Environment

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,…

Waking up to the sound of waves crashing against the shore and enjoying a panoramic view of the sea from your high-rise balcony. It's the kind of lifestyle promoted by real estate brochures, luring home buyers with properties steps away from the beach. But what about the impact of indiscriminate development along the coastline? Coastal areas are delicate ecosystems that bear the brunt of unchecked urban expansion. This development often comes at the cost of mangroves, sand dunes and delicate marine habitats. Recognising this looming threat, the Government of India introduced the Coastal Regulation Zone (CRZ) guidelines. These are specifically…

Mumbai's M/East Ward, a sprawling peripheral area including Mankhurd, Govandi, Deonar, Trombay and Chembur, embodies a tale of two cities. It is a vital economic engine, home to major industrial facilities such as the Bhabha Atomic Research Centre (BARC), Tata Power, RCF and HPCL. At the same time, it lies on the city's fringe where its unseen have been pushed over decades, from the mountains of waste at the Deonar landfill to the marginalised communities resettled in its cramped colonies. Our study on the impact of rising urban temperatures reveals just how this deep-seated inequality is baked into the very…

They form the backbone of the country's seafood export industry, worth over ₹60,000 crore. However, Chennai’s coastal communities, especially fisherwomen, remain mostly invisible in policy and pay. Enduring punishing 15-hour days under sweltering heat, they clean, dry, and sell fish for just ₹200 to ₹300 a day. They work on blistering concrete without shade, toilets, or access to safe drinking water. Prolonged exposure to these conditions puts them at risk of sunburn, dehydration, dizziness, eye damage, and kidney issues. These health problems remain largely unaddressed. At sea, rising water temperatures and pollution continue to push fish further offshore. This forces…

Just a few metres away from the congested traffic bottleneck on Mount Poonamallee Road, near Sri Ramachandra University in Porur, lies Chennai’s first wetland sponge park, named Dr MS Swaminathan Wetland Eco Park. Unlike most parks in Chennai, this one stands out for striking a balance between ecological restoration and community use. Dr MS Swaminathan Wetland Eco Park, Chennai's first sponge park. Pic: Shobana Radhakrishnan What was once a marshy plot of land became a dumping ground and parking lot over the years. The Chennai Metropolitan Development Authority (CMDA), along with the Sponge Collaborative, has converted this 16.63-acre site, part…

As Indian cities expand at an unprecedented pace, the consequences of rapid urbanisation are becoming increasingly visible: frequent flooding, water scarcity, heat stress, and the loss of natural ecosystems. Once-porous landscapes are now sealed with concrete, leaving rainwater with nowhere to go but into overburdened drainage systems. Even moderate rainfall events can now bring cities to a standstill. In this context, nature-based solutions, such as sponge parks, offer a timely and practical response to India’s urban challenges.  What is a sponge park? Sponge parks are engineered wetlands designed to absorb, store, filter and slowly release rainwater, mimicking the functions of…

The recent warnings from BBMP to citizen-led lake groups against raising public funds for lake maintenance have raised several important questions. The Palike has also sent a notice to one of the groups, the Puttenahalli Neighbourhood Lake Improvement Trust (PNLIT), to stop maintenance works around the lake. In response, PNLIT, incidentally the first citizen group in Bengaluru to formally maintain a lake, announced their withdrawal from all maintenance activities at Puttenahalli lake in JP Nagar.  In the absence of BBMP support, lake groups had anyway been struggling to continue their work over the past five years. Now, as these groups…

Bengaluru’s first-ever Climate Action and Resilience Plan (BCAP) was launched on November 27th, 2023. The main objectives of BCAP are to mitigate greenhouse gas emissions from the city and to build adaptation and resilience against climate change hazards collaboratively, leading to inclusive outcomes for Bengaluru’s citizens. To achieve these objectives, BCAP has formulated short-, medium- and long-term strategies and actions in seven key sectors in consultation with all relevant stakeholder agencies.  Here is a critical look at the progress of BCAP since its inception.   Undoubtedly, BCAP is a very well-conceived, comprehensive and ambitious initiative. It sets clear goals, targets, and…