Environment

“Panchhi nadiya pawan ke jhonke, koi sarhad na inhe roke…”  (Birds can fly where they want/ water can take its course/ the wind blows in every direction/ no barrier can stop them) — thus go the Javed Akhtar penned lyrics of the song from the movie Refugee (2000, J. P Dutta). As I read about the Panje wetlands in Uran, I wondered if these lyrics hold true today, when human interference is wreaking such havoc on natural environments, and keeping these very elements out. But then, I also wondered if I should refer to Panje, a 289-hectare inter-tidal zone, as…

Global carbon dioxide emissions continue to soar despite climate agreements like Kyoto and Paris. Should this be the path we tread? Since the Kyoto Protocol was signed in 1997, annual carbon dioxide emissions have surged by an average of 1.7%. This is in stark contrast to the 0.9% increase seen in the seven years prior (1990-1997) to the signing of the Kyoto Protocol. The exclusion of the world's biggest polluters — United States, China and India — is the primary cause of the failure of the Kyoto Agreement. Vehicular emissions contribute significantly to air pollution in Bengaluru. Pic: Jyothi Gupta…

In recent years, air quality in Mumbai has significantly declined, raising serious health and environmental concerns. Reports indicate a 305% rise in air-pollution-related complaints over the last five years, with studies suggesting a 30% increase in pollution. Key factors contributing to this deterioration include complex weather conditions, such as La Nina, which slows down the wind movement and traps pollutants, along with emissions from local sources and pollutants from neighbouring areas. Over the years, managing air quality within a city’s boundaries has been proven to have limited impact only. Scientific evidence shows that pollution from one area can travel to…

For years, we have lived in the shadow of the Kodungaiyur dump yard in Chennai, and it has been challenging. The news of a Waste-to-Energy (WTE) plant being planned in the area has added to our concerns. The Greater Chennai Corporation (GCC) has already issued a tender for the plant, and the bidding process is underway. In response, many civil society organisations in Chennai have collectively written a letter to the Tamil Nadu Pollution Control Board (TNPCB), to protest the construction of the plant.   In the letter, we demanded: Scrapping of the WTE incineration projects in the Kodungaiyur area…

Delhi's vibrant colours pale as the city gasps for air each winter. Pollution levels soar, with the AQI often exceeding 500. In 2015, the Delhi High Court dubbed the city a ‘gas chamber’ due to its escalating pollution, demanding urgent action from both State and Central governments. With the air quality dipping each year, Delhi implements various measures to combat this crisis. One is the odd-even rule, which the government tried for a few years with limited success.   This year, in response to rising pollution levels, the Graded Response Action Plan (GRAP) was enforced, introducing specific rules based on pollution…

Imagine a scenario where Chennai's residents can access real-time air quality data of their surroundings to decide whether to step out, stay home, or avoid certain routes. This level of air pollution monitoring could well be a reality soon. Currently, Chennai relies on two main systems of air quality monitoring — manual monitoring stations and Continuous Ambient Air Quality Monitoring Stations (CAAQMS). While these are crucial, they come with high operational costs; around Rs 3 lakh for manual stations and several crores for CAAQMS setups. The Indian Institute of Technology Madras (IIT-M) has developed a mobile air pollution monitoring sensor…

Whenever rainstorms hit and the Adyar River swells, the residents living beneath the Saidapet Bridge hold their breath, silently praying for reprieve. The haunting memories of the catastrophic 2015 floods, when the river overflowed and submerged the bridge, still linger. Many homes were inundated and belongings were swept away, leaving a lasting impact on the community. This happened again during the December 2023 floods. That's why, residents here live in constant fear. On Saturday, as Cyclone Fengal brought severe thunderstorms and gusty winds over Chennai, they just clung to hope that the flood waters would not reach their homes. Read…

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…