DVD 414.00 Why the towers fell (60 min.) For most people the image of the collapse of the World Trade Center Towers on Sept. 11, 2001, was not only a scene of unforgettable horror, it was a moment of unimaginable consequence. This follows a blue ribbon team of forensic engineers as they begin searching for clues that would tell them why the towers fell. From detailed examination of the buildings original design to the relentless process of searching the scrap steel yards and Ground Zero itself for evidence.
DVD 1497 Witness: Katrina (90 min.) National Geographic weaves together more than 100 sources from amateur videographers, news crews, government agencies, tourists, storm chasers and others who were recording the sights and sounds of the unfolding chaos of the most chronicled natural disaster in history.
