Specialized air quality instruments captured a spike in lead, chlorine, and bromine pollution during the L.A. wildfires.

When the planetary parade was at its best view in Kolkata, Bengaluru and Dehradun, the national capital recorded an AQI of ...

Trump has threatened to withhold federal aid from California if the state does not introduce voter I.D. Newsweek's live blog ...

Delhi’s minimum temperature on Friday was 9.8 degrees Celsius, which is 2.3 degrees higher than the seasonal average ...