The AQI scale categorises air quality from 0 to 500: 0–100 is ‘good’, 100–200 is ‘moderate’, 200–300 is ‘poor’, 300–400 is ‘very poor’, and above 400 is ‘severe’. Doctors have attributed the worsening ...
The effects of Cyclone Fengal have been devastating after the storm made landfall, causing extremely heavy rainfall in coastal regions of north Tamil Nadu and Puducherry. The union territory witnessed ...