Environment

Delhi Heat Crisis and the Urban Heat Island Effect

Introduction

Delhi and the National Capital Region (NCR) are witnessing increasingly severe and prolonged heatwaves, with temperatures remaining dangerously high even during the night. Rapid urbanisation, shrinking green cover, expanding concrete infrastructure, and rising dependence on air conditioning have intensified the Urban Heat Island (UHI) Effect.

The city is increasingly experiencing a “heat re-trap” phenomenon, where heat absorbed during the day is continuously retained and re-emitted by buildings, roads, and urban surfaces, preventing nighttime cooling.

What is the Urban Heat Island Effect?

The Urban Heat Island Effect refers to a phenomenon where urban areas become significantly warmer than surrounding rural regions due to human activities and heat-absorbing infrastructure.

Cities absorb and retain more heat because of:

Concrete and asphalt surfaces
Glass and steel buildings
Vehicular emissions
Air conditioner exhaust
Reduced vegetation and water bodies

As a result, urban temperatures remain elevated even after sunset.

Why Delhi is Retaining More Heat

Heat-Absorbing Infrastructure

Delhi’s urban expansion is dominated by:

Concrete
Asphalt roads
Steel structures
Glass buildings

These materials absorb solar heat rapidly during the day and release it slowly at night.

In densely built regions, surface temperatures can rise to 50–60°C during peak afternoons.

Glass-Dominated Architecture

Modern commercial buildings in areas like Gurgaon and Noida rely heavily on glass facades.

Glass structures:

Allow more solar radiation indoors
Increase indoor temperatures
Raise dependence on air conditioning

This creates higher energy consumption and additional heat release into the outdoor environment.

Vehicular Heat and Thermal Corridors

Heavy traffic contributes substantial waste heat and emissions.

Major transport routes such as NH-48 act as:

Continuous heat sources
Thermal corridors altering local microclimates

Vehicular congestion further worsens urban warming.

Poor Urban Planning

High-density construction and narrow streets restrict natural ventilation.

Traditional cooling features such as:

Courtyards
Shaded streets
Ventilation corridors
Open spaces

have largely disappeared from modern urban layouts.

This causes stagnant hot air to accumulate within the city.

How Cooling Systems Worsen the Crisis

Air Conditioners and Outdoor Heat

While air conditioners cool indoor spaces, they expel heat outdoors.

In densely populated areas, AC exhaust can raise surrounding temperatures by around 1–2°C.

Urban Heat Feedback Loop

Rising temperatures increase dependence on cooling systems, which then release more waste heat outdoors.

This creates a vicious cycle: 
Higher heat → More AC use → More outdoor heat → Even higher temperatures

Rising Electricity Demand

Delhi’s summer electricity demand has crossed 8,000 MW, with cooling systems accounting for a major share.

Future cooling demand is expected to rise sharply by 2050, increasing pressure on power grids and raising risks of electricity shortages during heatwaves.

Economic and Ecological Impact

Economic Losses

India is estimated to lose over $100 billion annually due to:

Reduced labour productivity
Heat-related illness
Supply chain disruptions

Industrial productivity may decline by 2–3% for every degree rise above optimal temperature levels.

Loss of Green and Blue Infrastructure

Delhi has witnessed:

Shrinking green cover
Wetland degradation
Damage to Yamuna floodplains

This weakens the city’s natural cooling mechanisms.

Reduced Evapotranspiration

Vegetation and water bodies cool the environment through evapotranspiration.

Their decline reduces natural temperature regulation and intensifies heat stress.

Measures Needed to Address the Crisis

Heat-Resilient Infrastructure

Cities should adopt:

Cool roofs
Reflective coatings
High-albedo materials

These surfaces absorb less heat and lower urban temperatures.

Passive Cooling Design

Buildings should incorporate:

Natural ventilation
Insulation
Cross-ventilation
Shading systems

to reduce dependence on energy-intensive cooling.

Better Urban Planning

Urban planning should:

Restore ventilation corridors
Improve street orientation
Reduce excessive dense construction

to improve airflow across the city.

Expanding Green and Blue Infrastructure

Governments must:

Expand urban forests
Protect wetlands
Restore water bodies
Increase public parks

to improve ecological cooling.

Sustainable Mobility and Efficient Cooling

Measures include:

Public transport expansion
Electric mobility
Energy-efficient appliances
District cooling systems

to reduce waste heat generation.

Conclusion

Delhi’s heat crisis demonstrates how rapid urbanisation, unsustainable infrastructure, and climate change are interacting to create dangerous urban environments.

The Urban Heat Island Effect is no longer only an environmental issue but also a major public health, economic, and governance challenge. Addressing it will require climate-sensitive urban planning, ecological restoration, energy-efficient infrastructure, and stronger heat resilience policies.

Babesia and Babesiosis

Why in News?

Two lion cubs recently died in the Gir forest region of Gir National Park due to a suspected Babesia infection, raising concerns about wildlife health and tick-borne diseases.

About Babesia

Babesia is a genus of microscopic protozoan parasites that infect the red blood cells (RBCs) of animals and humans, causing a disease known as babesiosis.

The parasite destroys red blood cells, leading to anemia and other serious health complications in severe cases.

Transmission of Babesia

The disease is mainly transmitted through the bite of infected ticks, especially:

Ixodes Tick (Deer Tick)

Major vector of Babesia
Also transmits Lyme disease

Babesiosis is more common in:

Cattle
Dogs
Wild mammals
Occasionally humans

Human infections generally occur in areas where ticks are abundant.

Geographical Distribution

Babesia infections are commonly reported in:

The Americas (especially North-East America)
Europe
Asia

The disease is increasingly being monitored due to changing climatic conditions that favour tick survival and spread.

Symptoms of Babesiosis

Mild Symptoms

Fever
Chills
Fatigue
Muscle pain

Severe Symptoms

Hemolytic anemia
Respiratory failure
Kidney failure
Liver complications
Heart problems
Coagulopathy

Many infected individuals may remain asymptomatic or develop only mild symptoms.

Is Babesiosis Contagious?

Babesiosis does not spread directly from person to person.

However, rare transmission may occur:

From mother to fetus during pregnancy
Through blood transfusion

Treatment

Treatment usually involves antimicrobial combination therapy.

Commonly Recommended Drugs

Atovaquone (antiparasitic)
Azithromycin (antibiotic)

Severe infections may require hospitalization and intensive medical support.

Impact on Wildlife

The suspected deaths of lion cubs in Gir highlight the vulnerability of wildlife populations to infectious diseases.

Concerns

Threat to endangered species
Spread through tick vectors
Impact on ecosystem balance
Need for wildlife disease surveillance

Wildlife diseases are becoming an important aspect of conservation biology and ecosystem management.

About Gir National Park

Gir National Park is the only natural habitat of the Asiatic Lion in the world.

Key Features

Located in Gujarat
Known for Asiatic lion conservation
Dry deciduous forest ecosystem
Rich biodiversity

Disease outbreaks in protected areas can significantly affect conservation efforts.

Conclusion

Babesia is a dangerous tick-borne protozoan parasite affecting both animals and humans. The recent suspected infection in Gir lion cubs underlines the growing importance of wildlife disease monitoring, vector control, and ecosystem health management. With climate change and habitat interactions increasing disease risks, stronger surveillance and conservation strategies are becoming essential.

Barn Swallow – Migratory Bird Showing Signs of Permanent Settlement in Manipur

Why in News?

A recent scientific study has suggested that descendants of migratory Barn Swallows in Manipur’s Imphal Valley may have gradually stopped undertaking long-distance seasonal migration and settled permanently in the region. The finding is significant because it indicates possible behavioural adaptation among migratory birds due to ecological and climatic changes.

The study has attracted attention among ornithologists and environmental researchers as changes in migratory behaviour can provide important insights into climate change, habitat suitability, and ecosystem dynamics.

About Barn Swallow

The Barn Swallow is one of the most widely distributed migratory bird species in the world. It belongs to the swallow family (Hirundinidae) and is known for its graceful flight and long-distance migration.

Scientific Name

Hirundo rustica

Type

Migratory passerine bird

Passerines are commonly referred to as “perching birds” or songbirds and constitute the largest order of birds globally.

Habitat and Distribution

The Barn Swallow has an extensive global distribution.

Distribution

Breeds throughout the Northern Hemisphere
Winters in much of the Southern Hemisphere

It is found across:

Europe
Asia
Africa
North America

The species is regarded as the most abundant swallow species in the world.

Habitat

Barn Swallows inhabit:

Open grasslands
Agricultural fields
Wetlands
Meadows
Marshes
Parks
Roadside edges
Coastal regions

They are commonly observed flying low over fields and water bodies while feeding on insects.

Physical Features

The Barn Swallow possesses several distinctive features that make it easily identifiable.

Body Structure

Small to medium-sized bird
Length ranges between 5.5 and 7 inches
Wingspan ranges between 12.5 and 13.5 inches

Colouration

Upperparts are dark iridescent blue-black
Underparts are buff or cinnamon coloured
Dark chestnut throat
Narrow blue-black band separating the throat and belly

Tail and Wings

Long deeply forked tail
White spots visible during flight
Long pointed wings adapted for sustained flight and migration

Its streamlined body enables efficient long-distance travel.

Migration Behaviour

Barn Swallows are famous for seasonal migration between breeding and wintering grounds.

Importance of Migration

Migration helps birds:

Avoid harsh climatic conditions
Access food resources
Improve breeding success
Reduce competition

The species usually travels thousands of kilometres annually between continents.

However, the recent study from Manipur indicates that some populations may now be reducing or abandoning migration altogether.

Significance of the Study

The finding from Imphal Valley is ecologically important because it may indicate:

Evolutionary adaptation
Ecological flexibility
Climate-induced behavioural changes

Researchers believe that:

Suitable climatic conditions
Stable food availability
Availability of nesting sites
Reduced environmental stress

may have encouraged the birds to remain permanently in the region.

Link with Climate Change

Changes in migratory behaviour are increasingly being linked with:

Global warming
Altered rainfall patterns
Shifts in seasonal cycles
Habitat transformation

Such studies are valuable for understanding how species respond to environmental changes.

Ecological Importance

Barn Swallows play an important ecological role.

Natural Pest Control

They feed primarily on:

Flies
Mosquitoes
Beetles
Other flying insects

By consuming large numbers of insects, they help maintain ecological balance and support agriculture.

Indicator Species

Bird migration patterns often serve as indicators of:

Climate change
Environmental health
Habitat quality

Any alteration in migration behaviour may therefore signal broader ecological changes.

Threats Faced

Although globally widespread, Barn Swallows face several local threats:

Habitat destruction
Urbanisation
Excessive pesticide use
Decline in insect populations
Wetland degradation

The reduction of insects due to chemical pesticides directly impacts the food availability of insectivorous birds.

Conservation Status

IUCN Red List

Least Concern (LC)

The species continues to maintain a large global population. However, continuous monitoring is important due to changing environmental conditions affecting migratory birds worldwide.

Importance for India

India lies along major migratory bird routes such as the Central Asian Flyway. The study from Manipur highlights:

India’s importance as a migratory bird habitat
Need for wetland conservation
Importance of climate-resilient ecosystems

Protecting bird habitats is essential for maintaining biodiversity and ecological stability.

Conclusion

The recent observation of Barn Swallows settling permanently in Manipur’s Imphal Valley represents an important development in migration ecology. The finding demonstrates how species may adapt to changing environmental conditions over time. As climate change increasingly alters ecosystems worldwide, studying migratory birds such as the Barn Swallow can provide valuable insights into biodiversity conservation and ecological transformation. Conserving habitats and maintaining ecological balance will remain crucial for protecting migratory bird populations in the future.

Santiaguito Volcano Eruption: A Persistent Volcanic Threat

Introduction

Recently, a group of hikers narrowly escaped danger as the Santiaguito Volcano erupted violently, hurling rocks and ash into the air. The incident highlights the continuous volcanic activity in the region and the associated risks to human life and the environment.

About Santiaguito Volcano

Santiaguito Volcano is an active volcanic complex located in western Guatemala, near the city of Quetzaltenango. It was formed following the catastrophic 1902 eruption of the Santa María Volcano, which destroyed the original summit and caused around 5,000 deaths, making it one of the largest eruptions of the 20th century.

Post-eruption, lava domes began forming inside the fवशाल crater. Santiaguito, the youngest of these domes, emerged around 1922 and has been growing continuously since then. Today, it forms part of a massive lava-dome complex that is among the most active volcanic systems globally.

Key Features (Infographic)

Type: Lava-dome volcanic complex
Height: ~2,500 m
Location: Western Guatemala
Formation: Post-1902 Santa María eruption
Structure: 4 craters (1 active)
Activity: Frequent ash, gas, and minor explosions

Nature of Volcanic Activity

Unlike typical cone-shaped volcanoes, Santiaguito appears as a rugged mass with multiple peaks due to its dome structure. It frequently emits ash clouds, smoke, and occasional lava ﬂows. At times, it also produces pyroclastic ﬂows—fast-moving currents of hot gas and volcanic matter—which pose serious hazards.

Most eruptions are minor, but the volcano remains unpredictable. Its continuous activity makes it one of the most closely monitored volcanic systems in Central America.

Major Eruptions & Impact

1929 Eruption: Deadliest event, over 2,500 fatalities
2010 Explosion: 10 deaths due to falling rocks
Recent Incident: Hikers forced to ﬂee due to sudden eruption

These events underline the persistent danger posed by the volcano, especially to nearby settlements and tourists.

Signiﬁcance

The Santiaguito Volcano serves as an important case study in volcanology, particularly for understanding lava-dome growth and eruption patterns. It also highlights the need for:

Continuous monitoring and early warning systems
Disaster preparedness and evacuation planning
Regulation of tourism in high-risk zones

Conclusion

The recent eruption of Santiaguito Volcano is a reminder of nature’s unpredictability and power. While it offers valuable scientiﬁc insights, it also demands robust disaster management strategies to mitigate risks and safeguard lives.

Tuvalu – Sinking Nation and Climate Crisis

Why in News

The Paciﬁc island nation of Tuvalu is facing an existential threat due to rising sea levels caused by climate change. Large parts of the country risk submergence by the end of the 21st century, prompting efforts to secure livelihoods, preserve sovereignty, and plan for possible displacement.

About Tuvalu

Tuvalu, formerly known as the Ellice Islands, is a small Polynesian island country located in the west-central Paciﬁc Ocean. It lies roughly midway between Australia and Hawaii, with Kiribati to its north and Fiji to its south.

With a total land area of just 26 sq. km, Tuvalu is the fourth smallest country in the world. It consists of nine islands, including four reef islands and ﬁve coral atolls. The capital, Funafuti, is the most populous atoll and serves as the administrative and economic centre.

A deﬁning feature of Tuvalu is its extremely low elevation—no point is higher than 4.5 metres above sea level. Additionally, the country has no rivers, and its climate is tropical, hot, and rainy.

Political System

Tuvalu gained independence from the United Kingdom in 1978. It functions as a parliamentary democracy under a constitutional monarchy and is part of the Commonwealth Realm.

Charles III is recognized as the head of state and is represented by a Governor-General.

The political system is unique due to the absence of formal political parties. The Prime Minister is elected by members of the legislature.

Economy

Tuvalu’s economy is fragile and aid-dependent:

Majority of people engage in subsistence farming and ﬁshing
Heavy reliance on remittances from overseas workers
Limited exports such as copra
Revenue from ﬁshing licenses and stamp sales
Signiﬁcant dependence on foreign aid and imports

Due to limited natural resources and geographic isolation, economic diversiﬁcation remains a challenge.

Climate Change Threat

Tuvalu is considered one of the most vulnerable countries to climate change and sea-level rise:

Submergence Risk: Rising sea levels threaten to inundate large parts of the islands
Saltwater Intrusion: Contamination of groundwater affects drinking water and agriculture
Coastal Erosion: Loss of land and infrastructure
Extreme Weather Events: Increased frequency of cyclones and ﬂooding

The country’s very existence is under threat, raising serious concerns about climate refugees

and loss of national sovereignty.

Global Signiﬁcance

Tuvalu represents a symbol of climate injustice:

Contributes negligibly to global emissions but suffers disproportionately
Raises legal and ethical questions about statehood if territory disappears
Has advocated strongly in global forums like the United Nations for urgent climate action

It has also explored innovative solutions such as creating a “digital nation” to preserve its identity and governance even if physical land is lost.

Way Forward

Global Climate Action: Reduction in greenhouse gas emissions under international agreements
Climate Financing: Support from developed nations for adaptation and resilience
Planned Relocation Policies: Migration with dignity and legal safeguards
Technological Solutions: Coastal protection, land reclamation, and digital governance

Conclusion

Tuvalu’s crisis is a stark reminder of the real and immediate impacts of climate change. It highlights the urgent need for collective global responsibility, equitable climate policies, and sustainable development to protect vulnerable nations and communities.

Tribal Ecological Communitarianism as a Sustainable Development Model

Tribal Ecological Communitarianism (TEC) is emerging as an alternative model of sustainable development that challenges mainstream economic systems driven by excessive capital accumulation and proﬁt maximisation. Rooted in indigenous traditions, TEC combines collective ownership, ecological stewardship, cooperative labour, and equitable resource distribution with a strong cultural relationship with nature.

The model highlights how tribal communities have historically maintained ecological balance while ensuring social security and sustainable livelihoods.

What is Tribal Ecological Communitarianism?

TEC is a socio-economic framework where communities collectively manage natural resources and organise economic activities in harmony with ecological systems.

Unlike market-centric models focused on individual ownership and extraction, TEC emphasises:

Collective welfare
Ecological responsibility
Intergenerational sustainability
Community-based decision-making

Features of Tribal Ecological Communitarianism

Collective Ownership

Land, forests, water bodies, and natural resources are held collectively by the community rather than by private individuals.

Ecological Stewardship

Humans are viewed as custodians of nature with a moral responsibility to preserve ecosystems for future generations.

Cooperative Labour

Agriculture, irrigation, construction, and forest management are often carried out through communal cooperation instead of wage-based labour systems.

Sacred Relationship with Nature

Many tribal traditions protect forests, rivers, mountains, and wildlife through cultural taboos and sacred practices.

Equitable Distribution

Food, wealth, and community resources are distributed relatively equally to ensure collective social security and survival.

Signiﬁcance of TEC

Resource Sovereignty

Community control over natural resources ensures sustainable management of forests, land, and water systems according to local needs.

Climate Mitigation

Traditional tribal conservation practices help protect forests and peatlands, which function as important carbon sinks and Natural Climate Solutions.

Preservation of Indigenous Knowledge

Tribal communities possess valuable ethno-ecological knowledge regarding medicinal plants, biodiversity, drought-resistant crops, and sustainable farming practices.

Eco-Pedagogy

Environmental literacy is transmitted through oral traditions, rituals, and lived cultural practices, promoting ecological consciousness from childhood.

Biomimetic Development

Traditional tribal housing and irrigation systems often imitate natural ecological patterns, reducing habitat fragmentation and environmental degradation.

Challenges Associated with TEC

Scalability Issues

Communal systems based on trust and close social ties become difficult to sustain in large urbanised societies.

Limited Access to Credit

Collective ownership structures often prevent individuals from using land as collateral for institutional loans.

Youth Migration

Educated tribal youth increasingly migrate toward urban centres and market-driven employment opportunities.

Administrative Conﬂicts

Traditional tribal governance institutions sometimes face jurisdictional conﬂicts with state forest departments and bureaucratic agencies.

Market Pressures

Commercial agriculture and market volatility encourage replacement of diverse traditional crops with monoculture cash crops.

Government Initiatives Supporting TEC

Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act (Forest Rights Act)

Empowers Gram Sabhas to protect and manage community forest resources.

Panchayats (Extension to Scheduled Areas) Act (PESA)

Strengthens tribal self-governance over land, water, forests, and local minerals.

Van Dhan Yojana

Promotes community-based value addition and marketing of minor forest produce.

MSP for Minor Forest Produce

Provides minimum price support to protect tribal gatherers from exploitation by middlemen.

Dharti Aba Janjatiya Gram Utkarsh Abhiyan

Supports tribal infrastructure development while preserving cultural heritage.

Adi Karmayogi Abhiyan

Trains tribal grassroots leaders for participatory governance rooted in indigenous traditions.

Relevance in Contemporary Development

TEC aligns closely with modern concepts such as:

Sustainable development
Climate resilience
Circular economy
Community-based conservation
Environmental justice

At a time of climate change, biodiversity loss, and ecological degradation, tribal ecological practices offer important lessons for balancing development with environmental sustainability.

Conclusion

Tribal Ecological Communitarianism presents a holistic development framework rooted in sustainability, collective welfare, and ecological harmony. While challenges related to scalability, modernisation, and market integration remain signiﬁcant, TEC provides valuable insights for creating inclusive and environmentally sustainable development pathways.

Strengthening tribal rights, protecting indigenous knowledge, and integrating community-led

conservation into national policies can contribute signiﬁcantly to climate resilience and ecological security.

State of Global Marine Conservation as per WDPCA

The latest ﬁndings from the World Database on Protected and Conserved Areas (WDPCA) highlight both progress and persistent gaps in global marine conservation efforts. According to recent data, nearly 10% of the world’s oceans are now under some form of protection, marking an increase of 1.41% since 2024. However, experts warn that current conservation efforts remain insufficient to achieve global biodiversity targets under the Kunming-Montreal Global Biodiversity Framework (KMGBF).

The report underscores the urgent need for stronger marine governance, protection of high seas biodiversity, and expansion of highly protected marine ecosystems.

About WDPCA

The World Database on Protected and Conserved Areas is a joint initiative of:

United Nations Environment Programme (UNEP)
International Union for Conservation of Nature (IUCN)

It is managed by the UNEP World Conservation Monitoring Centre (UNEP-WCMC) based in Cambridge.

Objectives

The database:

Tracks terrestrial and marine protected areas globally
Monitors progress toward biodiversity conservation goals
Supports implementation of the Kunming-Montreal Global Biodiversity Framework

Monthly Updates

The WDPCA is updated monthly to reﬂect:

Newly designated protected areas
Changes in conservation status
Governance and management updates

Key Findings on Marine Conservation

Global Marine Protection Reaches 10%

Around 10.01% of the global ocean is now covered under protected and conserved areas.

This represents progress compared to previous years but remains signiﬁcantly below the global “30×30” target.

Importance of High Seas

The report highlights that:

Around 95% of Earth’s habitable space by volume lies within the oceans and high seas.

Despite their ecological importance:

Only 1.66% of high seas areas beyond national jurisdiction are currently under conservation management.

This reﬂects a major governance and conservation gap.

Largest Marine Protected Area

In 2025, Tainui Atea became the world’s largest Marine Protected Area (MPA), covering around 4.5 million square kilometres.

The creation of such mega-MPAs demonstrates increasing global recognition of ocean conservation priorities.

The 30×30 Global Target

Under the Kunming-Montreal Global Biodiversity Framework, countries committed to conserving:

30% of the Earth’s land and oceans by 2030.

Current marine protection levels indicate that:

Ocean protection must nearly triple within this decade to achieve the target.

Quality of Protection Remains Weak

A major concern highlighted by WDPCA is that only:

Around 2.8%–3.3% of oceans are categorised as “fully or highly protected.” In such zones:
Industrial ﬁshing
Deep-sea mining
Extractive activities

are either heavily restricted or completely prohibited.

Thus, mere designation of protected areas does not always ensure effective biodiversity conservation.

Key Biodiversity Areas (KBAs)

The report also highlights conservation gaps concerning Key Biodiversity Areas (KBAs).

What are KBAs?

Key Biodiversity Areas are ecologically important sites that contribute signiﬁcantly to the persistence of global biodiversity.

Existing Gaps

Around:

30%–34% of identiﬁed marine KBAs still lie outside protected or conserved areas.

This exposes vulnerable ecosystems and species to overexploitation and habitat degradation.

Relation with Global Biodiversity Targets

Aichi Biodiversity Targets

Target 11 of the Aichi Biodiversity Targets (2011–2020) aimed to conserve at least 10% of coastal and marine areas.

Although the world has now crossed this threshold, conservation experts argue that:

Quantity alone is insufficient
Effective management and ecological representation are equally important

Challenges in Marine Conservation

Weak High Seas Governance

Areas beyond national jurisdiction lack strong enforcement mechanisms.

Overﬁshing and Deep-Sea Exploitation

Industrial ﬁshing and emerging deep-sea mining activities threaten marine ecosystems.

Climate Change

Ocean warming, acidiﬁcation, and coral bleaching continue to damage marine biodiversity.

Limited Enforcement Capacity

Several marine protected areas exist only “on paper” without effective monitoring or implementation.

Way Forward

Expand Highly Protected MPAs

Increase strict no-take marine reserves with stronger ecological safeguards.

Strengthen BBNJ Agreement Implementation

Operationalise the Biodiversity Beyond National Jurisdiction Agreement for high seas governance.

Improve Scientiﬁc Monitoring

Use satellite tracking, AI, and marine biodiversity mapping for effective conservation.

Promote International Cooperation

Marine ecosystems are transboundary in nature and require collaborative governance frameworks.

Conclusion

The WDPCA ﬁndings reveal that global marine conservation is progressing but remains far below the scale required to protect ocean ecosystems effectively. While crossing the 10% threshold is an important milestone, achieving the 30×30 target will require rapid expansion of protected areas, stronger enforcement, and improved protection quality. Sustainable ocean governance is essential not only for biodiversity conservation but also for climate stability, food security, and the future of the blue economy.

Limnonectes motijheel: A New Amphibian Discovery from Arunachal Pradesh

Introduction

In a signiﬁcant boost to India’s biodiversity records, Indian scientists have discovered a new species of frog, Limnonectes motijheel, in the Namdapha Tiger Reserve. This rare amphibian belongs to the group commonly known as “fanged frogs” and exhibits unique behavioural and morphological traits. The discovery highlights the ecological richness of Northeast India and reinforces the importance of conserving fragile forest ecosystems.

About Limnonectes motijheel

Limnonectes motijheel is a newly identiﬁed species within the genus Limnonectes, which now includes six known species in India. The species is named after Motijheel Lake, known for its rich amphibian diversity.

One of its deﬁning features is the presence of small, fang-like projections in the lower jaw of males, giving rise to the name “fanged frogs.” These structures are believed to assist in feeding or territorial combat. Unlike most frogs that depend on water bodies for reproduction, this species exhibits a rare behaviour—it constructs mud nests beneath leaf litter on the forest ﬂoor. This nesting strategy has not been previously recorded among Indian members of this group.

The frog has a distinctive physical appearance, including a dark-brown line between the eyes, an inverted “V”-shaped ridge along its back, and broken lateral folds. Adults are medium-sized, typically measuring between 2.3 to 3.5 cm.

Key Features at a Glance (Infographic)

Species: Limnonectes motijheel

Location: Namdapha Tiger Reserve, Arunachal Pradesh

Group: Fanged frogs (Limnonectes genus) Unique Trait: Mud-nesting under leaf litter Size: 2.3–3.5 cm

Distinct Traits: Fang-like jaw projections, dorsal ridge, lateral folds

Namdapha Tiger Reserve: A Biodiversity Hotspot

The Namdapha Tiger Reserve, located in Changlang district, lies along the India–Myanmar border. It is uniquely positioned at the conﬂuence of the Indo-Malayan and Palearctic biogeographic realms, making it one of the most biologically diverse regions in the world.

The reserve is bounded by the Mishmi Hills and Patkai ranges and is traversed by the Namdapha River, a tributary of the Noa-Dihing River. It encompasses a wide range of forest types—from tropical evergreen and moist deciduous forests to temperate forests and alpine scrub.

Floral diversity includes rare species such as Blue Vanda orchids and endemic conifers like

Pinus merkusii and Abies delavayi. Medicinal plants like Mishmi Teeta are also found here.

Faunal diversity is equally remarkable. The reserve is the only protected area globally that hosts all four big cat species: Tiger (Panthera tigris), Leopard (Panthera pardus), Snow Leopard (Panthera uncia), and Clouded Leopard (Neofelis nebulosa). Other species include the Hoolock Gibbon (India’s only ape), Slow Loris, and Himalayan bears.

Signiﬁcance of the Discovery

The identiﬁcation of Limnonectes motijheel is signiﬁcant for several reasons. Firstly, it adds to India’s known amphibian diversity, a group often considered bioindicators of environmental health. Secondly, the unique nesting behaviour suggests evolutionary adaptation to forest ﬂoor ecosystems, opening new avenues for ecological and behavioural studies.

Moreover, the discovery underscores the importance of unexplored and under-documented habitats like Namdapha. It highlights the urgent need for conservation efforts in biodiversity-rich regions, which are increasingly threatened by habitat loss, climate change, and human activities.

Conclusion

The discovery of Limnonectes motijheel is not merely an addition to taxonomy but a reminder of the hidden ecological wealth of India’s forests. Protecting such habitats is crucial for sustaining biodiversity and maintaining ecological balance. Continued scientiﬁc exploration, coupled with strong conservation policies, will be essential to preserve these natural treasures for future generations.

Kulsi River Hydropower Project Controversy

A proposed hydropower project on the Kulsi River, a south-bank tributary of the Brahmaputra River, has recently triggered widespread protests from local residents, environmental groups, and conservationists. The issue has gained prominence in current affairs as it highlights the ongoing conﬂict between development objectives and environmental sustainability in India, particularly in ecologically fragile regions such as the Northeast.

About Kulsi River

The Kulsi River originates in the West Khasi Hills of Meghalaya at elevations exceeding 1800 metres. It is formed by the conﬂuence of three rivers—Khri, Krishniya, and Umsiri—which ﬂow

through the Khasi hill ranges. In its upper reaches, the river is locally known as Khri, and after merging with its tributaries, it ﬂows northwest and takes the name Kulsi.

The river enters Assam near Ukium and continues through the fertile plains of Kamrup district, where it supports agriculture, ﬁsheries, and local livelihoods. It eventually merges with the Brahmaputra near Nagarbera. The total length of the river is approximately 220 km, with about 100 km in Meghalaya and 120 km in Assam. The river basin forms an important part of the Brahmaputra drainage system and plays a key role in sustaining both ecological

and economic systems in the region.

Ecological Signiﬁcance

The Kulsi River is considered one of the most ecologically important rivers in Assam due to its relatively undisturbed ecosystem. It is one of the last remaining habitats of the endangered Gangetic Dolphin, which is also India’s National Aquatic Animal. These dolphins require clean, ﬂowing freshwater and are highly sensitive to disturbances such as pollution, noise, and changes in water levels.

In addition to dolphins, the river supports diverse aquatic ﬂora and fauna, including ﬁsh species that are vital for local ﬁsheries. The river also contributes to groundwater recharge, regulates local microclimates, and plays an important role in ﬂood moderation during the monsoon season. Its ecological richness makes it a critical natural asset that requires careful protection.

Issue: Proposed Hydropower Project

The proposed hydropower project aims to harness renewable energy from the river, aligning with India’s commitments towards clean energy and reduced carbon emissions. However, the project has raised several concerns:

Habitat disruption: Construction activities and altered water ﬂow may threaten dolphin populations and other aquatic species.
Changes in river dynamics: Dams can affect sediment transport, water temperature, and ecological balance.
Livelihood impacts: Local communities dependent on ﬁshing and agriculture may face economic losses.
Risk of long-term damage: Ecological degradation in such fragile ecosystems may be irreversible.

Arguments in Favour

Supporters of the project argue that it will contribute signiﬁcantly to renewable energy generation, reduce dependence on fossil fuels, and help India meet its climate targets. It can also promote regional development, improve infrastructure, and generate employment

opportunities for local populations. Additionally, hydropower projects are often seen as a reliable and sustainable source of energy in the long term.

Arguments Against

Opponents highlight that the project threatens biodiversity conservation, particularly the survival of the Gangetic dolphin. It may lead to ecological imbalance by altering natural river systems and disrupting aquatic ecosystems. Furthermore, it can adversely affect traditional livelihoods and cultural practices of local communities. Critics also argue that the environmental costs may outweigh the economic beneﬁts in such sensitive regions.

Way Forward

To address the issue effectively, a balanced and sustainable approach is required. This includes conducting comprehensive and transparent Environmental Impact Assessments (EIA), ensuring active participation of local communities, and exploring alternative or low-impact energy solutions. Strengthening conservation measures for endangered species and implementing strict regulatory oversight are also essential. Continuous monitoring and

adaptive management strategies can help minimise environmental damage.

Conclusion

The Kulsi River controversy underscores the broader challenge of achieving sustainable development in India. While hydropower is crucial for meeting energy demands and climate goals, projects in ecologically sensitive areas must be approached with caution. Protecting rivers like the Kulsi is vital for preserving biodiversity, ensuring sustainable livelihoods, and maintaining ecological balance. A science-based, inclusive, and precautionary approach is essential for reconciling development with environmental conservation.

Kuala Lumpur Declaration on Climate Justice

The Kuala Lumpur Declaration on Climate Justice was issued ahead of COP31 and the Santa Marta Conference, highlighting the urgent need for climate justice and accelerated climate action in the Global South. The declaration was adopted by civil society organisations, environmental activists, and climate experts from South and Southeast Asia.

The declaration emerged against the backdrop of rising geopolitical conﬂicts, energy insecurity, and continued dependence on fossil fuels. It argues that developing countries are disproportionately affected by climate change despite contributing minimally to global emissions.

Key Demands of the Declaration

Fossil Fuel Phase-Out

The declaration calls for a clear and time-bound global roadmap to phase out coal, oil, and gas in an equitable manner.

It stresses that developed nations, being historically responsible for higher emissions, should take the lead in reducing fossil fuel dependence while supporting developing economies in transition.

Climate Finance

A major demand is enhanced climate ﬁnancing for developing countries.

Estimated requirement: $5.1–6.8 trillion by 2030
Long-term demand: $5 trillion annually

The declaration argues that climate ﬁnance should be:

Adequate,
Predictable,
Grant-based rather than debt-driven.

Fossil Fuel Treaty

The declaration advocates a legally binding global Fossil Fuel Non-Proliferation Treaty to complement the Paris Agreement.

The proposed treaty seeks to:

Halt new fossil fuel expansion,
Gradually phase out existing production,
Ensure a fair transition toward renewable energy.

Just Transition

The declaration promotes a people-centric “just transition” framework. It emphasises protecting:

Workers dependent on fossil fuel industries,
Indigenous communities,
Women and youth,
Climate-vulnerable populations.

The focus is on balancing environmental sustainability with social justice and livelihood security.

Adaptation and Loss & Damage

The declaration calls for:

Tripling adaptation ﬁnance,
Strengthening the Loss and Damage Fund for climate-hit nations.

Developing countries argue that they require greater support to tackle extreme weather events, sea-level rise, droughts, and displacement.

Conference of the Parties (COP)

United Nations Framework Convention on Climate Change COP meetings are annual global climate summits where countries negotiate measures related to emissions reduction, adaptation, and climate ﬁnance.

COP31 is scheduled to be held in Antalya in November 2026.

Signiﬁcance

The Kuala Lumpur Declaration reﬂects the growing assertion of the Global South in climate negotiations. It highlights the need for climate equity, ﬁnancial responsibility of developed countries, and a faster transition away from fossil fuels while safeguarding developmental priorities.

Kali Tiger Reserve

Latest News

The Union Ministry of Environment, Forest and Climate Change has proposed an Eco-Sensitive Zone (ESZ) of around 663.32 sq km surrounding Karnataka’s Kali Tiger Reserve. The move aims to regulate developmental activities near the reserve and strengthen conservation efforts in the ecologically fragile Western Ghats region.

About Kali Tiger Reserve

Kali Tiger Reserve is situated in the Uttara Kannada (North Canara) district of Karnataka within the biodiversity-rich Western Ghats.

The reserve was formed by combining two major protected areas:

Dandeli Wildlife Sanctuary
Anshi National Park

These contiguous protected regions together form one of the most ecologically signiﬁcant forest landscapes in southern India.

The reserve shares ecological connectivity with several protected areas:

Bhimgad Wildlife Sanctuary in Karnataka to the north
Radhanagari and Koyna Wildlife Sanctuaries in Maharashtra
Five protected areas in Goa to the west

This connectivity supports wildlife movement and strengthens the conservation of large mammals.

Geography and Terrain

The terrain of Kali Tiger Reserve is highly diverse and includes:

Rolling hills
Steep escarpments
Deep river valleys
Forested plateaus

The Kali River ﬂows through the reserve and serves as a major source of water for Uttara Kannada district. The reserve derives its name from this river.

The region receives heavy monsoon rainfall, supporting dense forests and rich biodiversity.

Vegetation and Flora

The reserve mainly consists of:

Semi-evergreen forests
Moist deciduous forests
Bamboo patches
Grasslands

Kali Tiger Reserve has rich ﬂoral diversity with economically and medicinally important plant species.

Major tree species include:

Teak
Silver Oak
Eucalyptus
Various medicinal plants

The dense vegetation of the reserve provides ideal habitat conditions for numerous wildlife species.

Fauna

Kali Tiger Reserve is known for its remarkable faunal diversity.

Major Mammals

The reserve supports important populations of:

Tiger
Leopard
Elephant
Indian Bison (Gaur)
Wild Dog (Dhole)
Sloth Bear
Wild Boar
Sambar
Spotted Deer
Hanuman Langur
Bonnet Macaque

The reserve is also famous for sightings of the rare Black Panther.

Bird Diversity

Kali Tiger Reserve holds one of the highest populations of the Great Indian Hornbill in the Western Ghats.

The forests also support several endemic and migratory bird species, making the region important for bird conservation.

Ecological Importance

Western Ghats Biodiversity Hotspot

The reserve lies within the Western Ghats, one of the world’s eight “hottest hotspots” of biodiversity.

Wildlife Corridor

The reserve forms an important wildlife corridor connecting Karnataka, Goa, and Maharashtra protected areas.

Water Security

The Kali River originating and ﬂowing through the reserve supports agriculture, drinking water supply, and local livelihoods.

Tiger Conservation

The reserve plays a vital role in Project Tiger and conservation of apex predators in southern India.

Eco-Sensitive Zone (ESZ)

An Eco-Sensitive Zone is a buffer area surrounding protected areas where certain human activities are regulated to minimize ecological damage.

The proposed ESZ around Kali Tiger Reserve aims to:

Reduce environmental degradation
Control unregulated construction and mining
Protect wildlife habitats and corridors
Promote sustainable development

Conclusion

Kali Tiger Reserve is among the most signiﬁcant tiger habitats in the Western Ghats due to its rich biodiversity, ecological connectivity, and riverine ecosystem. The proposed Eco-Sensitive Zone is an important step toward balancing conservation with sustainable development.

For UPSC preparation, the reserve is important from the perspectives of environment, biodiversity conservation, Western Ghats ecology, and protected area management.

India’s Renewable Energy Achievements and Policy Reforms in FY 2025–26

India has emerged as one of the world’s fastest-growing renewable energy economies, driven by ambitious climate goals, policy reforms, and rapid expansion of clean energy infrastructure. Recently, the Ministry of New and Renewable Energy (MNRE) highlighted India’s major renewable energy achievements and policy initiatives during FY 2025–26.

The progress reﬂects India’s commitment toward energy transition, climate action, and sustainable economic growth while reducing dependence on fossil fuels.

Major Renewable Energy Achievements

Global Renewable Energy Ranking

India became the world’s third-largest country in renewable energy installed capacity after China and the United States.

Record Capacity Addition

India added a record 55.29 GW of non-fossil fuel capacity during FY 2025–26, nearly double the additions made in FY 2024–25.

Total Installed Capacity

The country’s total non-fossil fuel installed capacity reached 283.46 GW, of which 274.68 GW came from renewable energy sources.

Renewable Energy Composition

The renewable energy mix included:

Solar Energy – 54.7%
Wind Energy – 20.4%
Large Hydro – 18.7%
Bioenergy – 4.3%

Solar energy continues to dominate India’s clean energy transition due to declining costs and rapid rooftop and utility-scale expansion.

Paris Agreement Milestone

India achieved its Nationally Determined Contribution (NDC) target of obtaining 50% installed electricity capacity from non-fossil fuel sources ﬁve years ahead of the 2030 deadline under the Paris Agreement.

Decline in Fossil Fuel Dependence

Coal-based electricity generation witnessed a decline of 3.69%, leading to negative growth in fossil fuel generation. This indicates gradual decarbonisation of the power sector.

Reduced Import Dependence

Solar module imports reduced sharply from USD 2.15 billion to USD 758 million, reﬂecting growth in domestic manufacturing and self-reliance.

Major Policy and Regulatory Reforms

Fiscal Incentives

The government reduced GST on renewable energy devices from 12% to 5%, lowering project costs and encouraging wider adoption.

Further, the Basic Customs Duty (BCD) exemption on capital goods for Battery Energy Storage System (BESS) lithium-ion cell manufacturing was extended to strengthen domestic energy storage capacity.

Renewable Energy Equipment Import Monitoring System (REEIMS)

Launched in 2025, REEIMS enables real-time tracking of critical renewable energy equipment imports, improving transparency and supply chain monitoring.

Renewable Consumption Obligation (RCO)

The revised Renewable Consumption Obligation subsumed state-level Renewable Purchase Obligations (RPOs) into a uniﬁed national framework, ensuring greater policy coherence and compliance.

Market-Based Instruments

The Central Electricity Regulatory Commission (CERC) issued guidelines for Virtual Power Purchase Agreements (VPPAs), enabling companies to purchase renewable energy virtually without direct physical delivery.

Additionally, the MNRE launched a 500 MW Contract for Difference (CfD) pilot to stabilise renewable energy pricing and encourage investment.

National Policy on Geothermal Energy

India introduced the 2025 National Policy on Geothermal Energy to promote research, international partnerships, and technological development for harnessing geothermal resources.

Waste-to-Energy Reforms

Revised Waste-to-Energy (WtE) guidelines introduced a 50%-50% Central Financial Assistance release structure to improve project liquidity and implementation efficiency.

Expansion of PM Surya Ghar

The PM Surya Ghar: Muft Bijli Yojana was expanded into a demand-driven programme targeting installation of one crore rooftop solar systems by FY 2026–27.

Signiﬁcance of India’s Renewable Energy Push

Climate Change Mitigation

Renewable energy expansion supports India’s climate commitments and helps reduce greenhouse gas emissions.

Energy Security

Reducing dependence on imported fossil fuels enhances long-term energy security and economic resilience.

Economic Growth and Employment

The renewable energy sector generates green jobs, supports domestic manufacturing, and attracts investment.

Sustainable Development

Clean energy contributes to improved air quality, reduced pollution, and sustainable industrial growth.

Challenges Ahead

Despite strong progress, India still faces several challenges:

Grid integration and storage constraints
Land acquisition issues
Financial stress in DISCOMs
Dependence on critical mineral imports
Need for stronger transmission infrastructure

Addressing these challenges will be crucial for sustaining rapid renewable energy growth.

Conclusion

India’s renewable energy achievements in FY 2025–26 demonstrate its emergence as a global leader in clean energy transition. Through strong policy reforms, market innovation, and infrastructure expansion, India is steadily moving toward a low-carbon and energy-secure future. Sustained investment, technological innovation, and institutional coordination will remain essential for achieving long-term climate and energy goals.