Technicians are working to rescue detailed lunar imagery from obsolete videotape. In Spain, GPS technology is used to track a city's buses and adjust its timetables. Locusts may be pests but they are of great research value to scientists at Newcastle University who are studying the locust's collision-avoiding capabilities on behalf of pedestrian safety. Studies have shown that the practice of lowering a patient's blood sugar levels in Intensive Care Units may be harmful rather than helpful. And we look at Big Ben, London's most famous clock, which is celebrating its 150th birthday and still running remarkably well.