Guardian's Data Blog has created a map of every incidence of diplomatic or armed hostilities between North Korea and South Korea over the last sixty years. The map was created using Google Fusion Tables and a database of incidents published by the Congressional Research Service.
Google Fusion Tables is a tool for creating a variety of data visualizations including maps. You can learn more about using Fusion Tables in this post I wrote last winter.
Applications for Education
Last week's violent incident between North Korea and South Korea has put their tensions back in the news. If you're planning to have students investigate this story in your classroom this week, this map of past incidents could help students understand some of the underlying tensions leading up to last week's outbreak of violence.
For more resources about tensions between North Korea and South Korea see Larry Ferlazzo's list.