Environment

If the outside of the Cubbon Park metro station is devoid of colour, step inside and the station is anything but colourless. On an outside wall of the station is an end-to-end monochrome mural depicting tree trunks and children climbing them. Step inside, to the concourse next to the tracks, and the eye cannot help but catch the large colourful mural that captures the essence of what lies under the sprawling Cubbon Park---a massive groundwater recharge system. The theme that defines the artwork spread across the entire metro station. “The idea is to make water practices in the city visible,…

Translated by Sandhya Raju வாய்ப்புகள் தேடி மக்கள் நகர்ப்புறம் நோக்கி நகரத் தொடங்கியதில் உலகம் முழுவதும் நகரமயமாக்கல் வெகு விரைவாக முன்னேறியுள்ளது. பெருகி வரும் மக்கள் தொகைக்கேற்ப நகரத்தின் உள்ளேயேயும், அதனை சுற்றியும் விரிவாக்கம் செய்யும் நிர்பந்தத்திற்க்கு தள்ளப்பட்டுள்ள நிலையில், வெப்ப நிலை மாற்றம், சுற்றுச்சூழல் பாதிப்பு, அதிக மாசு என அதன் தாக்கம் பல எதிர்வினைகளை ஏற்படுத்தியுள்ளது. 2001 ஆம் ஆண்டு 6.6 மில்லியனாக இருந்த மக்கள் தொகை 2011-ல் 8.6 மில்லியனாக (சென்சஸ் படி) அதிகரிக்க, சென்னையும் இந்த மாற்றத்திற்கு விதிவிலக்கல்ல. சமீபத்தில் வெளியான ஆய்வின் படி, 1991-2016 ஆண்டில் சென்னையில் கோடை வெப்பம் (மார்ச் - மே) 5.8 டிகிரி செல்சியஸ் வரை உயர்ந்துள்ளது. மக்கள் தொகை ஏற்றம், சீரற்ற நகரமயமாக்கல் ஆகியவை இதற்கான முக்கிய காரணியாக அமைந்ததாக குறிப்பிடப்பட்டுள்ளது. நகர்ப்புற விரிவாக்கம் மற்றும் இரண்டு இந்திய மெகாசிட்டிகளுக்கான மேற்பரப்பு வெப்பநிலை மற்றும் அதன் விளைவுகள்:…

Mallathahalli Lake has been in the news the past week, but for all the wrong reasons. There are plans set in motion to “develop” the lake, converting it into nothing short of an amusement park, with the main waterbody forming a sorry backdrop. Despite clear guidelines from the courts and the NGT on how to work around lakes, there are plans to build structures inside the lake. I live close to this lake and regularly go for walks by the lake. Life in and around the lake has always been in profusion, slowing me down on these walks. So it…

Stalin Dayanand is an environmentalist and Director of the Mumbai-based environmental NGO, Vanashakti. His passion for environmental protection and conservation has resulted in many success stories in Mumbai and elsewhere in the Maharashtra.Some of his landmark works include keeping wildlife corridors in the western Ghats  of Maharashtra from falling prey to to mining, securing protection for wetlands in Maharashtra, protecting mangroves in the Thane creek and Sewri and saving over 3000 trees from being cut for a road widening project in Wada.He is campaigning hard to protect 3000 acres of open spaces and forest lands in Aarey Colony Mumbai from being…

India’s urban population went up from 17.9% in 1960 to 34.9% in 2020. Bengaluru’s population in the same time period increased more than 10 times. The city’s urbanisation has led to Bengaluru's Land Surface Temperature (LST) increasing from 33.08℃ in 1992 to 41℃ in 2017 -- a whopping 24% increase! Researchers from the Indian Institute of Technology, Kharagpur have analysed Bengaluru’s urban expansion and how it affected surface temperatures. The study titled Analyzing and Predicting Urban Expansion and Its Effects on Surface Temperature for Two Indian Megacities: Bengaluru and Chennai also predicts the city’s urban area in 2025. Key findings…

Last October, around 700 houses in Bengaluru were damaged after heavy rains and flooding. The saga continues this year - 70 houses were flooded on June 4, and more on July 5. For hundreds of low-income families in Bengaluru, heavy rainfall in the last few years have meant intense damage or even losing their home. Flooding can also lead to the inflow of sewage into slums, which further increases the risk of water-borne and vector-borne diseases. Flooded roads and underpasses don't just choke traffic for hours, but they also increase the likelihood of accidents. Flooding has also been leading to…

Citizens deciding to take a walk on Mumbai's beach to enjoy the monsoon weather, need to beware of getting stung by Portuguese Man-of-War, a marine species that wash ashore on Mumbai’s beaches. Also known as Blue Bottle, they are usually found on Mumbai’s beach during the monsoon season every year. This year too, citizens have spotted hundreds of them at Versova and Juhu beach. Last year, due to lockdown, there were hardly any cases of residents getting stung by this marine species, reported in the city . A group of marine enthusiasts from Marine Life of Mumbai (MLOM), posted an…

Muthulakshmi S, a resident of Kattukuppam village in the Ennore Industrial Cluster spends a good share of her family income on doctors' fees and medicines. “My kids suffer from severe cold and cough infections every two months. The doctor says that it is common among those living here,” says 27-year-old Muthulakshmi, whose kids are seven and three-and-a-half years old.  Her husband is a fisherman who brings home a few hundred rupees on some days, but nothing on many others. Muthulakshmi is not alone, however. Her trials and tribulations reflect those of many women in Ennore, and much of that can…

Urbanisation has been progressing at a rapid pace globally, as people flock to cities in search of better lives and livelihoods. Cities have to 'create spaces' within and outside themselves to accommodate the growing population, but ad hoc expansion leads to environmental risks, high pollution levels and climate change. Chennai, where the population grew from 6.6 million in 2001 to 8.6 million in 2011 (as per the Census figures), has been no exception: The population explosion coupled with unplanned urbanisation raised land surface temperatures in Chennai during summer (March - May) by as much 5.8 degree C over the period…

Chennai can be called a groundwater city. Almost 60% of our daily needs is met from Chennai's groundwater sources, both at the macro and micro levels put together. This groundwater source can be sustained only by harvesting rain. Rain can be harvested in only two ways: Collecting rainwater in masonry/plastic tank for immediate use and/or Putting rainwater into the soil which is known as recharge. Chennai's groundwater bank Groundwater should be thought of as a bank. Extraction of groundwater should be compared to withdrawing money from the bank and recharge to be depositing money in the bank. Recharge is of…