As part of a series on the rising global phenomenon of online harassment, the Guardian commissioned research into the 70m comments left on its site since 2006 and discovered that of the 10 most abused writers eight are women, and the two men are black. Hear from three of those writers, explore the data and help us host better conversations online
Economist: Virtual University
Mr Christensen predicts that most universities below the upper tier will have to integrate a “second, virtual university” into the standard one. Good online classes would reduce the need for costly campus facilities and free teachers’ time for individual tutoring. Knewton, a for-profit provider of personalised online education, calls that idea the “flipped classroom”.