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1:22
After a 5-day trial, Emmett Till's killers are acquitted.
4:47
Journalist William Langewiesche tells the story of one 9/11 survivor.
8:19
Historian Niall Ferguson talks about globalization and 9/11.
11:07
An interview with the President of the World Trade Center Association, Guy Tozzoli.
3:47
An interview with former New York governor Mario Cuomo.
4:21
Architecture critic Ada Louise Huxtable discusses the options for building at Ground Zero.
6:27
High wire artist Philippe Petit discusses his walk between the Twin Towers.
1:33
The streets and buildings of Chicago had to be raised to accommodate a new sewage system.
2:49
Engineers plan a pipe system to deliver clean water to Chicago from Lake Michigan.
0:57
Improvements in elevators and the creation of structural steel made skyscrapers possible.
1:06
The sad story of Emmett Till spurred the Civil Rights movement.
1:04
Emmett Till's great-uncle and cousin remember the night he was taken.
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