A few months ago, John Keefe wrote a Poynter.org How To about using shapefiles. The power of the shapefile, he wrote, is the ability to refer to regions instead of points. But what if your data has ...

Cloud-based mapping service CartoDB has released a beta version of a new tool, Odyssey.js, that lets you create interactive maps in Markdown without knowing how to code. The open source tool lets you ...