Environment

The Cooum River, once a sacred river that shaped the history of Madras, has now become a sad sign of urban degradation. For the millions of residents in Chennai, it has transformed into a malodorous, polluted, and stagnant channel, burdened with solid waste accumulation and extensive encroachments along its banks. During a recent datajam organised by Oorvani Foundation and OpenCity, we used Geographical Information System (GIS) datasets and population analytics to investigate the underlying causes contributing to this crisis. The results show that rapid urbanisation, inadequate provision of essential civic infrastructure, and the absence of coherent policy frameworks, along with…

The Pallikaranai Marshland, one of Chennai’s last remaining natural wetlands, has long been a site of ecological tension. Its designation as a Ramsar site brought national and international recognition, along with renewed expectations for strong conservation measures. Yet the marshland continues to face intense pressure from urban development, infrastructure projects and real estate expansion.  Recently, Arappor Iyakkam, an anti-corruption organisation, alleged that state agencies illegally cleared environmental and construction approvals for a large high-value housing project within the Ramsar boundary. As the matter unfolds, it reveals how regulatory gaps and political inaction make the marsh vulnerable. Meanwhile, residents of Tansi…

The Brihanmumbai Municipal Corporation has released the draft Zonal Master Plan for the eco-sensitive zone of Sanjay Gandhi National Park (SGNP). The civic body is inviting suggestions and objections till October 17. However, environmentalists have raised concerns about potential ecological damage in the name of development, through the master plan. They allege that commercial activities are planned very close to sensitive ecosystems. Meanwhile, communities living in and around the park fear displacement, loss of livelihood and erosion of their cultural identity. They are also finding it difficult to submit their feedback, as the draft plan is in English. Background SGNP…

The Pune Riverfront Development Project, which aims to beautify the banks of the Mula-Mutha River through concretisation, has been one of the most debated topics in the city. Many citizens have raised concerns about its environmental impact. While the project promises promenades, gardens, and flood control measures, several people believe it comes at the cost of destroying the natural ecosystem that has existed for centuries. Among them is Swapnil Thakur, a Pune-based musician popularly known as the 'One-Man Symphony,' who is using his music to protest against the project. Once a corporate employee, Swapnil’s life took a drastic turn after…

The Karnataka government has introduced fresh amendments to the Karnataka Tank Conservation and Development Authority (KTCDA) Act, which could reduce buffer zones around lakes and drains to as little as 0–30 metres. On paper, this may appear to be an administrative change. In reality, it risks accelerating floods, pollution, and water insecurity across Bengaluru. Here’s what citizens need to know. How we got here Bengaluru’s lakes have long been central to the city’s ecology and culture. Recognising their importance, courts and planners have repeatedly mandated protective buffer zones: 2012: Karnataka High Court directed a 30-metre buffer around lakes and a…

On September 1st, the Urban Development Department of the Karnataka government issued draft regulations reducing court-mandated drain buffers for Bengaluru, inviting public comments. We responded with an open letter placing on record our analytical review and evidence-based objections.  Reducing buffers around drains (and lakes) will intensify floods, accelerate water loss, and foster encroachments already flagged by the Comptroller and Auditor General of India's (CAG) audits. It also violates the Karnataka High Court and National Green Tribunal orders, undermines Bengaluru’s Climate Action Plan, and breaches public trust. We urge the government to halt these reductions and act on the CAG's recommendations.…

A walk around Madipakkam Lake today offers a lush, green escape: a scenic pathway encircling brimming waters, shaded by native trees and plants that purify the air. Small islands in the lake attract a variety of birds, making it a haven for urban biodiversity. Along the paved paths, vendors selling healthy snacks and fresh vegetables have set up shop, a reflection of how environmental restoration can also support local livelihoods, particularly for low-income groups. From as early as 4 am until late in the evening, hundreds of people, both young and old, visit the lake daily. Whether it is for…

In September 2025, the Karnataka government issued a notification modifying the buffer zones around Bengaluru’s stormwater drains and lakes. The new guidelines prescribe just 15 metres for primary drains, 10 metres for secondary, and only 5 metres for tertiary drains—much lower than the earlier mandates of 30/15/10 metres. The notification follows the proposal to amend the Karnataka Tank Conservation and Development Authority (KTCDA) Act, reducing buffer zones around lakes. Lake buffers, which were at 30 metres, have been proposed to be reduced to a range between 0 and 30 metres, based on the lake's size. This move has been criticised…

For nearly three decades, the world has gathered to talk about climate change at the annual Conference of the Parties (CoP). These efforts are well-meaning — they set shared goals, put climate on the world’s agenda, and create space for countries to work together. But turning these good intentions into actual progress? That’s where things get tricky. Emissions keep rising, and the 1.5°C target is slipping further from reach. The challenge isn’t knowing what needs to be done — it’s understanding why it isn’t happening, how to make action easier, and how to hold leaders accountable for the commitments they’ve…

Mumbai's P/North Ward is a climate paradox. On a map, it looks green, boasting significant cover from the Sanjay Gandhi National Park to the east and vital mangroves to the west. Yet, the reality on the ground for its nearly one million residents is one of scorching heat. The surfaces people walk and live on have heated dramatically, with land surface temperatures soaring by over 5°C in much of this ward between 2015 and 2024. The reason is a familiar story of urban expansion: rapid, unplanned growth has replaced cooling ecosystems with a dense fabric of concrete, tin, and asphalt,…