Online learning, an answer to hazy days

A security guard closes the school gate due to unhealthy API readings. — File photo

CLOSE to two million students in over 2,000 schools were recently affected by school closures in several states, following the worsening haze condition.

A total of 2,459 schools in several states were closed, following the Air Pollutant Index (API) exceeding 200 in these areas.