1.   No casualties were reported from the crash, but Kazak authorities said that rocket fuel has damaged the environment and that some people have reported health problems.

2.   No casualties or injuries were reported from the crash, but Kazak authorities said that rocket fuel has damaged the environment and that some people have reported health problems.

3.   Discovery began leaking nitrogen tetroxide from a steering thruster shortly after its launch Friday, and the Russians are nervous that the fuel could damage their space station.

4.   Discovery began leaking nitrogen tetroxide from a steering thruster shortly after its launch on Friday, and the Russians are nervous that the fuel could damage their space station.