Our multimedia section features resources that you may find useful.
These include video interviews with physicists, video demonstrations of physics experiments, and video resources for teachers.
Geolocation is about much more than finding your way to obscure pubs down backalleys using your phone. The Guardian has reported on the use of GPS data to help reduce childbirth-mortality in Nigeria, while the BBC tells of a new, high-tech bracelet that employs satnav to try to protect aid workers at risk of being kidnapped. But how does technology know where in the world we are?