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GeezerVison is showing www.cseindia.org — Centre for Science and Environment

CSE@COP 31: Antalya, Türkiye

The Latest in CSE

Clean Energy Manufacturing in India- The Way Ahead
Events

Clean Energy Manufacturing in India- The Way Ahead

November 12, 2026
CSE releases early-winter post-Diwali air pollution analysis for Delhi-NCR
Press Releases

CSE releases early-winter post-Diwali air pollution analysis for Delhi-NCR

Delhi's early-winter air worsened in 2026, with the PM2.5 average higher than in previous years.

Powering Clean Energy Future in Western Uttar Pradesh
Workshop

Powering Clean Energy Future in Western Uttar Pradesh

India has set ambitious clean energy and climate targets, including achieving 500 GW of non-fossil fuel-based electricity capacity by 2030 and attaining net-zero emissions

Sustainable Food Systems-An Agenda for Climate-Risked Times
Workshop

Sustainable Food Systems-An Agenda for Climate-Risked Times

Growing incidence and intensity of extreme weather events pose a big challenge for India's farming population, which is already vulnerable due to economic and ecological challenges.

Events

  • November 18-20, 2026

    Conflict & Commons: Community-Centred Land Governance for Renewable Energy

  • November 20, 2026  

    Prevent AMR for Sustainability and One Health

  • December 15, 2026

    Superfoods in My Kitchen

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Past Events
  • November 5, 2026

    Community Collectives for Inclusive DRE Development

  • November 4, 2026

    Climate India 2026

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The Sunita Narain Show → The Sunita Narain Show → THIS WEEK IN CSE → My Food Story: Tales of our biodiversity → Carbon Politics: A video podcast by CSE →

Trainings at AAETI

Anil Agarwal Environment Training Institute (AAETI).

AAETI is an education and training initiative and innovation centre of CSE, which aims to communicate the science, complexity and politics of environment across India, South Asia and the world. Designed to look for and find appropriate and affordable solutions to some of the most pressing environmental and developmental problems faced by the Global South, AAETI serves as a research, academic and capacity-building hub that conducts a number of short- and long-term courses and training programmes.

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Upcoming Trainings

November 25 - December 9, 2026

Global Online Certificate Course: AI, Data and Fact-Checking for Effective Research and Communication in Environment, Science and Development

December 8-11, 2026

Heat Shield: City Experiences and Strategies for Tackling Heat

December 9-11, 2026

Inida's Next Frontier in Clean Energy Technologies

January 18-29, 2027

Online Course: The RE (Renewable Energy) Playbook

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Publications

Climate India 2026: An Assessment of Extreme Weather Events report cover

Climate India 2026: An Assessment of Extreme Weather Events

A season-by-season, month-by-month and region-by-region analyses

Powering Progress, Protecting People report cover

Powering Progress, Protecting People

Conflict-Sensitive Pathways for Renewable Energy Development in India

Promises, Processes and Progress report cover

Promises, Processes and Progress

Lessons from rooftop solar deployment under PM Surya Ghar scheme in Odisha, Jharkhand and Chhattisgarh

Beyond Compliance: Strengthening Social Reporting Under BRSR report cover

Beyond Compliance: Strengthening Social Reporting Under BRSR

An assessment of reporting and disclosures under SEBI's Business Responsibility and Sustainability Reporting framework

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Down To Earth

Down To Earth magazine cover: The Original Forecaster
15 Nov 2026

ON THE RUN

As the planet warms, species are moving towards cooler waters, higher ground and new territories...

डाउन टू अर्थ हिंदी पत्रिका का कवर: दर्द की इंतहा
01 Nov 2026

हम दो, हमारे दो भी नहीं

भारत में प्रजनन दर का प्रतिस्थापन स्तर से नीचे पहुंचना भविष्य की आबादी में भारी गिरावट के साथ ही...

CSE Bulletins

Get the best of CSE's research, updates and reportage in your inbox.

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Videos

The Sunita Narain Show: Delhi's pollution crisis needs action, not shutdowns
COP31 timeline: How the world got here and what's at stake in Türkiye

COP31 timeline: How the world got here and what's at stake in Türkiye

Cyclone Arnab Hits Andhra Pradesh: Landfall, Heavy Rain & What’s Next

Cyclone Arnab Hits Andhra Pradesh: Landfall, Heavy Rain & What’s Next

Soil is the next Gold!

Soil is the next Gold!

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Driving Change

Anumita Roychowdhury wins the Devi Award for 2026 report cover

Anumita Roychowdhury wins the Devi Award for 2026

CSE executive director Anumita Roychowdhury has been selected by The New Indian Express Group as one of recipients of their prestigious Devi Awards for 2026.

CSE's Marine Marshals programme reaches Kochi report cover

CSE's Marine Marshals programme reaches Kochi

The Environment Education team's work on creating awareness among schools and schoolchildren in India's coastal states about the issue of marine litter went on the ground in Kochi

CSE Engages with Young Planners in Shaping India’s Urban Future report cover

CSE Engages with Young Planners in Shaping India’s Urban Future

The Centre for Science and Environment (CSE) was among the knowledge partners at a one-day seminar for young planners organised by the Institute of Town Planners, India, at the India Habitat Centre, New Delhi, on October 30.

Sunita Narain at the 6th Kisan Swaraj Sammelan report cover

Sunita Narain at the 6th Kisan Swaraj Sammelan

At the 6th Kisan Swaraj Sammelan for Eastern and North Eastern India, held in Kolkata from October 29-31, CSE Director General Sunita Narain spoke about the growing impacts of climate change on agriculture, including extreme rainfall, crop losses and rising input costs.

Sunita Narain at the Earth Again (Punascha Pruthibi) Conference in Bhubaneswar report cover

Sunita Narain at the Earth Again (Punascha Pruthibi) Conference in Bhubaneswar

Sunita Narain was invited by the Sambad media group of Odisha as the Chief Guest at its Earth Again (Punascha Pruthibi) Conference in Bhubaneswar; this is the group's flagship climate action initiative.

Down To Earth’s Puja Das selected for Global Energy Futures Media Fellowship report cover

Down To Earth’s Puja Das selected for Global Energy Futures Media Fellowship

Puja Das of Down To Earth has been selected as one of 15 journalists for the Global Energy Futures Media Fellowship, organised by the German Federal Foreign Office and the Deutsche Gesellschaft fur Internationale Zusammenarbeit (GIZ), The fellowship will take place in Berlin, Germany, from November 23 to 27, 2026.

CSE at UNEP India–RIS Dialogue on Climate and Biodiversity report cover

CSE at UNEP India–RIS Dialogue on Climate and Biodiversity

Sehr Raheja, Deputy Programme Manager, Climate Change and Green Economy spoke at the UNEP India-RIS Dialogue on Connecting Nature and Climate: Dialogue on CBD COP17 and UNFCCC COP31.

SKOCH Award for Sunita Narain report cover

SKOCH Award for Sunita Narain

CSE director general Sunita Narain has been selected to receive the 2026 SKOCH Challenger Award in recognition of her contribution to environment protection, public policy and sustainable development.

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CSE recognised among the world’s top 100 environmental think tanks report cover

CSE recognised among the world’s top 100 environmental think tanks

Centre for Science and Environment (CSE) has been recognised among the world's top 100 environmental think tanks in the Global Environmental Think Tank Development Report, released by the Institute for Green Innovation and Development in Hangzhou, China.

Carbon Politics enters the climate classroom report cover

Carbon Politics enters the climate classroom

The Carbon Politics podcast has been included as a compulsory reference in the syllabus, of the Climate Policy and Governance course at IIHS University, Bengaluru.

CSE helps Uganda's environment body by designing a waste management tool for the country report cover

CSE helps Uganda's environment body by designing a waste management tool for the country

On September 24, 2026, Atin Biswas, Shobhit Srivastava and Kaifee Jawed from CSE's Solid Waste Management and Circular Economy and Sustainable Industrialisation programmes met with Barirega Akankwasa

Significant strides in Africa report cover

Significant strides in Africa

CSE's Clean Air and Sustainable Mobility team has signed a Framework of Cooperation with Kenya's National Environment Management Authority (NEMA). The aim is to provide technical assistance to strengthen monitoring and controlling real-world on-road emissions; designvehicle scrappage frameworks and end-of-life management policies; and prepare an EV battery recycling framework for circular transition to zero-emission mobility.

Collaboration with the Uttar Pradesh New and Renewable Energy Development Agency (UPNEDA) report cover

Collaboration with the Uttar Pradesh New and Renewable Energy Development Agency (UPNEDA)

A PMU has been established at UPNEDA with two CSE consultants. To support implementation of the Renewable Purchase Obligation (RPO) scheme in the state, CSE is engaging obligated entities, improving data quality, and assessing compliance challenges.

Upping the heat action in cities report cover

Upping the heat action in cities

CSE's Urban Cooling Framework has been adopted as the standard methodology for the Ministry of Housing and Urban Affairs' (MoHUA) Heat-Resilient Cities project. Cities under the project are now developing their cooling strategies using CSE's approach. CSE is also been assisting the local governments in Kolkata, Jaipur, Gwalior and Bhopal in this sphere.

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CSE in News

New Indian Express - Delhi

Toxic start to winter: Delhi-NCR's pre-Diwali PM2.5 touches three-year high, says CSE

Delhi-NCR's early-winter air pollution has worsened this year, with the average PM2.5 concentration in the week preceding Diwali touching a three-year high, while vehicular emissions and regional pollution inflow continued to drive the toxic air, according to a new analysis by the Centre for Science and Environment (CSE). - Advertisement - The analysis released on Wednesday said the average PM2.5 concentration during the week before Diwali stood at 236 micrograms per cubic metre, marking a 97 per cent increase from 120 micrograms per cubic metre in 2025 and a 32 per cent rise from 179 micrograms per cubic metre in 2024. It said pollution levels were generally higher in the pre-winter period this year than in 2025, except for a brief decline in late September due to rainfall. CSE said the findings highlighted the failure of year-round pollution control measures, with Diwali firecrackers aggravating an already deteriorating situation rather than being the sole cause of the pollution crisis. "Baseline pollution is higher than in previous years," said Anumita Roychowdhury, executive director of research and advocacy at CSE, adding that inadequate emission control across major pollution sources had contributed to the worsening air quality. The analysis, based on air quality data from the Central Pollution Control Board (CPCB), pollution-source contribution estimates from the Indian Institute of Tropical Meteorology (IITM), crop fire data and traffic analytics from Tom Tom (the geological and mapping technology company that aggregates GPS data), said vehicular transport remained the largest contributor among Delhi's local pollution sources.

Pioneer - New Delhi

City’s pre-Diwali PM2.5 at 3-year high: CSE

Delhi’s average PM2.5 concentration in the week preceding Diwali touched a three-year high of 236 micrograms per cubic metre, nearly double the level recorded last year. Vehicular emissions, pollution drifting from neighbouring NCR districts and persistent traffic congestion are emerging as major drivers of the capital’s worsening air quality, according to a new analysis by the Centre for Science and Environment (CSE) released on Wednesday. The findings point to a deterioration in Delhi-NCR’s baseline air quality even before Diwali firecrackers and seasonal stubble burning added to the pollution burden. The analysis found that average PM2.5 levels during the pre-Diwali week were 97 per cent higher than the 120 micrograms per cubic metre recorded in 2025 and 32 per cent above the 179 micrograms per cubic metre registered in 2024. The report also questioned the effectiveness of emergency traffic restrictions imposed under the Graded Response Action Plan (GRAP), stating that the curbs failed to improve weekday congestion significantly. It found that evening traffic continued to expose residents to elevated levels of nitrogen dioxide (NO2), a pollutant largely associated with vehicular emissions, with concentrations remaining high until midnight. Drawing on air quality data from the Central Pollution Control Board (CPCB), pollution-source estimates from the Indian Institute of Tropical Meteorology (IITM), crop-fire data from the Indian Agricultural Research Institute and traffic analytics from TomTom, the analysis attributed the deterioration to inadequate year-round emission control. “Baseline pollution is higher than in previous years,” said Anumita Roychowdhury, executive director of research and advocacy at CSE, arguing that firecrackers and farm fires had aggravated an already polluted atmosphere rather than being the sole cause of the crisis. An analysis of IITM’s Decision Support System data for November 1-8 found that pollution transported from neighbouring NCR districts accounted for 54.43 per cent of Delhi’s PM2.5 burden, while local sources contributed 33.06 per cent and stubble burning accounted for 14.29 per cent. Among Delhi’s local emission sources, vehicular transport was the largest contributor at 52 per cent, followed by residential activities at 13 per cent and peripheral industries at 11 per cent. Construction contributed seven per cent, while energy use and waste burning accounted for five per cent each. Road dust and other sources contributed four per cent each. The analysis also found that severe pollution episodes continued even as farm fires’ contribution declined. Stubble burning’s share of Delhi’s PM2.5 pollution stood at 3.9 per cent during the initial GRAP Stage I restrictions, rose to 11.5 per cent on November 1, and subsequently declined to 8.6 per cent on November 2. It peaked at 16.2 per cent on November 4 before falling to around eight per cent on November 6, when Delhi’s AQI reached 382, and GRAP Stage III restrictions were invoked. The study also flagged a shift in Delhi’s pollution hotspots. While 11 of the city’s 13 officially designated hotspots recorded lower PM2.5 concentrations between October 1 and November 8 than in the same period last year, several other locations emerged as areas of concern. Anand Vihar recorded a 49 per cent decline, followed by Wazirpur at 41 per cent, Ashok Vihar at 40 per cent and Bawana at 22 per cent. However, Jahangirpuri remained the most polluted designated hotspot, with an average PM2.5 concentration of 163 micrograms per cubic metre. Among emerging hotspots, Vivek Vihar recorded 144 micrograms per cubic metre, followed by Sonia Vihar at 139, ITO at 137 and Delhi Technological University at 135. On the effectiveness of traffic restrictions, CSE’s analysis found that Delhi recorded an average daily Travel Time Index (TTI) of 2.40 during November 2-6, against 2.38 on October 30, immediately before the restrictions. The evening peak index also remained virtually unchanged at 3.49 against 3.48. Between January and April, commuters took 13 per cent longer to complete journeys than under normal weekday conditions. Evening journeys took 13 to 31 per cent longer. Nitrogen dioxide concentrations also rose by nearly one-third from November 2, even as congestion levels remained largely unchanged.

Urban Acres

Delhi Air Pollution Worsens as 22 New Hotspots Emerge

Delhi air pollution worsened on Wednesday as the city’s average Air Quality Index rose to 313, placing it in the very poor category, while 22 new pollution hotspots were identified in a report issued by the Centre for Science and Environment. The deterioration came even as temperatures fell below 15 degrees Celsius for the first time this season. The Central Pollution Control Board recorded Delhi’s average AQI at 313, 14 points higher than Tuesday’s reading of 299, which was in the poor category. The air quality in the Delhi Technological University area was the worst among the city’s monitored locations, crossing 400 on Wednesday evening and entering the severe category. The rise followed a brief period of improvement in Delhi’s air quality. According to the report issued by the Centre for Science and Environment, older pollution hotspots appeared to be showing some improvement, but new hotspots were developing at a faster pace. The report identified 22 locations where pollution hotspots were emerging.

Urban Acres

Delhi Air Pollution Reveals Why Local Emissions Still Defeat GRAP-3

Delhi air pollution has intensified at the beginning of the winter season even as the contribution from stubble burning has declined, according to an analysis by the Centre for Science and Environment (CSE) reported by Navbharat Times. The finding shifts attention from a familiar seasonal explanation towards the wider urban system: emissions generated within Delhi, pollution transported from other National Capital Region cities, and weather conditions that allow pollutants to accumulate over the capital. The CSE analysis found that the average PM2.5 concentration in Delhi during the week before Diwali was 236 micrograms per cubic metre. The report described this as the highest average for the corresponding period in the past three years. The level was 97% higher than in 2025 and 32% higher than in 2024, according to the figures cited in the report. The numbers matter because they show that a reduction in one highly visible source has not translated into cleaner air overall. Stubble burning has long occupied a central place in public discussions about Delhi’s winter pollution. However, the CSE assessment cited by the report indicates that the seasonal pollution episode cannot be understood through farm fires alone. The contribution of local emissions and pollution arriving from other parts of the NCR remains substantial. The distinction is important for governance. A source that is geographically outside Delhi may still affect the city’s air, while sources within the capital’s boundaries may be harder to control because they are dispersed across transport, households, construction and commercial activity. This makes the problem less amenable to a single emergency measure and more dependent on coordination across jurisdictions.

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In 2025-26...

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