|
Thick layer of smog and fog engulfed, on November 8, 2017 in Noida, India. The air quality index of the Central Pollution Control Board (CPCB) had a score of 487 on a scale of 500, indicating 'severe' levels of pollution, which can affect even healthy people and “seriously impact” those with existing diseases. (Photo by Sunil Ghosh/Hindustan Times via Getty Images)
|