Environment

Every afternoon around 2 pm when school ends, nine-year-old Rian looks forward to playing basketball. The neighbourhood park near his home does not have a basketball hoop, so he often uses a tree as an imaginary net. A few months ago, his doctor advised his mother, Geeta Kohli, to ensure he plays daily to help manage his childhood obesity. However, during Delhi’s unforgiving summers, the heat often disrupts this routine.  Rian's tuition classes start at 5.30 pm and in the afternoon, the outdoor temperature hovers around 45 degrees Celsius, making it difficult to go out and play. By the time…

Citizen lake groups have historically played an important role in protecting the city’s lakes. The erstwhile Bruhat Bengaluru Mahanagara Palike (BBMP) has a long history of engaging with citizen groups. Citizen-led lake groups have long played a crucial role in acting as “watchdogs” of Bangalore’s lakes. They are often the “first responders” to problems that emerge in water bodies. They have raised alarm bells around illegal encroachments and often help coordinate between agencies to monitor rejuvenation efforts. They foster community awareness on lakes and are often able to innovate new solutions. The most recent version is the Kere Mitra (Lake‑Friend)…

Lying at an altitude of 920 metres in the rain-shadow area of the Western Ghats, Bengaluru’s geography and climate do not support a perennial natural water source. Instead, a north-south ridge divides the city into three primary valleys: Hebbal, Koramangala-Challagatta, and Vrishabhavathi. Rainwater draining down these slopes feeds a network of small streams — forming a cascading lake system that the city historically relied on for its water supply. During the Open City biodiversity datajam held in December 2025, our group examined the ecological trends around Bengaluru's lakes. Data on insects, spiders and flora on platforms like iNaturalist were insufficient…

As Chennai’s sizzling summer days have ended, work has begun on the northeastern monsoon across the city’s 15 zones. This year, experts and weather bloggers are calling attention to the Super El Niño (a weather pattern brewing in the tropical Pacific Ocean). Anticipating heavy storms, the Tamil Nadu government constituted an expert advisory committee under the Tamil Nadu Disaster Risk Reduction Agency to strengthen disaster preparedness and climate resilience, at the end of July. “Tamil Nadu will face the El Niño effects till September 2027, and we could potentially face a super cyclone forming in the Bay of Bengal during…

Over 200 citizens, resident groups, environmental organisations and civil society groups have urged the Karnataka government to roll back its decision to amend the Karnataka Government Parks (Preservation) Act, 1975, which would allow portions of parks and gardens to be used for concrete-heavy infrastructure projects. Gathering at Lalbagh Botanical Garden in Bengaluru, the groups showcased a banner saying: NOT 5%. NOT 1 INCH. LEAVE OUR PARKS ALONE. "Bengaluru is becoming hotter and more climate vulnerable, yet the Karnataka government is making it easier to take away one of the city’s most important forms of natural infrastructure. Parks help cool neighbourhoods,…

On hot summer afternoons in the western part of Chennai, while many adults retreat indoors, a group of children are out on the streets with thermo-hygrometers, fluke instruments, notebooks and pens. They record heat and humidity at different times of the day, surveying residents about their experiences and identifying how heat is distributed across their locality. Trained through a joint initiative by the Chennai Climate Action Group (CCAG)'s Youth Climate Resilience Movement and the Pudiyador Learning Centre, children in Ramapuram are monitoring hyperlocal temperatures, mapping urban heat hotspots, and documenting how extreme weather impacts their community.  The exercise began after…

Imagine this: the electricity zaps off at noon during summer, and the air conditioning switches off. The sweat begins trickling down your back, and the hot air envelops your room. In these situations, Abirami DM and her family sit near the courtyard of their traditional home in Chintadripet, as the breeze filters in. This two-storey home, which has witnessed six generations of Abirami’s family, is built with materials like red oxide flooring and mud walls. “I grew up here, so I couldn’t find the difference in terms of heat until my maternal side of the family moved from a traditional…

For Dhanasekaran, a resident of Ezhilmuga Nagar, an area adjacent to the proposed Global Sports City project site, the vast stretch of land in Semmencheri is more than an empty plot waiting to be developed. Every monsoon, he watches it transform into a sheet of water, carrying runoff from surrounding neighbourhoods towards the Pallikaranai Marshland. "We are the poorvakudi (original inhabitants) of this place. Even though we were relocated here years ago, this has become our home," says Dhanasekaran, standing beside the 112-acre site where the project is set to come up. "Officials may not know how much water will…

As summer temperatures reach record highs across India, our homes are increasingly turning into heat traps. While air conditioning offers immediate relief, relying heavily on high energy-consuming cooling methods cannot be a long-term solution. These are not sustainable and contribute to carbon emissions. On the other hand, many quick DIY fixes may not work, and heavy architectural changes may not be an option for those living in rented homes or in budget-conscious households. So, how can we make our homes more liveable as cities heat up? What are some sustainable, affordable yet durable options available for cooling? To answer some…

As visitors arrive at Kempegowda International Airport, they are welcomed by lush indoor greenery designed to showcase Bengaluru's identity as the "Garden City." Beyond the airport gates, however, the reality is starkly different. Roads and streets all over the city are losing the green cover that once defined its character, to make way for metro lines, elevated corridors, and road-widening projects. Development is essential for a growing metropolis. But when it comes at the cost of thousands of trees, it raises a difficult question: can Bengaluru continue to build for the future without erasing the very landscape that made it…