Factories, schools shut as Delhi tackles pollution

Indian authorities on Friday shut factories and construction sites, restricted diesel-run vehicles and deployed water sprinklers and anti-smog guns to control haze and smog.The Delhi government closed primary schools and restricted outdoor activity for older students as the air quality index exceeded 470, considered "severe" and more than 10 times the global safety threshold, according to the state-run Central Pollution Control Board.

The federal government also is considering whether to permit work from home for its offices.Prime Minister Narendra Modi has said the country will aim to stop adding greenhouse gases to the atmosphere by 2070 — two decades after the U.S. and at least 10 years later than China.