When did NOVA Season 44 Episode 25 air?
NOVA Season 44 Episode 25 aired on November 8, 2017 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.

All over the world, scientists are discovering traces of ancient floods on a scale that dwarfs even the most severe flood disasters of recent times. What triggered these cataclysmic floods, and could they strike again? In the Channeled Scablands of Washington State, the level prairie gives way to bizarre, gargantuan rock formations.
Direct answers for episode-level questions and details.
NOVA Season 44 Episode 25 aired on November 8, 2017 at 9 PM ET.
This episode runs for approximately 55 minutes.
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