Where did language come from? It's often been described as the fundamental barrier between humans and animals. However, many scientists now believe speech evolved gradually from animal communication. Will Abberley from the University of Oxford argues that some of the most compelling efforts to picture this evolution have been in science fiction, and that these stories still impact on debates about language today. This event was recorded in front of an audience at the Free Thinking Festival at Sage, Gateshead on 01.11.14.

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