NASA engineers worried a day before the Space Shuttle Columbia disintegrated upon re-entry that the shuttle's wing might burn through, leading to a breakup of the craft -- a message they did not communicate to senior NASA officials.
Days before the space shuttle Columbia disintegrated a NASA official warned that damage sustained during takeoff may have been enough to allow super-heated air to breach its left landing gear door.
NASA Administrator Sean O'Keefe on Wednesday told a congressional committee that he could not yet determine what caused the space shuttle Columbia to break up during re-entry on Feb. 1, but said investigation efforts are continuing.
Hundreds of police and soldiers continued their search for wreckage from the Space Shuttle Columbia Monday, covering a growing debris field that cut a swath more than 100 miles long and 10 miles wide across east Texas and Louisiana.
The space shuttle Columbia disintegrated upon re-entry over Texas Saturday morning moments before its seven-member crew was scheduled to land in Florida.
By PBS NewsHour
The following is the text of a NASA statement on the loss of the Space Shuttle Columbia.
French company Clonaid's self-imposed 10-day deadline for providing DNA proof of the existence of the first human clone passed Tuesday without any new evidence from scientists.
Stanford University announced on Tuesday that its researchers will work to create new stem cell lines by employing nuclear transfer technology --a process that can be interpreted as cloning.
When Internet filters in schools and libraries are set at their most restrictive levels, they can block some of the health information that young people seek when they go online, according to a study released by the Henry J. Kaiser…
Ray Suarez speaks with Eric Klinenberg about his new book on the 1995 Chicago heat wave.
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