Find out how OKCupid's algorithm works.

In 2012 the UK government launched a list of the Eight Great technologies of the future. Here's what they are and what role maths has to play in them.

Networks loomed large at the AAAS annual meeting in Vancouver, in particular the one you're looking at right now: the Internet. Plus went along to a session on web surveillance. It sounds sinister at first, but as we found out, it's not all about Big Brother breaching your privacy. Information on the web can help us catch terrorists and criminals and it can also identify a widespread practice called astroturfing.

Have you got as many friends as you think?