When did NOVA Season 4 Episode 15 air?
NOVA Season 4 Episode 15 aired on May 11, 1977 at 9 PM ET.


PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.
In part one of this two-part exploration of the diversity of world languages, NOVA examines how and why the bewildering confusion of languages came about.
Direct answers for episode-level questions and details.
NOVA Season 4 Episode 15 aired on May 11, 1977 at 9 PM ET.
This episode runs for approximately 55 minutes.
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