Children attend a music class at a school in New Delhi on December 3, 2024. Parents and children rejoiced on December 3 as schools reopened for physical classes in New Delhi despite "very unhealthy" pollution levels persisting in the Indian capital. Delhi and the surrounding metropolitan area, home to some 30 million people, closed schools last month after a toxic smog engulfed the city in an acrid haze. (Photo by Arun SANKAR / AFP) (Photo by ARUN SANKAR/AFP via Getty Images)