| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E02 | Las Vegas Hotels |
August 3, 1998
H2
|
44 | |
| S04E03 | Oakland Bay Bridge |
August 10, 1998
History
|
44 | |
| S04E06 | Plumbing: The Arteries of Civilization |
September 2, 1998
H2
|
44 | |
| S04E07 | U.S. Mints: Money Machines |
September 10, 1998
H2
|
44 | |
| S04E10 | Antibiotics |
September 28, 1998
H2
|
44 | |
| S04E13 | Extreme Sports Gadgets |
October 4, 1998
H2
|
44 | |
| S04E18 | Weather Prediction |
December 7, 1998
H2
|
44 | |
| S04E21 | Stereos |
December 16, 1998
History
|
46 | |
| S04E22 | Mail Delivery: Erasing the Miles |
December 23, 1998
H2
|
44 | |
| S04E26 | Airships |
January 1, 1999
H2
|
44 | |
| S04E28 |
History of Tall Buildings
season finale
|
February 8, 1999
H2
|
44 | |
| S04E29 | Engineering Disasters |
February 22, 1999
H2
|
44 |
No artwork of this type.
No artwork of this type.
No artwork of this type.