Before and After the Tsunami in Japan

http://www.nytimes.com/interactive/2011/03/13/world/asia/satellite-photos-japan-before-and-after-tsunami.html

What was interesting about this source was the fact that one is able to see from an aerial perspective the pictures of the effect of the tsunami upon the structures and farmland in the regions that were most devistated. This link also gives one the option to slide a bar intersecting the picture so as to allow one to change from the view of the before and after photographs. It is truly quiet astonishing the destructive force that a large quanitity of moving water has on man-made structures.