While it is possible to get worm densities up to as much as 20 kg/m 2 or 4 lbs per square foot (Edwards, 1999), the most common densities for vermicomposting are between 5 and 10 kg/m 2 (1 to 2 lbs per ft 2).
A massive open online course (MOOC) is a model for delivering learning content online to any person who wants to take a course, with no limit on attendance. A short video about MOOCs and the connected age. Recent Spotlight.
openSAP is an Enterprise MOOC platform for massive open online courses, or MOOCs. It is provided by SAP and hosted at the Hasso Plattner Institute in Potsdam, Germany. Everyone can enroll in openSAP courses, which are provided free of charge.