(Eagle News) — An alert level 4 remains hoisted over Taal volcano, as its sulfur dioxide emission spiked to an average of more than 4000 tons on Wednesday, Jan. 15. In an advisory on Thursday, Jan. 16, the Philippine Institute of Volcanology and Seismology said the average of 4186 tons was despite the general waning of Taal’s activity in the past 24 hours, characterized by a weak emission of steam-laden plumes 700 meters high that […]