When did Horizon Season 35 Episode 4 air?
Horizon Season 35 Episode 4 aired on March 19, 1998.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
In this documentary, Horizon reports on the genetic research of biologist Mike Levine, whose discovery of a mutant fruit fly led to cures for illnesses as diverse as Parkinson's disease and skin cancer.
Direct answers for episode-level questions and details.
Horizon Season 35 Episode 4 aired on March 19, 1998.
This episode runs for approximately 60 minutes.
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