Earthquakes are by no means unique to Japan but they are so common, and often severe, that preparation for them is taken very seriously here. In fact, much effort has been placed into developing technology that can be useful in times of disaster, some of which is for minimizing damage and others are for surviving the aftermath. Join Yuka Matsumoto "On Site" at the 24th Earthquake Technology Expo to see what developers have come up with this year.