The University of Wisconsin-Madison is returning to Coursera for seconds next year when it undertakes delivery of six new massive open online courses on the MOOC platform during 2015-2016. Whereas the institution?s original experiment involved four disparate classes, this time the theme will be relationships: among people, among communities and between humans and the natural world. The original four-course pilot drew 135,600 registrants from every state and 141 countries.