Environment

As winter sets in, the issue of air pollution once again takes centre stage, especially in cities like Delhi, where air quality worsens, affecting residents' health. Though attention has traditionally focused on northern cities, recent studies have raised growing concerns about the air quality in southern cities like Chennai. A recent study by the Lancet Planetary Health reveals troubling findings, showing that Chennai, despite having lower levels of air pollution compared to the cities in northern India, faces a significantly high mortality risk. The city, with an annual PM-2.5 (fine particulate matter) level of 33.7 micrograms per cubic meter, is…

India’s urban areas are running out of water in more ways than one. According to India’s first National Water Bodies Census 2023, only 3% of the country’s 2.4 million water bodies lie in urban areas. As urbanisation accelerates — with urban population projected to double from 410 million in 2014 to 814 million by 2050 — infrastructure increasingly threatens to consume the country’s blue spaces, including lakes, ponds, marshlands, and swamps. A 10-city study conducted by World Resources Institute (WRI) India found that between 2000 and 2015, while the built-up area in the surveyed cities increased, their blue cover decreased by an average of 15%. The loss…

The extreme levels of air pollution reported in Delhi over the last week are shocking, but have not really taken anyone by surprise. It has become a yearly ritual in India’s capital. November has seen the average air quality index (AQI) hovering around 500 in the recent weeks, at ‘severe plus’ category, prompting the government to invoke several emergency measures.  While most people consider stubble burning a major cause of air pollution, a CSE analysis has revealed that vehicular pollution is the top contributor among combustion sources to Delhi's deteriorating air quality.  “Explosive motorization, choking congestion and inadequate public transport…

The ongoing COP29 conference in Baku, is a pivotal moment in climate action, focusing on global cooperation to limit warming to 1.5°C. Key priorities include mobilising financial resources for developing countries to submit ambitious climate plans (NDCs) by 2025 and continuing support through the Fund for Loss and Damage (FRLD) established at COP28. COP29 also aims to strengthen adaptation efforts by setting finance-backed targets for the Global Goal on Adaptation.  While COP29 primarily focuses on international climate initiatives, India must address pressing domestic issues. One key group often overlooked is informal workers in Indian cities. Over 80% of India’s urban…

17,422 metric tonnes per day — that's the staggering amount of trash the Greater Chennai Corporation (GCC) will generate in 30 years. Currently, Chennai produces 6,143 metric tonnes of waste daily, which adds to the growing piles in Kodungaiyur and Perungudi dump yards. Like many other major cities, GCC is struggling to find a sustainable solution for waste management and has proposed a Waste-To-Energy (WTE) plant. However, the experiences of cities like Delhi are testimony to the significant environmental and health impacts of WTE plants. A recent The New York Times investigative report on the Delhi WTE reveals: "The government…

Many of us who have lived in Chennai for years have probably crossed Pallikaranai Marshland at least once. Yet, we often overlook that we are passing through an area that was once ecologically rich and a haven for diverse species. But the marshland, one of the few coastal aquatic habitats in India to qualify as a wetland, is now just a shadow of its former self. Unchecked encroachments and rampant urbanisation have drastically reduced the catchment area of Pallikaranai Marsh. With the Northeast monsoon bringing rains to Chennai, residents are increasingly concerned about flooding. Experts point out that rejuvenating the…

Garudachar Palya is part of Mahadevapura constituency, with an area of 6.5 sq km, which includes four revenue villages — Garudachar Palya, Hoodi, Seegehalli, and Nallurahalli. These villages have stayed mostly the same, while the city has expanded around them with more organised development from the BDA. This mismatch has led to issues like narrow village lanes becoming crowded with traffic, as they’re now used as shortcuts to bypass main roads. Looking at population growth, between 2011 and 2024, the ward has seen an estimated increase of 62.24%. This rapid growth adds to the existing strain on infrastructure. Ward no…

According to a recent World Bank report, India presently accounts for a meagre 1.8% of the global forest cover. Even more concerning is the fact that an enormous ‘46,759 acres of forest-land have been sanctioned for mining’ across the country, over the course of the last five years, by the Ministry of Environment, Forest and Climate Change (MoEFCC) itself. According to many ace climate scientists and researchers, our planet has already hit “the tipping point”. In this backdrop, the people’s struggle to save Dwarka Forest, one of the last remaining natural forest lands in a choking capital city, is a…

As the Northeast monsoon intensifies in Tamil Nadu, the fishing community in Ennore has asked the State government to clear blockages and encroachments along the Kosasthalaiyar River and Ennore backwaters. In an open letter addressed to K.K.S.S.R. Ramachandran, Minister for Revenue, District Revenue Establishment, Deputy Collectors for Disaster Management and P Amudha, Principal Secretary, Revenue and Disaster Management Department, the fishers point out that these blockages are affecting the health of the Ennore wetlands and could cause flooding in Chennai, if not cleared. While the services of the fishers and fishing boats are called upon every monsoon for flood rescue,…

We are standing ankle-deep in muck mixed with construction debris on the banks of the Ulhas River on a grey, cloudy day with rain lashing down. I am with Vicky Patil of the environmental NGO Vanashakti. Mounds of construction waste surround us. This is a Coastal Regulation I Zone (CRZ I). Vicky explains that Vanashakti filed a complaint with the Maharashtra Pollution Control Board (MPCB) about dumping debris in a CRZ I zone and even visited the site with them. During the visit, a local informed them that the waste was coming from the Thane Municipal Corporation (TMC), which was…