When did Horizon Season 28 Episode 21 air?
Horizon Season 28 Episode 21 aired on June 17, 1991.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
In this Horizon episode, we look at the problems facing the Carl Zeiss optics company of Jena and other companies in the scientific sector of the former Eastern block countries. Following the reunification of Germany and the end of the Cold War, harsh economic conditions and the lack of scientific progress over the preceding decades in particular are explored.
Direct answers for episode-level questions and details.
Horizon Season 28 Episode 21 aired on June 17, 1991.
This episode runs for approximately 60 minutes.
Comments coming soon
Discuss episodes with other viewers