WASHINGTON (AP) -- After an entire century that included two high-profile government investigations and countless books and movies, we're still debating what really caused the Titanic to hit an iceberg and sink on that crystal-clear chilly night.
Now come two new theories that suggest freak atmospheric conditions could have caused a mirage or an even rarer astronomical event that sent icebergs into shipping lanes.
Disaster experts and Titanic historians say the effort to find natural causes may also be a quest for an excuse -- anything to avoid blaming human folly and hubris for the disaster that claimed 1,500 lives.
The doomed cruise ship went down 100 years ago this week.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.