The Philippine Institute of Volcanology and Seismology (Phivolcs) on Tuesday evening, May 11, raised the status of Mt. Bulusan to Alert Level 1 as the active volcano in Sorsogon manifested a "low-level unrest." BULUSAN VOLCANO (PIXABAY / FILE PHOTO / MANILA BULLETIN) Phivolcs said Bulusan Volcano's...