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Why is seawater salty? What causes volcanoes to erupt? Why don't man-made satellites fall from the sky? What makes people sleepy? Answers to these questions and more are in this animated title which explores topics of nature, customs, and technology.
First Air Date : Apr 07, 1984
Last Air date : Mar 29, 1986
Episode : 100 Episode
Season : 1 Season
Runtime: 30:14 minutes
Studio: TBS
Country: Japan
Cast: Naomi Matsui
