— A Liberty, Missouri school bus hit two cars that were stopped at a red light yesterday, killing two adults in the cars and sending 23 of the students riding in the bus to the hospital. According to rescuers, several of the students are suffering from life-threatening injuries that range from broken bones to massive head trauma. The cause of the accident is still under investigation, but this latest series of fatal crashes involving school buses has renewed a call to put seat belts in the nation’s 585,000 transport units currently in use.