Delhi's AQI reaches 481 in 'severe-plus' category, triggering Stage 4 GRAP measures, including a ban on truck entry, construction halt, and advisories on school closures and work-from-home options due to smog and low visibility.
The United States is facing a dilemma over what to do with its ageing nuclear power infrastructure, with the decision to retire or upgrade the reactors that currently supply about 20% of the nation's electricity.