Philippine authorities raise alert over one of most active volcanoes (dpa German Press Agency)

Manila (dpa) – Philippine authorities on Tuesday raised the alert level over one of the country’s most active volcanoes after an ash explosion occurred overnight. The blast from Mount Kanlaon in Negros Oriental province produced a white plume of up to 1.5 kilometres high above its summit, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.…