Nasa to resume shuttle missions By Daniel LakBy Daniel Lak BBC correspondent in Miami The US space agency (Nasa) says the first space shuttle mission since the Columbia disaster of 2003 is to be launched next May or early June. All shuttle missions had been suspended pending investigation of the accident, in which seven astronauts died. Improvements have also been made to the orbiter and its fuel tank system. Plans to resume the launches in March were put back after hurricanes hit east Florida, where the Kennedy Space Center is located, in July and August. The Nasa official in charge...