Mexican authorities canceled in-person classes for more than 100,000 students on Thursday in multiple towns clustered around one of the country's most active volcanoes as its fiery activity intensified in recent days, raising health concerns.
A series of relatively small but powerful eruptions from the snowcapped Popocatepetl volcano prompted Puebla state officials to suspend both public and private school classes at all levels across 22 towns due to falling ash, according to officials.
