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2:41
Engineers had to consider all possible events that might happen in a high rise building.

2:14
The design & construction of the towers marked a dramatic break with skyscraper tradition.

1:32
Unlike earlier skyscrapers, the twin towers were erected in huge prefabricated components.

1:50
The unprecedented height and size of the towers posed a new kind of challenge: wind.

19:57
James Baldwin's appearance on Boston Public television alongside MLK and Malcolm X.

1:36
Hamilton's opposition to slavery stemmed from his hatred of seeing human potential wasted.

6:42
One of Hamilton's most farsighted contributions was the creation of a central bank.

1:07
Partisan politics were a part of public life from the republic's earliest years.

9:53
Watch a preview of Test Tube Babies.

9:47
The first chapter of American Experience's "Annie Oakley," broadcasting January 31.

9:54
MLK appears on Boston public television alongside Malcolm X and James Baldwin.

2:13
Dr. Kenneth Clark introduces the segment "The Negro and the American Promise."