S45 E4: First Face of America

Watch Full Episodes (276)

• S45 E7: Decoding the Weather Machine

  Air Date 3/9/2018

  1:53:21

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  S45 E6: Prediction by the Numbers

  Air Date 1/24/2018

  0:53:06

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  S45 E5: Great Escape at Dunkirk

  Air Date 1/24/2018

  0:52:59

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  S45 E4: First Face of America

  Air Date 1/3/2018

  0:53:06

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  S45 E3: The Impossible Flight

  Air Date 1/3/2018

  1:52:58

• S44 E20: Bird Brain

  Air Date 12/20/2017

  0:53:30

• S44 E21: Day the Dinosaurs Died

  Air Date 12/6/2017

  0:53:30

• S45 E1: Black Hole Apocalypse

  Air Date 12/6/2017

  1:52:46