Season 8 · Episode 22
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Earth is Round
Tue, Nov 26, 2013
Nina investigates how we know the Earth is round.
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Tue, Nov 26, 2013
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Nina and the Neurons
140 episodes
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S8 · E22
in Nina and the Neurons
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Deserts
S8 · E23
Deserts
Wed, Nov 27, 2013