As Michio Kaku said, "Any advanced civilization must grow in energy consumption faster than the frequency of life-threatening catastrophes (e.g. meteor impacts, ice ages, supernovas, etc.). If they grow any slower, they are doomed to extinction." ( http://mkaku.org/home/articles/the-physics-of-extraterrestri... ).

Any guesses how far we are from being able to control volcanoes so that they would not pose a threat? Too far, I would guess.