When did NOVA Season 31 Episode 17 air?
NOVA Season 31 Episode 17 aired on April 20, 2004 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 investigates the impact of forces that are radically changing populations in both rich and poor nations.
Direct answers for episode-level questions and details.
NOVA Season 31 Episode 17 aired on April 20, 2004 at 9 PM ET.
This episode runs for approximately 55 minutes.
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