Season 4 aired between 02 Sep 1996 and 28 Oct 1998, 12 episodes.
Episodes
E01
America's Highways
02 Sep 1996
E02
Las Vegas Hotels
03 Aug 1998
E03
Oakland Bay Bridge
10 Aug 1998
E04
Transatlantic Cable
17 Aug 1998
E05
The Computer
24 Nov 1996
E06
Plumbing: The Arteries of Civilization
02 Sep 1998
E07
U.S. Mints: Money Machines
10 Sep 1998
E08
Pyramids: Majesty And Mystery
23 Mar 1997
E09
World's Fair: Visions of the Future
24 Sep 1998
E10
Antibiotics
28 Sep 1998
E11
The Police Car
06 Oct 1998
E12
Medical Imaging: The Voyage Inward
28 Oct 1998
E02
Las Vegas Hotels
03 Aug 1998
E03
Oakland Bay Bridge
10 Aug 1998
E04
Transatlantic Cable
17 Aug 1998
E05
The Computer
24 Nov 1996
E06
Plumbing: The Arteries of Civilization
02 Sep 1998
E07
U.S. Mints: Money Machines
10 Sep 1998
E08
Pyramids: Majesty And Mystery
23 Mar 1997
E09
World's Fair: Visions of the Future
24 Sep 1998
E10
Antibiotics
28 Sep 1998
E11
The Police Car
06 Oct 1998
E12
Medical Imaging: The Voyage Inward
28 Oct 1998