"Philippines on High Alert as Volcanic Smog Engulfs Capital and Surrounding Areas"
The Taal volcano near the Philippine capital Manila emitted above average sulfur dioxide and volcanic smog, prompting the closure of schools in five cities and urging people to stay indoors. The volcano remains at alert level 1, with increased volcanic activity observed. Volcanic smog, or vog, can cause respiratory illnesses. Classes were suspended in several towns and cities near the volcano, and pilots were advised to avoid flying close to the summit. The Philippines, located in the Pacific "Ring of Fire," experiences frequent volcanic activity and earthquakes.