There are an increasing number of small earthquakes under Alaska's Redoubt volcano. As a mother of boys who love science, this is of interest to our family. This is the kind of volcano that explodes dramatically. No rivers of red lava like Hawaiian volcanoes. They say stores in the area are doing brisk business on the sale of face masks, protective eye wear and car air filters. The U.S. Geological Survey expects an eruption in a matter of days or weeks. Here is a picture of Redoubt's last eruption in 1990.
I still remember the summer Mount Pinatubo erupted. It was much cooler than usual in Southern California.