Wheelchair rugby is gearing up to the medal events on Sunday. If you placed a player of this impressive game next to a physics professor you probably wouldn't have much trouble spotting who's who. Yet, there's an intriguing connection between rugby and one of the more puzzling areas of physics.

One thing that's characterised the London 2012 Games is its great atmosphere — and that's largely down to the tens of thousands of volunteers who've donated their time, effort and enthusiasm to the Games. For most of them this will probably be a once-in-a-lifetime experience. But it's also possible to be part of big sporting events like this one and earn money at the same time...

Relay races are exciting to watch, but for coaches and athletes they pose a particular conundrum: in what order should the athletes be deployed — should the fastest come first, last, or somewhere in the middle?

The Olympic Stadium and the Aquatics Centre are taking centre stage again as medals are being awarded in both athletics and swimming. Not any old pool or running track qualifies as an Olympic venue...

Inspired by Sara Storey's phenomenal gold medal we calculate whether we, and our bikes, have what it takes to triumph in our newfound quest for speed!

Wheelchair racing is one of the most exciting disciplines in the Paralympics. And it's not just a wheel-based equivalent of Olympic racing: John D. Barrow, mathematician, cosmologist and prolific popular science writer, has spotted an important difference.