environment Protection Act, 1986, administered by ICFRE.

GS area: Environment and Ecology

Udanti-Sitanadi Tiger Reserve in Chhattisgarh entered prelims discussions this week for its landscape-level ecological connectivity. This is the kind of map-plus-institution question UPSC rewards.

• Location: Chhattisgarh. Comprises Udanti Wildlife Sanctuary and Sitanadi Wildlife Sanctuary as its two units.
• Corridor links: The reserve shares ecological connectivity with Kawal Tiger Reserve (Telangana), Tadoba-Andhari Tiger Reserve (Maharashtra), and Kanha Tiger Reserve (Madhya Pradesh). This makes it a central node in the central Indian tiger landscape.
• Terrain features: The hills of Kutroo, Kandlapatru, and Matti Murka define the landscape. Dense sal forests with streams feed the Mahanadi system.
• Project Tiger: India launched Project Tiger in 1973. It is now administered by the National Tiger Conservation Authority (NTCA) under the Wildlife Protection Act, 1972.
• Tiger reserves in India: 55 notified tiger reserves as of 2025, covering about 75,000 sq km.

The connectivity argument matters. Isolated tiger populations collapse genetically within generations. A reserve that links four major tiger landscapes is an ecological asset of national importance.

Static linkage: Biodiversity (environment), Project Tiger, NTCA.

GS area: International Relations

The Shanghai Cooperation Organisation held its annual summit in 2025 under the theme "Upholding the Shanghai Spirit: SCO on the Move." The institution's counter-terrorism wing always appears in prelims.

• Establishment: SCO was established on 15 June 2001 in Shanghai. It evolved from the Shanghai Five mechanism (China, Russia, Kazakhstan, Kyrgyzstan, Tajikistan) that began in 1996.
• Charter: Signed in 2002 in St. Petersburg; entered force on 19 September 2003.
• Headquarters: Beijing, China.
• Full members (10): China, Russia, India, Pakistan, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan, Iran, Belarus.
• Regional Anti-Terrorist Structure (RATS): Headquartered in Bishkek, Kyrgyzstan. RATS coordinates member states on counter-terrorism, separatism, and extremism. Its headquarters location is a standard prelims question.
• India joined: 2017 (Astana summit, alongside Pakistan).

The "Shanghai Spirit" is the SCO's declared norm: mutual trust, mutual benefit, equality, consultation, respect for diverse civilisations, and pursuit of common development.

Static linkage: International organisations, India's foreign policy.

GS area: Governance, Science and Technology

The Ministry of Tribal Affairs launched Adi Vaani, an artificial-intelligence-based translation tool for tribal languages. The scheme card matters for prelims.

• What it does: Provides real-time translation between tribal languages and major Indian languages, and between tribal languages and English.
• Ministry: Ministry of Tribal Affairs. Not MEITY or MoST this is a tribal-rights and welfare initiative, not a generic tech initiative.
• Target users: Tribal communities, especially those in courts, hospitals, and government offices where language barriers deny access to services.
• Constitutional anchor: The Fifth Schedule (areas and administration of scheduled tribes in states other than Assam, Meghalaya, Mizoram, Tripura) and Sixth Schedule (tribal areas in northeast) protect tribal governance. Article 29 protects the right of any section to conserve its language.
• Particularly Vulnerable Tribal Groups (PVTGs): 75 groups across 18 states and Andaman and Nicobar Islands. Many PVTG languages are unscripted. Tools like Adi Vaani address this gap.

The digital access gap for tribal communities is as significant as the physical access gap. Language is the first barrier.

Static linkage: Tribal affairs (polity and governance), Eighth Schedule (scheduled languages).

GS area: Environment, Governance

The Green Credit Programme (GCP) surfaced in news as part of India's market-based environmental incentive architecture.

• Legal basis: Notified under the Environment (Protection) Act, 1986. This is important: the GCP is not a standalone law but derives authority from the EP Act.
• Administrator: Indian Council of Forestry Research and Education (ICFRE), Dehradun. ICFRE is under the Ministry of Environment, Forest and Climate Change (MoEFCC).
• How it works: Activities like tree plantation, sustainable agriculture, water conservation, and waste management earn tradeable Green Credits. These are different from carbon credits (which go under the Carbon Credit Trading Scheme under the Energy Conservation Act).
• Difference from Carbon Credits: Green Credits cover a wider range of environmental actions and do not necessarily require emissions measurement. Carbon Credits are specifically for greenhouse gas reductions.
• EP Act, 1986: The parent statute for environment protection in India. It empowers the Central Government to set standards, restrict activities, and appoint authorities for environment protection.

Static linkage: Environmental laws (environment), market-based instruments for conservation.

GS area: Internal Security, International Relations

INTERPOL's colour-coded notice system is a regular prelims topic. The Purple Notice appeared in the news for information-sharing on criminal methods.

• Purple Notice: Seeks or provides information on criminal methods, objects, devices, and concealment techniques used by criminal groups. It is about the modus operandi, not an individual fugitive.
• Red Notice: A request to locate and provisionally arrest a person pending extradition. The most common notice type in Indian courts.
• Blue Notice: Collects additional information about a person of interest in a criminal investigation.
• Green Notice: Provides warnings about a person's criminal activities.
• Yellow Notice: Helps locate missing persons.
• Orange Notice: Warns about persons, objects, or events posing a serious and imminent threat.
• Black Notice: Seeks information on unidentified bodies.
• INTERPOL headquarters: Lyon, France (not a UN body a separate intergovernmental organisation of 196 member countries).
• Online Suspect Registry System: Developed by India's Indian Cyber Crime Coordination Centre (I4C) under MHA. Separate from INTERPOL this is a domestic fraud-risk tool that financial institutions use.

Static linkage: Internal security (INTERPOL), cybercrime.

GS area: Social Justice, Governance (Education)

Samagra Shiksha appeared in prelims context as the scheme subsuming earlier education programmes.

• What it covers: Pre-primary (3 years) to Class 12. This is broader than its predecessors.
• Predecessor schemes subsumed: Sarva Shiksha Abhiyan (SSA), Rashtriya Madhyamik Shiksha Abhiyan (RMSA), and Teacher Education (TE).
• Constitutional basis: Article 21A (right to free and compulsory education for ages 6 to 14) and the Right of Children to Free and Compulsory Education Act, 2009.
• Focus areas: Teacher training, digital education, STEM labs, sports and physical education, vocational education, infrastructure grants to government schools.
• Centrally Sponsored Scheme: Cost-sharing between Centre and states.

The shift from SSA to Samagra Shiksha reflects the move to a unified school-education architecture under the National Education Policy 2020 framework.

Static linkage: Education (social justice), RTE Act 2009.

GS area: Infrastructure, Governance

India commissioned the final section of the Bairabi-Sairang railway line, giving Mizoram its first direct rail link to the national network.

• Route: 38 km of broad-gauge track connecting Bairabi (at Assam's border) to Sairang (near Aizawl).
• Engineering scale: 48 tunnels totalling 12.85 km; 55 major and 87 minor bridges; Bridge No. 196 rises 104 metres above ground (42 metres taller than the Qutub Minar).
• Cost: About ₹8,000 crore.
• Policy alignment: India's Act East Policy and the "Transformation of North East (TONE)" programme under the Railways Ministry.
• Significance: Mizoram was the only state capital not connected by rail. The line ends that isolation, improves freight movement, and reduces logistics costs for the landlocked state.

Static linkage: Infrastructure (Indian economy), Northeast development.

GS area: Economy

The PMI is a recurring prelims topic. Its methodology and what values mean appear regularly in statement-based questions.

• Full form: Purchasing Managers' Index.
• Original developer: Institute for Supply Management (ISM), United States.
• In India: Published by S&P Global (formerly IHS Markit) based on surveys of purchasing managers in manufacturing and services firms.
• Scale: 0 to 100. A reading above 50 means expansion (output, orders, and employment are growing). Below 50 means contraction.
• Two indices: Manufacturing PMI and Services PMI. A composite PMI combines both.
• What it captures: New orders, output levels, employment, supplier delivery times, and stocks of purchases. It is a forward-looking, survey-based indicator.
• Why prelims uses it: PMI is released monthly and gives early signals about economic health before official GDP or IIP data is available.

Static linkage: Indian economy (macroeconomic indicators).

GS area: Polity, Governance

Census 2027 planning is underway. Key institutional facts:

• Authority: The Office of the Registrar General of India (RGI) under the Ministry of Home Affairs conducts the Census. The RGI is also known as the Census Commissioner of India.
• First synchronous decennial census: 1872 under Lord Mayo (though not pan-India). The first truly synchronous (simultaneous across regions) census was in 1881.
• First post-independence census: 1951.
• Census Act: Census Act, 1948 is the governing law.
• Geotagging: Census 2027 will geotag all buildings during Houselisting Operations (HLO) using a smartphone-based Census app with location enabled.
• Digital Layout Mapping (DLM): Will replace hand-drawn sketch maps to eliminate duplication and omission errors.

Static linkage: Polity (constitutional bodies), demographic data.

GS area: Science and Technology

CEREBO is a handheld device developed in India for field diagnosis of traumatic brain injury.

• Technology: Near-infrared spectroscopy (NIRS). The device shines near-infrared light through the skull and measures light absorption patterns to detect brain bleeds.
• Non-invasive: No needles, no radiation, no CT scan needed.
• Use case: Emergency field settings where CT scans are unavailable. Ambulances, border posts, remote clinics.
• Significance for India: Traumatic brain injuries from road accidents cause significant mortality in India, especially in areas far from equipped hospitals. Early field diagnosis can guide triage decisions.

Static linkage: Science and technology (healthcare).

• Orcinus orca (killer whale): Classified in family Delphinidae, not Phocidae. Widely distributed; a highly social species with high encephalisation. Despite the name, it is the largest member of the dolphin family.
• Account Aggregators: RBI-regulated entities that enable consented sharing of financial data between financial institutions. They are licensed under the RBI Act, not the Banking Regulation Act.