social networks

Everybody's talking about Big Data. But what exactly do they mean?

A project involving secondary school students has delivered valuable data for epidemiologists.

How a cute 18th century puzzle laid the foundations for one of the most modern areas of maths: network theory.

We like to think of the human brain as special, but as we reported on Plus last year, it has quite a lot in common with worm brains and even with high-performance information processing systems. But how does it compare to online social networks? In a recent lecture the psychiatrist Ed Bullmore put this question to the test.

Have you got as many friends as you think?
Why do the rich and popular get richer and more popular?
Maths brings down the Mafia
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