If you are revising volcanoes the Chilean eruption that has just happen would be a good up to date case study. Watch videos about it on these links.
Chaiten Volcano – clip http://www.youtube.com/watch?v=6btWVddhkaY Volcano forces villages to be evacuated http://www.youtube.com/watch?v=wm-SiMJmWo4 Locals stay put as volcano erupts http://video.news.sky.com/skynews/video/?&videoSourceID=1314947&flashURL=/feeds/skynews/latest/flash/volcano_p6299.flv
