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.
South Africa's University of the Witwatersrand is now able to offer massive open online courses - known as MOOCs-to a global learning audience through its partnership with edX, a non-profit online learning provider founded by the Massachusetts Institute of Technology (MIT) and Harvard University in the US.his is a pioneering, innovative project spearheaded by Wits, which will indeed unlock new opportunities in South Africa and through the rest of the continent, Prof Adam Habib, Vice-Chancellor and Principal of Wits University, said.