NASA Delays Endeavour Launch for Fourth Time

Thunderstorms have caused yet another delay in the Endeavour launch -- the fourth since its planned departure at the beginning of last month. Two launches were scrapped over hydrogen leaks, and another this month because of lightning strikes.

Pete Nickolenko, NASA's launch director, said: "Looks like the team is ready but the weather is not. At this time, we are no-go." The decision was made just moments before the shuttle was set to launch.