Air pollution remained extremely high in the Indian capital on Thursday, a day after authorities closed schools indefinitely and shut some power stations to reduce smog that has blanketed the city for much of the month. New Delhi’s air quality remained “very poor,” according to SAFAR, India’s main environmental monitoring agency. The concentration of tiny airborne particles less than 2.5 microns in diameter — known as PM 2.5 — neared 300 micrograms per cubic meter in some parts of the city, it said. The World Health […]