How 'big data' is changing lives

Data is increasingly defining us – from the information we share on the web, to that collected by the numerous companies with whom we interact. Intrigued by the sheer scales involved, photojournalist Rick Smolan wanted to see how data was transforming the world.

Here, as part of the BBC News – What If? season, take a look at his global snapshots – compiled in his book The Human Face of Big Data.

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