Philippine volcano explodes, authorities raise alert level

MANILA, Philippines (AP) - The Philippines' most active volcano has exploded thunderously and authorities warn a hazardous eruption is possible within days.Renato Solidum of the Philippines Institute of Seismology and Volcanology and other officials said Mount Mayon ejected a huge column of volcanic fragments, ash and steam into the sky around noon Monday, shrouding nearby villages in darkness.Authorities raised the alert level to four on a scale of five, which means an explosive eruption is pos