When did NOVA Season 39 Episode 1 air?
NOVA Season 39 Episode 1 aired on September 7, 2011 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.

To commemorate the 10th anniversary of 9/11, NOVA presents an epic story of engineering, innovation, and the perseverance of the human spirit. With extraordinary access granted by The Port Authority of New York and New Jersey, “Engineering Ground Zero” follows the five-year construction of One World Trade Center (1 WTC) and the National September 11 Memorial & Museum.
Direct answers for episode-level questions and details.
NOVA Season 39 Episode 1 aired on September 7, 2011 at 9 PM ET.
This episode runs for approximately 55 minutes.
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