Pakistani authorities announced that schools would reopen Wednesday in Punjab, the country's most populated province, after a drop in dangerous air pollution.Schools have been closed for nearly two weeks in the province,

Pakistan's Punjab declared a health emergency due to toxic smog on Friday, banning construction, shutting schools for another week and moving universities online, with a three-day lockdown possible, the province's senior minister said on Friday.

The U.N. children’s agency is warning that the health of 11 million children in Pakistan’s eastern Punjab province is in danger because of air pollution that experts say has become a fifth season in recent years.