NOVA scienceNOW
Series 4, Episode 8 (#408)
Data from cave stalagmites and the Mississippi riverbed shed light on earthquakes in the heartland.
Education Record Rights: 1 year from each broadcast.
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Watch full episodes from PBS's signature series, including FRONTLINE, NewsHour, Masterpiece, NOVA and more.
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Program Description: NOVA presents a new episode of "NOVA scienceNOW," the innovative news magazine designed to help viewers keep up with advances in science and technology. Hosted by astrophysicist Neil deGrasse Tyson, the program draws on a range of stories from repairing the Hubble telescope, to the mystery of the Northern Lights to a profile of famed glaciologist Lonnie Thompson.
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Past Episodes
These episodes of NOVA scienceNOW aired in the last few months on Iowa Public Television.



