When did Horizon Season 29 Episode 13 air?
Horizon Season 29 Episode 13 aired on April 13, 1992.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
In this report, Horizon presents that scientific observations have shown that the landscape is constantly moving.
Direct answers for episode-level questions and details.
Horizon Season 29 Episode 13 aired on April 13, 1992.
This episode runs for approximately 60 minutes.
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