China launched a navigation satellite on Saturday to be used for everything from tracking forest fires to public security, Xinhua news agency said. With more to be launched in coming years, the system would cover China and neighbouring countries by 2008, before being expanded into a global network, it said. Previous reports said the Compass series would provide clients with positioning accuracy within 10 metres (yards), velocity accuracy with 0.2 metre per second and timing accuracy within 50 nanoseconds. Full Story