When did NOVA Season 21 Episode 20 air?
NOVA Season 21 Episode 20 aired on December 27, 1994 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.
NOVA explores the common threads that link the more than 5,000 languages of Earth, including a controversial theory that claims to reconstruct words from a time when only a handful of languages were spoken, recalling the biblical story of the Tower of Babel.
Direct answers for episode-level questions and details.
NOVA Season 21 Episode 20 aired on December 27, 1994 at 9 PM ET.
This episode runs for approximately 55 minutes.
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