Remote sensing uses satellites and drones to detect electromagnetic radiation from the Earth's surface, allowing scientists to map resources without physical contact. By analyzing 'spectral signatures'—unique reflections of light—it can identify plant health, mineral deposits, and water bodies. For instance, healthy plants reflect more near-infrared light. Satellites like NASA's GRACE measure gravitational changes to track groundwater depletion. This technology is vital for precision agriculture, identifying oil and gas traps, and monitoring environmental changes like the expansion of deserts or the health of forests.
- Remote sensing identifies objects based on their unique spectral signatures across visible and invisible light spectrums.
- The Normalized Difference Vegetation Index (NDVI) is used to assess plant health and forest density.
- Gravitational anomalies detected by satellites help map underground structures and track groundwater levels.
Defence Minister Rajnath Singh commissioned ICGS Samudra Pratap in Goa, the first of two indigenously designed Pollution Control Vessels (PCVs). Built by Goa Shipyard Limited (GSL) with over 60% indigenous content, it is the largest ship in the Coast Guard's fleet. The vessel is equipped for oil spill response, fire-fighting, and maritime surveillance. It features advanced pollution detection systems and a helicopter hangar. Notably, the ship will have two women officers on board, reflecting the government's push for gender inclusion in frontline maritime operations.
- ICGS Samudra Pratap is India's first homegrown pollution control vessel designed to protect the marine environment.
- The ship enhances the Indian Coast Guard's (ICG) capability in oil spill response and maritime law enforcement.
- It was built by Goa Shipyard Limited (GSL) with a high degree of indigenous components (over 60%).
Data from the OECD reveal that India sustains annual economic losses equivalent to 0.4% of its GDP due to natural disasters. Between 1990 and 2024, India experienced a high frequency of hydrological disasters (floods and storms) and seismic events. The report highlights that Emerging Asia faces escalating threats, with an average of 100 disasters annually impacting 80 million people. Disaster risk finance has moved to the forefront of policy as the scale of economic loss escalates. India ranks second only to the Philippines in the World Risk Index among analyzed Asian economies, highlighting the need for enhanced adaptive capacity.
- India loses approximately 0.4% of its GDP annually to natural disasters, primarily driven by floods, storms, and tropical cyclones.
- Emerging Asia has averaged 100 disasters per year over the last decade, affecting nearly 80 million people and causing significant economic damage.
- The World Risk Index calculates risk based on a geometric mean of exposure and vulnerability (susceptibility, coping capacity, and adaptive capacity).
Every winter, thousands of migratory birds from Siberia, Tibet, and Europe arrive at the wetlands and Ramsar sites of Assam. Species such as bar-headed geese, northern pintails, and ferruginous pochards roost in destinations like Deepor Beel, Maguri Motapung Beel, and Son Beel. These avian guests boost the state's biodiversity and ecotourism. However, unsustainable development activities pose threats to these vital waterbodies. Sustained conservation efforts are ongoing to protect these habitats, which serve as crucial seasonal hubs for long-distance travellers across the globe.
- Assam's wetlands, including Ramsar sites, are major winter destinations for birds from the Palearctic region.
- Key species include bar-headed geese (known for high-altitude flight), northern pintails, and greylag geese.
- Important birding sites include Deepor Beel (Kamrup), Maguri Motapung Beel (Tinsukia), and Son Beel (Karimganj).
With India's urban population projected to reach 814 million by 2050, waste management is a critical challenge. The article emphasizes moving from a linear to a circular economy, focusing on 'Reduce, Reuse, Recycle.' Key issues include plastic waste, construction and demolition (C&D) waste, and wastewater. While SBM 2.0 aims for 'Garbage Free Cities,' hurdles like poor segregation and lack of inter-departmental coordination persist. The upcoming Environment (Construction and Demolition) Waste Management Rules 2025 and the expansion of Extended Producer Responsibility (EPR) are vital steps toward achieving sustainability and meeting climate goals.
- India needs to transition from a linear 'take-make-dispose' model to a circular economy to manage increasing urban waste.
- Plastic waste remains the toughest challenge due to poor segregation at the source and the presence of non-recyclable materials.
- Construction and demolition waste requires better tracking and enforcement of management rules to prevent illegal dumping.
The Swachh Bharat Mission (SBM) has successfully achieved Open Defecation Free (ODF) status for Indian villages, but the next challenge lies in managing faecal waste. ODF Plus focuses on solid and liquid waste management. A significant gap exists in faecal sludge management (FSM), especially in peri-urban and rural areas. Maharashtra is pioneering urban-rural partnerships, as seen in Satara district, where rural gram panchayats utilize urban treatment plants. This model ensures financial viability and sustainable sanitation by sharing infrastructure, potentially transforming sanitation across India by integrating rural needs with existing urban facilities.
- Swachh Bharat Mission (SBM) has transitioned from building toilets to ensuring sustainable waste management under ODF Plus.
- The primary challenge in rural sanitation is the regular desludging and safe treatment of faecal waste from septic tanks.
- Maharashtra's Satara district demonstrates a successful model where rural clusters use urban faecal sludge treatment plants (FSTPs).
The Aravalli Hills face threats from 'strategic exemptions' that bypass environmental scrutiny for mining critical minerals. While the Supreme Court has sought to define 'Aravalli Hills' and 'Aravalli Range' to restrict mining, the government often uses executive discretion for 'national defence' or 'strategic considerations.' The 2023 amendment to the Forest (Conservation) Act has further widened exemptions. This creates a conflict between India's climate commitments and industrial demand for minerals like lithium and rare-earth elements. Experts argue for a transparent framework to arbitrate these conflicts, ensuring sustainable development and protection of the Aravallis' vital ecosystem services.
- The Aravalli Hills are crucial for groundwater recharge and preventing desertification, but face pressure from illegal mining and urban expansion.
- Recent legal battles focus on defining the geographical extent of the Aravallis to enforce mining prohibitions.
- The Forest (Conservation) Amendment Act, 2023, provides broad exemptions for 'strategic' and 'security-related' projects.
India faces urgent challenges in food security due to climate change, with 51% of its net sown area being rainfed and vulnerable to weather variability. Climate-resilient agriculture (CRA) integrates biotechnology, AI-driven tools, and sustainable practices like genome-edited crops and biofertilizers to enhance productivity while protecting the environment. While initiatives like 'National Innovations in Climate Resilient Agriculture' (NICRA) and the BioE3 policy exist, scaling CRA requires a coherent national roadmap. This involves overcoming barriers like limited access for small farmers, quality inconsistencies in bio-inputs, and the digital divide to ensure widespread adoption of resilient farming techniques.
- CRA uses biotechnology and AI to reduce dependence on chemical inputs and improve crop resistance to heat and drought.
- Approximately 51% of India's net sown area is rainfed, making it highly susceptible to climate-induced yield fluctuations.
- The BioE3 policy positions CRA as a key thematic area for biotechnology-led solutions and sustainable development.
A recent tragedy in Indore, Madhya Pradesh, where contaminated municipality-supplied water led to deaths and illnesses, highlights critical gaps in India's water management. Despite progress under the Swachh Bharat Mission and Jal Jeevan Mission, infrastructure issues and lack of monitoring persist. Indore, previously voted India’s cleanest city, faced this crisis due to suspected contamination in the supply lines. The article emphasizes that access to water is meaningless without quality assurance. It calls for stricter enforcement of water guidelines, repair of old infrastructure, and regular chemical and sewage contaminant checks to prevent water-borne diseases.
- Contaminated water in Indore caused several deaths and over 200 hospitalizations, highlighting urban infrastructure failures.
- National Family Health Survey data shows 96% of households use improved water sources, but quality remains a concern.
- The crisis underscores the need for better enforcement of water guidelines and environmental laws at all levels.
The Supreme Court has put its November 20 decision on hold, which had upheld the government's restrictive definition of the Aravalli Range. This definition limited protection to hills over 100 meters high or clusters within 500 meters of each other. Environmentalists argued this would exclude thousands of hills, leading to unregulated mining and ecological degradation. The Court has now proposed a high-powered committee to conduct a scientific evaluation of the environmental impacts. It emphasized that the definition must ensure the 'ecological integrity' of the range, which acts as a barrier against the Thar desert's expansion and mitigates pollution in cities like Delhi.
- The court stayed the implementation of the restrictive definition to prevent irreversible ecological damage during ongoing proceedings.
- A new expert panel will analyze the possibility of adverse consequences from 'sustainable mining' in newly demarcated areas.
- The Aravalli Range is critical as a green barrier against the eastward expansion of the Thar desert and helps mitigate pollution in Delhi.
A panel under the Ministry of Environment has granted approval for the 260-megawatt Dulhasti Stage 2 hydropower project in Jammu and Kashmir’s Kishtwar district. Located on the Chenab river, this run-of-the-river project is estimated to cost over ₹3,200 crore. The approval comes at a time when India has suspended the Indus Waters Treaty (1960) with Pakistan following regional tensions. Consequently, India is accelerating several hydroelectric projects in the Indus basin, including Sawalkote, Ratle, and Pakal Dul. Dulhasti Stage 2 is an extension of the existing 390-MW Stage 1 project operated by the National Hydroelectric Power Corporation (NHPC).
- The 260-MW Dulhasti Stage 2 project is located on the Chenab river in Kishtwar, Jammu and Kashmir.
- India is pushing ahead with Indus basin projects as the Indus Waters Treaty is currently in abeyance.
- The project is a run-of-the-river type, estimated to cost approximately ₹3,200 crore and requiring 60.3 hectares of land.
The Supreme Court of India is scheduled to hear a suo motu case regarding the definition of the Aravalli Hills and Range. This judicial intervention follows concerns that a narrow definition could facilitate unregulated mining and cause severe ecological damage. Previously, the court accepted a definition from the Ministry of Environment, Forest and Climate Change, which identifies 'Aravalli Hills' as landforms with an elevation of 100 meters or more above local relief. An 'Aravalli Range' is defined as a collection of two or more such hills within 500 meters of each other. The court aims to identify permissible mining areas while strictly protecting restoration priority zones.
- The Supreme Court is taking suo motu cognizance to prevent ecological harm from unbridled mining in the Aravalli region.
- The Ministry of Environment defines Aravalli Hills based on a minimum elevation of 100 meters above local relief.
- The Aravalli Range is categorized as a cluster of hills located within 500 meters of one another.
India's goal of eliminating malaria by 2030 is threatened by the spread of Anopheles stephensi, an invasive mosquito species that thrives in urban environments. While India has seen a significant reduction in malaria cases—from 11.7 lakh in 2015 to 2.27 lakh in 2024—urban transmission presents unique challenges due to container breeding in construction sites and industrial settings. The Health Ministry's recent report emphasizes the need for city-specific vector control, enhanced surveillance, and addressing insecticide resistance. High-burden pockets in states like Odisha and Tripura, along with cross-border transmission, remain critical concerns.
- Anopheles stephensi is uniquely adapted to urban areas, breeding in artificial containers like tanks and tyres, unlike traditional rural vectors.
- India has achieved a 78% reduction in malaria deaths since 2015, moving largely into the pre-elimination phase.
- Challenges to elimination include asymptomatic infections, inconsistent private-sector reporting, and operational gaps in remote tribal areas.
The Union government has struggled to provide a uniform technical definition of the Aravalli hills, a critical ecological range spanning four states. Despite multiple committees and a year of effort, the Centre's proposed definition only protects areas above 100 meters from mining, leaving vast stretches vulnerable. The Supreme Court has threatened contempt proceedings, emphasizing the need for a definition that balances ecological conservation with economic growth. The conflict involves differing views from the Forest Survey of India (FSI) and the Geological Survey of India (GSI) on using slope and relief as criteria for definition.
- The Aravalli range is an ancient mountain system extending from Delhi to Gujarat, primarily located in Rajasthan, Haryana, and Gujarat.
- The 2019 National Mineral Policy encourages the mining of critical minerals, creating a conflict with the need for ecological preservation.
- A technical sub-committee suggested defining 'hills' based on slope and relief, but consensus remains elusive across different terrains.
Air pollution in Delhi-NCR is a complex issue driven primarily by vehicular emissions and seasonal stubble burning. The article discusses the 'Polluter Pays Principle' (PPP), which mandates that those who damage the environment must bear the cost of restoration. However, in India, there is a shift toward a 'government-pays principle,' where the state bears the cost of monitoring and mitigation. The trans-boundary nature of PM2.5 pollution necessitates international cooperation, as seen in conventions like CLRTAP. The judiciary plays an activist role, but challenges remain in quantifying damages and enforcing liability on non-point sources.
- The Supreme Court recognized the Polluter Pays Principle as part of Indian law in the Vellore Citizens Welfare Forum vs Union of India (1996) case.
- PM2.5 is recognized as a long-range trans-boundary air pollutant, requiring regional cooperation beyond local administrative boundaries.
- The Standley judgment by the European Court of Justice emphasizes proportionality, suggesting farmers cannot be solely liable for seasonal pollution.
As the world transitions to clean energy, rare earth elements (REEs) have become critical for manufacturing high-performance permanent magnets used in EV motors and wind turbines. India has launched a ₹7,280-crore scheme to establish an integrated manufacturing ecosystem for 6,000 tonnes of sintered rare earth permanent magnets annually. This initiative aims to reduce import dependency, particularly on China, which currently dominates the global REE supply chain. The article emphasizes that India must balance industrial capacity with strict environmental compliance (green compliance) to ensure a sustainable and credible transition.
- Rare earth magnets (neodymium-iron-boron) are essential bottlenecks in the EV and wind energy sectors.
- India's monazite-bearing beach sands are a major domestic source of REEs but require complex processing and waste management.
- The National Critical Mineral Mission is tasked with exploration, but converting deposits into manufacturing capacity remains a challenge.
The Union Environment Ministry has issued orders to Haryana, Rajasthan, and Gujarat to strictly enforce Supreme Court directions regarding mining in the Aravalli ranges. This follows concerns that vast tracts could be opened for mining before a management plan is finalized. The Indian Council of Forestry Research and Education (ICFRE) has been tasked with preparing a Management Plan for Sustainable Mining (MPSM). A key point of contention is the definition of the Aravalli range, with an expert committee suggesting a criterion of '100 metres above local relief,' which critics argue could exclude 92% of the hills from protection.
- The Supreme Court prohibited fresh mining leases in the Aravalli region until a Sustainable Mining Management Plan is in place.
- The ICFRE is responsible for identifying permissible and ecologically sensitive areas within the landscape.
- Existing mines are allowed to operate only if they strictly comply with environmental norms.
Amidst rising pollution in the National Capital Region, legal experts emphasize the 'Right to a Healthy Environment' as an integral part of the Right to Life under Article 21. While the Constitution didn't originally include environmental protection, judicial interpretations of Articles 48A (Directive Principles) and 51A(g) (Fundamental Duties) have established this right. Key legal doctrines like the 'Precautionary Principle,' 'Polluter Pays Principle,' and 'Public Trust Doctrine' (M.C. Mehta v. Kamal Nath) form the bedrock of environmental jurisprudence in India. Recent judgments also link climate change mitigation to the right to equality (Article 14).
- The Right to a Healthy Environment is recognized as a fundamental right under Article 21 of the Constitution.
- Articles 48A and 51A(g) provide the constitutional basis for the state's duty to protect the environment.
- The 'Public Trust Doctrine' establishes the state as a trustee of natural resources for the benefit of the people.
Himachal Pradesh is advocating for increased financial support from the 16th Finance Commission to compensate for the 'disproportionate burden' of preserving its vital forest cover. The state argues that its forests provide essential ecosystem services like carbon sequestration, water provision, and flood control, valued at billions of rupees, which benefit the entire country. While previous Finance Commissions (12th to 15th) introduced 'forest cover' as a criterion for horizontal tax devolution, Himachal seeks a more robust methodology that accounts for different forest types and the high costs of mountain-state development.
- Himachal Pradesh's forest wealth is estimated at ₹9.95 lakh crore in terms of ecosystem services.
- The state wants the 16th Finance Commission to increase the weightage of 'forest cover and ecology' in tax devolution.
- Current formulas are criticized for only using dense forest data, ignoring other critical ecological values.
A Supreme Court Bench has reframed Corporate Social Responsibility (CSR) as an enforceable constitutional and legal obligation rather than a discretionary act. The judgment links CSR to Article 51A(g) of the Constitution, stating that corporations, as legal persons, share the duty to protect the environment. This ruling strengthens the legal basis for demanding corporate financing for projects to recover species endangered by corporate activities, specifically the Great Indian Bustard. The Court's order aims to balance renewable energy infrastructure development with the protection of critical habitats through the undergrounding of power lines.
- CSR is now viewed as an enforceable constitutional obligation under Article 51A(g) rather than charity.
- The ruling specifically addresses the protection of the Great Indian Bustard from power infrastructure risks.
- Corporations are recognized as legal persons with shared duties toward environmental protection measures.
Recent research published in Nature Climate Change reveals that the Southern Ocean is absorbing more carbon than previously predicted by climate models. While models suggested that stronger westerly winds would bring carbon-rich deep water to the surface and release CO2, observations show the opposite. A thinning layer of freshwater at the surface, resulting from increased rainfall and melting ice, has strengthened stratification. This 'lid' of fresh, cold water traps carbon-rich water 100-200 meters below the surface, preventing its release into the atmosphere and acting as a temporary buffer against climate change.
- The Southern Ocean absorbs approximately 40% of all human-emitted carbon dioxide globally.
- Existing climate models predicted the Southern Ocean would become a carbon source due to stronger winds, but observations show it remains a sink.
- Increased stratification caused by a freshwater layer is currently trapping carbon-rich water below the surface.
Beijing successfully reduced PM2.5 levels by over 50% between 2013 and 2021 through a 'top-down' approach involving coherent policy, strict enforcement, and regional coordination. In contrast, India's efforts, like the National Clean Air Programme (NCAP), are often reactive and fragmented across multiple agencies. China's 'airshed' strategy for the Beijing-Tianjin-Hebei region ensured transboundary regulation. India can learn by shifting from episodic responses to a long-term mission-oriented strategy, accelerating clean energy transitions, and strengthening the implementation of existing laws like the Air Act, 1981, and the Environment Protection Act, 1986.
- Beijing's PM2.5 levels dropped significantly from 102 µg/m³ in 2013 to 31 µg/m³ in 2024 due to coordinated regional action.
- China utilized an 'airshed' strategy for regional coordination, which India currently lacks for the Delhi-NCR region.
- India's regulatory framework is fragmented, with interventions often limited to 'pollution peaks' rather than long-term planning.
The Supreme Court of India has ruled that Corporate Social Responsibility (CSR) inherently includes environmental responsibility. Interpreting Article 51A(g) of the Constitution, the Court held that corporations, as legal persons, have a fundamental duty to protect and improve the natural environment. The judgment, delivered in a case concerning the Great Indian Bustard, emphasizes that CSR is a constitutional obligation rather than a voluntary act of charity. Consequently, companies operating near sensitive habitats must prioritize conservation efforts and adhere to the 'polluter pays' principle. This ruling mandates that CSR funds be directed toward both in-situ and ex-situ conservation to prevent species extinction.
- The Supreme Court linked Corporate Social Responsibility (CSR) to the fundamental duty under Article 51A(g).
- Corporations are now legally recognized as having a duty to protect forests, lakes, rivers, and wildlife.
- The ruling specifies that CSR funds should be directed toward in-situ and ex-situ conservation of endangered species.
The Union Tribal Affairs Ministry is developing a national web portal named 'TARANG' to digitize the recognition and management of forest rights. The portal aims to provide a single-window interface for all processes under the Forest Rights Act (FRA) 2006, including filing claims, processing by Gram Sabhas, and issuing digital title deeds. This initiative is part of a larger FRA roadmap expected to be finalized by mid-2026. By digitizing records and geotagging recognized lands, the government hopes to streamline the verification process and ensure the saturation of welfare schemes for tribal communities and forest dwellers.
- The 'TARANG' portal will act as a single-window system for all Forest Rights Act (FRA) processes.
- The portal will facilitate the filing of claims, issuance of digital title deeds, and mapping of potential forest areas.
- The initiative aims to digitize legacy data and geotag all recognized forest rights lands across India.