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  2. Environment and Ecology

Chennai Metrowater Community Well Restoration

Published on: 05-Sep-2026

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Chennai Metrowater Community Well Restoration

Article Summary

Summary Notes: Chennai Metrowater Community Wells Initiative

Objective:

  • Restoration and conversion of community wells into rainwater harvesting structures to improve groundwater recharge.

Location:

  • Various locations in Perambur constituency, including:
    • Sidco Nagar First Main Road
    • Muthamizh Nagar
    • Kaviarasu Kannadasan Nagar
    • Muthamizh Nagar Second Street, First Block
    • Muthamizh Nagar 161st Street, Sixth Block

Project Details:

  • Depth of Wells: Average depth of community wells ranges from 10 m to 12 m; current groundwater available at an average depth of 5 m.
  • Funding: The project has a budget of ₹2 crores.
  • Status: Bids invited; work order expected to be issued shortly.
  • Similar initiatives planned city-wide to enhance groundwater recharge.

Historical Context:

  • Community wells historically served as drinking water sources during water scarcity in the 1980s and 90s but have since gone dry and been misused.

Community Feedback:

  • Residents, particularly from Muthamizh Nagar, are advocating for desilting of wells as a priority over aesthetic improvements, emphasizing its importance for drinking water security and groundwater replenishment.

Environmental Context:

  • This initiative aligns with sustainable water management practices, targeting the enhancement of local aquifers and mitigating issues related to urban water stagnation during monsoons, which is crucial for climate resilience.

Follow-up Actions:

  • The initiative indicates a commitment by Chennai Metrowater to invest in community resources and water sustainability strategies, reflecting a broader policy approach aimed at improving urban infrastructure and environmental health.

This initiative can serve as a model for other urban areas facing similar water management challenges.

Key Terms & Concepts

Chennai MetrowaterImplementing agency for wells
Perambur constituencyLocation for project initiative
Rainwater harvestingMethod for groundwater recharge
Community wellsSource of groundwater recharge
₹2-croreBudget for project
September 05, 2026Publication date of initiative
Groundwater tableMeasurement for water availability
DesiltingProcess to restore wells
Depth of wellsAverage depth usage for recharge
Aquifer recharging structuresPurpose of wells restoration

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Environment and Ecology05-Sep-2026

UN Report on Climate Change Impact

Exam-Focused Summary of UN Report on Global Warming

Key Findings and Data:

  • 1.5°C Limit: Breaching this limit results in irreversible losses, highlighting significant climate action challenges.
  • Projected Temperature Increases: If all countries meet current climate pledges, global warming could still reach ; with current policies, temperatures may rise to .
1.8°C
2.6°C
  • Greenhouse Gases Beyond CO2: The report emphasizes the need to address methane, which contributes approximately 0.5°C of current warming.
  • Global Initiatives:

    • Global Methane Pledge: Over 155 countries have committed to reducing anthropogenic methane emissions by at least 30% below 2020 levels by 2030. Notably, India has not joined this pledge.

    Challenges and Perspectives:

    • Developing economies like India emphasize their shift from fossil fuels and seek financial support and technology from developed nations, which historically contributed to carbon emissions.
    • The report notes a lack of focus on adaptation finance, despite its acknowledged importance in previous assessments.

    International Events and Future Discussions:

    • COP31 in Türkiye: Set for November, discussions are expected to center around climate responsibilities, especially after climate-induced disasters such as the Bhotekoshi disaster in Nepal, which underline the sensitivity of smaller nations to global warming impacts.
    • Statements from Nepal: Nepal's Foreign Affairs Minister highlighted the responsibility of large emitters (China, the USA, India) to address the effects of climate change on vulnerable nations.

    Recommendations:

    • India is urged to recalibrate its messaging and policies in light of global perceptions and the reality of operating within a 1.5°C world, recognizing its dual position as a victim of climate change and part of the emissions problem.

    Additional Notes:

    • The concept of an “overshoot, peak, and decline” pathway is proposed, advocating for measures that can limit the peak temperature before achieving reductions below the 1.5°C threshold by the century's end.

    Constitutional References:

    • Although not explicitly mentioned in the report, relevant articles may include:
      • Article 21: Right to life (implying a right to a sustainable environment).
      • Directive Principles of State Policy: Focus on protecting and improving the environment (Article 48A).

    Conclusion:

    The report serves as a critical reminder of the pressing global climate crisis, advocating for immediate action and collaboration among nations to mitigate the effects of global warming and support developing nations vulnerable to climate change impacts.

    Farmers Protest Ecological Sensitive Zone Proposal
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    Farmers Protest Ecological Sensitive Zone Proposal

    Summary of Key Points Related to the Proposal for Ecologically Sensitive Areas (ESA) in the Western Ghats:

    Protests by Farmers:

    • Farmers from Hosanagara taluk, Shivamogga district, are protesting against the draft notification for declaring large parts of the Western Ghats an ESA.
    • The protest march of about nine kilometers highlights demands for a physical survey of land to exclude human settlements and cultivated areas from ESA boundaries.

    Historical Context and Developments:

    • The movement for conserving the Western Ghats began with a significant march in 1987, involving environmentalists and scientists.
    • An expert panel, the Western Ghats Ecology Expert Panel (WGEEP), was established in 2010 under Prof. Madhav Gadgil to recommend conservation measures. The panel's report was submitted in 2011 but faced delays and resistance before release.
    • The WGEEP report advocated for a “people-oriented model of development,” emphasizing financial incentives for farmers, similar to the Australian Soil Carbon Accreditation Scheme.

    Recommendations and Opposition:

    • A High-Level Working Group (HLWG) was later formed to prepare an actionable plan, submitting a report in 2013 that proposed declaring 37% of the Western Ghats, approximately 59,940 sq km, as an ESA, with Karnataka's share being 20,668 sq km.
    • Proposed restrictions include bans on mining, red-category industries, and limitations on housing projects, which have been opposed by local state governments, especially in Kerala and Karnataka.

    Current Notification and Public Response:

    • The most recent draft notification (July 27, 2026) proposes a total ESA area of 56,825.7 sq km, affecting 1,449 villages across multiple districts in Karnataka.
    • The public has raised fears over existing hardships under current forest laws, which limit access to basic amenities.

    Comparative Responses:

    • Residents are calling for a similar approach to that of Kerala, which reduced its ESA area significantly after conducting a physical survey, thereby minimizing impact on agricultural and urban development.

    Legislative Actions and Future Steps:

    • The Karnataka Cabinet announced a special legislative session to discuss the draft notification and concerns over the Kasturirangan report. The Cabinet is poised to oppose the ESA draft as articulated by various leaders.

    Socioeconomic Concerns:

    • Farmers, particularly those cultivating plantation crops, express concerns about restrictions on fertilizers and agricultural practices, fearing negative impacts on their livelihoods.
    • Community activists and organizations are organizing protests and collecting objections to influence government decisions regarding the ESA.

    Judicial and Administrative Aspects:

    • Ongoing legal battles over the disclosure of WGEEP's comprehensive report highlight struggles for transparency in environmental governance.
    • Voter mobilization and political engagement have intensified as part of the push to prioritize local livelihoods in ESA discussions.

    Environmental Considerations:

    • The debate over ESA designation places ecological preservation against economic and social realities faced by residents in the Western Ghats, emphasizing the need for balanced conservation strategies.

    Conclusion: The issue surrounding the proposed ESA reflects deep-rooted tensions between ecological conservation efforts and the socioeconomic needs of communities reliant on agriculture in the Western Ghats region. The outcomes of ongoing legislative discussions and public protests will significantly impact both environmental policies and local livelihoods in the area.

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    Overview of Geothermal Energy

    • Definition: Geothermal energy is derived from the Earth's internal heat, considered a renewable and low-carbon energy source.
    • Significance: Provides a continuous and reliable source of energy, unlike solar and wind, which are weather-dependent.

    National Policy on Geothermal Energy

    • Objective: To integrate geothermal energy as a significant component of India's renewable energy framework, contributing to the target of net-zero emissions by 2070.
    • Implementation: The Ministry of New and Renewable Energy (MNRE) is the nodal ministry responsible for executing this policy, notified in September 2025.

    Recent Developments

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    Economic Value of Mangrove Ecosystems

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    Economic Valuation of Ecosystem Services

    • Total Economic Value (TEV): ₹2,485.38 crore (approx. $289 million).
    • Value per hectare: ₹1.83 crore.
    • Breakdown of Economic Value:
      • Provisioning services (Fish, Crab, Shrimp): ₹3.47 crore
      • Coastal protection function: ₹147.17 crore
      • Nutrient cycling: ₹10.53 crore
      • Oxygen regulation: ₹181.22 crore
      • Carbon sequestration (annual flow): ₹26.86 crore
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      • Recreational and tourism value: ₹484.25 crore
      • Carbon stock value (vegetation): ₹387.77 crore
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    Ecosystem Significance

    • Ecological Importance: Home to diverse species, supports fisheries productivity, and acts as a vital coastal protection barrier.
    • Climate Regulation: Critical for carbon sequestration, the average carbon stock in mangrove vegetation is 79.449 tonnes per hectare (approximately 291.33 tonnes of CO2).
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    International Context

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    • Emphasizes the need for comprehensive assessments of mangrove ecosystems amid increasing climate change impacts and biodiversity loss.

    Research Background

    • Study Conducted by: M. Balasubramanian, Centre for Ecological Economics and Natural Resources, Bengaluru.
    • Data Collection: Involves primary data from 302 households in five mangrove-dependent villages (MGR Thittu, Kalaignar Nagar, Chinnavaikal, Patriadi, and Mudasalodai).
    • Funded by the Deputy Conservator of Forests, Forest Genetics Division, Coimbatore.

    Policy Recommendations

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    • Recognition of Mangroves: Considered critical for climate adaptation and disaster risk reduction.
    • Blue Carbon Financing: Development of carbon credit programs and Payment for Ecosystem Services (PES) schemes.
    • Natural Capital Accounting: Emphasize incorporation in Green GDP frameworks.
    • Sustainable Livelihoods: Promote eco-tourism, community-based conservation, and fisheries for long-term ecological management.

    Conclusion

    This study underlines the importance of mangroves, not just ecologically but also economically. It calls for incorporating their value in broader frameworks to not only safeguard these ecosystems but also leverage their benefits for community livelihoods and climate resilience. The data presented is crucial for policy makers and environmental planners to justify protective measures for mangrove ecosystems.

    Green Highways Excellence Awards 2026 Announced
    Environment and Ecology03-Sep-2026

    Green Highways Excellence Awards 2026 Announced

    Green Highways Excellence Awards 2026

    Overview:

    • The National Highways Authority of India (NHAI) has launched the 'Green Highways Excellence Awards 2026' to promote excellence in adopting sustainable green practices in national highway projects.

    Purpose:

    • The awards aim to recognize best practices in green and plantation management along national highways, enhancing healthy plantation practices.

    Categories of Awards:

    1. Roadside Plantation

      • 1st Prize: Expansion of Chilakaluripet Bypass on NH 16, Andhra Pradesh.
      • 2nd Prize: Vadodara-Kim Expressway section, Vadodara-Mumbai Expressway, Gujarat.
      • 3rd Prize: Gagariya-Bakhasar and Satta-Gandhav sections of NH-925, Rajasthan.
      • Consolation Prize: Annual maintenance of NH-210 and NH-336 sections, including incident management.
    2. Median Plantation

    India's Commitment to Green Shipping
    Environment and Ecology03-Sep-2026

    India's Commitment to Green Shipping

    Key Highlights on Green Shipping Initiatives in India

    Government Initiatives and Policies

    • Minister Involvement: Union Minister Sarbananda Sonowal emphasized the need for India's ports to rapidly prepare for green fuels as part of the transition to low-carbon maritime trade.
    • Green Shipping Corridor: India aims to establish a zero-emission shipping corridor as a significant step towards carbon-neutral maritime operations by 2026.
    • National Centre of Excellence for Green Ports and Shipping (NCOEGPS): This initiative aims to assist the Ministry of Ports, Shipping, and Waterways in advancing carbon-free operations in the maritime sector.

    Key Actions and Developments

    • Focus Areas: The review included progress on proposed green shipping corridors and port preparations for alternative fuels, showcasing the government's commitment to cleaner maritime trade routes.
    • Rocky Mountain Institute (RMI): Presented efforts to develop low and zero-emission shipping corridors and accelerate the adoption of cleaner fuels and technologies within the shipping ecosystem.
    Urgent UNEP Report on Global Warming
    Environment and Ecology03-Sep-2026

    Urgent UNEP Report on Global Warming

    Summary of Key Points

    Global Climate Goals and Warming Limits

    • The UNEP has outlined an "overshoot, peak and decline" pathway to address global warming, acknowledging that breaching the 1.5°C limit set by the 2015 Paris Agreement is now unavoidable.
    • The report, titled "Limiting Overshoot," asserts global warming will surpass 1.5°C in the near future, with projections indicating a peak warming of 1.8°C if countries adhere to their national climate plans.
    • Current policies project a temperature rise of about 2.6°C by 2100 (range: 1.9–3.6°C).

    COP30 Decisions

    • The 30th UN Climate Change Conference (COP30) in 2025 acknowledged the likelihood of a temporary overshoot, leading to the “Global Mutirão” decision.
    • Countries have pledged to manage the size and duration of the overshoot and address adaptation gaps with significant emission cuts and nature-based solutions like reforestation.

    Impacts of Global Warming

    Capacity

    Geothermal Resource Potential

    • Theoretical Capacity: India has an estimated geothermal energy potential of approximately 10.6 GW.
    • Geological Mapping: The Geological Survey of India (GSI) has identified 381 hot springs and 10 geothermal provinces, including the Himalayan and Naga-Lushai regions.

    Technology and Research Initiatives

    • Enhanced Geothermal Systems (EGS): Advanced technologies like EGS and Advanced Geothermal Systems (AGS) are being explored to expand geothermal energy opportunities.
    • Pilot Projects: Several pilot projects are underway, including:
      • A project in Ankleshwar, Gujarat, retrofitting abandoned oil and gas wells for power generation.
      • A demonstration project in Gandhinagar, Gujarat, integrating solar and geothermal energy.
      • Research in Tawang, Arunachal Pradesh, assessing geothermal resources.

    International Collaborations

    • Partnerships: India collaborates with countries like Australia and Iceland to enhance geothermal energy research and technology development.
    • Bilateral Agreements: Agreements with Saudi Arabia include geothermal energy as a key area of cooperation.

    Economic and Environmental Impact

    • Energy Security: Geothermal energy contributes to energy security and reduces reliance on fossil fuels.
    • Applications: Beyond electricity generation, geothermal energy can be utilized for heating, cooling, and agricultural purposes.

    Future Prospects

    • Expansion Plans: The government aims to broaden the scope of geothermal energy applications, enhancing its role in India's renewable energy mix.
    • Ecosystem Development: Ongoing research and development initiatives are crucial for the commercial viability of geothermal energy in India.

    Conclusion

    Geothermal energy is emerging as a vital component of India's renewable energy strategy, with significant potential for sustainable development and energy security. The commitment to harness geothermal resources reflects India's holistic approach towards achieving its climate goals and diversifying its energy portfolio.

    • 1st Prize: Expansion of NH 163, Hyderabad-Yadgiri section.
    • 2nd Prize: Vadodara-Mumbai Expressway, Sanpa to Padra section, Gujarat.
    • 3rd Prize: Varanasi Ring Road, Package-I, NH-31, Uttar Pradesh.
  • Plot Plantation

    • 1st Prize: Jamtha Clover Leaf on NH-44, Nagpur.
    • 2nd Prize: Monetization of publically funded operational national highway projects under tolling.
    • 3rd Prize: Miyawaki plantation at the Lucknow-Ayodhya Road and Lucknow Outer Ring Road junction, Uttar Pradesh.
  • Participation and Evaluation:

    • NHAI received 86 nominations from various stakeholders including regional offices, concessionaires, contractors, governmental agencies, NGOs, and private agencies involved in plantation projects.
    • Categories received nominations as follows: 27 for roadside, 36 for median, and 23 for plot plantations.
    • Each nomination included presentations with geo-tagged photos, drone videos, site-specific plantation plans, and survival rate data of plants.
    • After initial screening, 15 nominations were shortlisted for final evaluation, focusing on survival rates of plantations, site-specific plans, timing of works, and quality of planting materials.

    Judging Criteria:

    • Evaluation was based on a comprehensive framework emphasizing:
      • Survival rates of gardens.
      • Specific plantation work plans.
      • Quality of planting materials.
      • Implementation adherence to approved designs.
      • Diversity and suitability of species used.
    • Special emphasis was placed on the potential for replication across the national highway network, sustainability, and effectiveness.

    Policy Context:

    • The establishment of the 'Green Highways Excellence Awards' aligns with the Green Highways Policy, 2015, reinforcing NHAI's commitment to environmental sustainability alongside national highway development.

    Significance:

    • These awards strengthen NHAI's dedication to sustainable practices in infrastructure development, contributing to both environmental preservation and national highway enhancement.
  • Port Authorities Updates:
    • Dinhayal Port Authority, Paradip Port Authority, V.O. Chidambaranar Port Authority: Reported progress on establishing green fuel bunkering hubs.
    • Kamarajar Port Limited: Implemented shore power supply systems at coal terminals to reduce emissions by allowing ships to use onshore electricity instead of onboard engines.
  • Environmental Goals

    • Sustainable Development: The initiatives underscore the collaboration between the government, ports, research institutes, and knowledge partners to achieve sustainability targets in India's maritime sector.
    • Commitment to Clean Shipping: Sonowal reiterated the importance of green shipping in positioning India as a leading maritime power, stating that collective efforts would drive global changes in the sector.

    Economic and Technological Implications

    • Infrastructure Development: Steps taken for strengthening infrastructure for alternative and green marine fuels, enhancing competitiveness and sustainability in the maritime sector.
    • Future Preparedness: The initiatives highlight the aim to create a more competitive and future-ready maritime industry through cleaner operations.

    Conclusion

    The government's focus on green shipping and the establishment of sustainable practices in the maritime sector reflect India's ambition to lead in global carbon neutrality efforts. The collaborative approach involving various stakeholders is crucial for the successful implementation of these green initiatives.

    • Prolonged warming above 1.5°C could lead to severe consequences:
      • Faster sea-level rise
      • Coral reef collapse
      • Loss of glaciers with a decline exceeding 25% by 2100
      • A potential reduction of 14% in global food production by 2050 without effective adaption.
      • Increased risks of tipping points in critical environmental systems, such as ice sheets and ocean currents.

    Carbon Emissions Insights

    • The UNEP report indicates that every five years of high emissions contributes an additional 0.1°C to peak warming. To counter this, around 220 billion tonnes of CO2 would need to be removed from the atmosphere.
    • Effective carbon dioxide removal must complement emission reductions, with peak warming needing to stay below 2°C for significant cooling back to the 1.5°C limit.

    Methane Emissions

    • The report highlights methane as a critical factor, responsible for approximately 0.5°C of current warming.
    • Proposals include reducing ~60–70 million tonnes of methane to achieve a cooling effect equivalent to removing 220 billion tonnes of CO2.
    • The Global Methane Pledge, endorsed by 155 countries, aims for a 30% reduction in anthropogenic methane below 2020 levels by 2030. Major emitters like India, China, Russia, and Iran are not signatories.

    Institutional Responses and Economic Considerations

    • Calls for rapid emission cuts are reinforced by UN Secretary-General António Guterres, who warns that climate phenomena (e.g., heat waves, wildfires, floods) underscore the urgency of addressing emissions.
    • Political complications arise from the U.S. formally exiting the Paris Agreement and related international frameworks, alongside ongoing global energy market disruptions due to geopolitical conflicts, particularly affecting oil supply.

    Conclusion

    • The UNEP report serves as a critical reminder of the urgent need for cohesive global action. It emphasizes that while the 1.5°C target remains vital, an adaptive and comprehensive approach must be adopted to mitigate and potentially reverse the adverse effects of climate change.