This weekend marks the 100th anniversary of the assassination of Archduke Franz Ferdinand and his wife, often cited as the spark that ignited World War One. This week on KPR Presents, we'll look at the events of that day, the global politics of the time, and how the National World War One Museum in Kansas City is marking the occasion. We'll also hear about a University of Kansas project to reenact the events of June 28th, 1914, on Twitter.