TV
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.
Last Episode Aired
1986-03-29
S1E100 — Episode 100
Billed Cast
Naomi Matsui
お姉さん
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