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KSJD's 90.5fm and 91.1fm signals are experiencing audio dropouts during high winds. We hope to have the problem fixed soon.

Investigation

NASA engineers are pursuing competing theories about what may have caused the catastrophic breakup of the space shuttle Columbia. NPR's Larry Abramson reports on how forensic investigators keep a constantly open mind until the evidence for one theory becomes so strong that it leaves no room for doubt.

Copyright 2003 NPR