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, theoy 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…