Who owns and profits from our data, both big and small, has become one of the defining issues of the post-internet age. In their new book, Data Grab, critical media theorist Ulises A. Mejias and sociologist of media and culture Nick Couldry argue that big tech companies are taking away private citizens' most basic natural online resource and in the process establishing a new form of oppressive digital colonialism. Joining them to discuss the book is the writer and presenter Timandra Harkness, whose own books include Big Data: Does Size Matter? And the recent Technology is Not the Problem.

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