North Korea has set off an atomic bomb in the one kiloton range. How much damage can it do?
This website uses Google Maps to show how much area nukes of different yeilds can damage and destroy. Select a major city, or put in the longitude and latitude of your house, and see what happens. The default setting is for a 100-kt blast -- about nine times more powerful than the Hiroshima bomb and 100 times more powerful than what North Korea is believed to have tested. (Meyerweb.com)