John Burn-Murdoch from the FT Interactive team talks to Martin Zaltz Austwick about what Data Journalism is, and where it's heading.

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John Burn-Murdoch is a data journalist at FT interactive, having previously worked at the Guardian datablog. You can see his recent work here http://blogs.ft.com/ftdata/author/johnburnmurdoch/ or follow him on twitter @jburnmurdoch too.

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This week's host is Martin Zaltz Austwick, who lectures on visualisation at CASA; you can chat to him at @sociablePhysics on twitter, and his blog is http://sociablePhysics.com .