Meograph launched to the public as a four dimensional storytelling tool. Using Meograph you can build map and timeline-based stories. Today, Meograph announced via email that you no longer have to include locations in your story. So if locations aren't important to your narrated story you can simply build a narrated timeline.
The other announcement included in Meograph's email today is that the authoring and playback tools are fully supported in all modern browsers (if you're using Internet Explorer 8 or earlier it's time to update).
Applications for Education
Meograph offers a nice way to create narrated map-based and timeline-based stories. Much of what Meograph offers can be accomplished in Google Earth. However, Meograph is browser-based so that students can create stories even if they cannot install Google Earth on their computers.