IT'S A WHOLE MOOC WORLD: When it comes to MOOCs, everyone seems obsessed with enrollments and completion rates. But there's a sea of other (potentially more) valuable data out there. Now, thanks a visualization tool created by HarvardX research fellow, Sergiy Nesterko, and MIT postdoctoral research fellow Daniel Seaton, we can now see the broader picture about who the "students" are. Fascinating data awaits: For instance, Georgia (the country) and Belarus top the list when it comes to to percentage of registrants who earned a certificate. Here are the infographics for HarvardX classes; MITx's are here.