Mount Redoubt, an active volcano southwest of Anchorage, Alaska, is giving indications that it may erupt soon (the last time was 1989-90). Johan Varekamp, Herald T. Stearns Professor of Earth Science, who analyzed the ash fall created by the volcano's last eruptions discusses in The Los Angeles Times the possible environmental hazards to the surrounding landscape, people and animals that could be produced if the mountain erupts again.