Environment

We have just come to the end of a week that has seen unprecedented mobilisation across our cities and towns over the issue of climate change and environmental justice. On September 23rd, 16-year-old Swedish climate activist Greta Thunberg came up with yet another passionate and angry outburst against global leaders at the UN Climate Action Summit 2019. "You have stolen my dreams and my childhood with your empty words. And yet I'm one of the lucky ones. People are suffering. People are dying. Entire ecosystems are collapsing. We are in the beginning of a mass extinction, and all you can…

We have just come to the end of a week that has seen unprecedented mobilisation across our cities and towns over the issue of climate change and environmental justice. On September 23rd, 16-year-old Swedish climate activist Greta Thunberg came up with yet another passionate and angry outburst against global leaders at the UN Climate Action Summit 2019. "You have stolen my dreams and my childhood with your empty words. And yet I'm one of the lucky ones. People are suffering. People are dying. Entire ecosystems are collapsing. We are in the beginning of a mass extinction, and all you can…

As with any large urban centre, Chennai contributes most towards the economy of Tamil Nadu. Economic activity is concentrated in and around Chennai; multiple factories and manufacturing units are located on the outskirts of the city and there is significant commercial and residential expansion as well. This means, the city also consumes more energy and resources and as a result generates more waste in many forms. The effects of climate change cannot be ignored. Over the past few years, Chennai has witnessed extreme weather events -- from historical flooding to more recently, acute water scarcity. As the city continues to…

Maram valarpom, mazhai peruvom (Plant trees, get rain) is a common refrain across the state, echoed to promote greening initiatives. Tree planting drives are common activity in many quarters. From educational institutions to charitable organisations,z all engage in tree planting initiatives to mark important occasions. But how effective are these efforts? What happens to the saplings that are planted? Do they really contribute to greening the city? Chennai's shrinking green cover Chennai has suffered considerable loss of green cover over the last two decades. A study by the Care Earth Trust in the aftermath of cyclone Vardah, that devastated large…

"You ain’t gonna miss your water until your well runs dry": Bob Marley Why did Indo-Aryans move towards Indus Valley and then to the Ganges Plain? Why did Dravidians settle near rivers? There may be several reasons. But, with the water crisis we are facing, I think we now know the answer - water. Civilisations flourished where water was available. The clock is ticking, and we need to do what is vital for our survival - save water. According to news reports, our city may turn uninhabitable in the next few years due to rapidly-depleting groundwater levels. Rainwater harvesting (RWH)…

We often hear about encroachments and solid waste sounding the death knell for water bodies in Chennai. Villivakkam Lake is no exception; it shares the same plight as any other water body in the city. However, it is set to change. Corporation officials say that the transformation of this 36.5 acre lake will be revolutionary -- replete with state-of-the art recreation facilities such as walkway, gym, children's play area, library, food and play courts, open air theatre and a multipurpose lawn. Greater Chennai Corporation will adopt Bhabha Atomic Research Centre (BARC)’s natural process of treating wastewater and use it for…

It is impossible to visit Bengaluru for the first time and not be surprised by many of its urban aspects - from its noise and pollution to its ingenious ways of moving thousands of people by auto rickshaws; from its densely-packed streets to its large parks; from its lack of drinking water and its foaming and burning lake to its growing network of metro stations; from its pressing inequality to its booming IT industry; from its growing informal housing and business to its rich mixture of cultures and history, food and markets, old bookshops and new and trendy art galleries. Bengaluru presents…

A study published in the Journal of Remote Sensing and Space Sciences, analyzing the cooling effect on the city of Ahmedabad’s water bodies, has thrown up some interesting findings. The east bank of the Sabarmati river, which flows through Ahmedabad, was found to be significantly cooler than the west bank, witnessing a greater drop in temperature even during summer. The study provides direct evidence of how water bodies affect temperature variations. The Sukhna lake in Chandigarh and the Sabarmati river in Ahmedabad were taken up in the study, to assess the variations in microclimate near these water bodies. Urbanization has resulted in…

The timber mafia in Jharkhand. Rampant mining in Jharkhand and Goa. Overdependence on borewells and low groundwater recharge in Andhra Pradesh -- Deforestation, unsustainable land use practices and the slow but steady expansion of urbanised, industrial areas have led to nearly 30 per cent of India’s total land area undergoing degradation. Thus concern over desertification, which is expected to affect 900 million people in 100 countries (mostly in the global south) and which threatens almost 41 per cent of the total land area on the Earth, is a real concern for every citizen in this country. The 14th Conference of…

It has been raining on and off in Chennai over the past few weeks. And yet, 59-year-old P Mary from Saidapet has a recurring nightmare waking her up in the middle of the night every other day. In her dream, she is invariably exerting herself on the lever of the hand pump. After what seems like endless minutes of strenuous labour, water drips from the tap, drop by drop, a pale yellow colour. Reluctantly, she empties the pot, for there's a perceptible stench emanating from the water. Now, she has to again pump for another five minutes in order to…