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.
Runtime: 30:14 minutes
Quality: HD
First air date: Apr 07, 1984
Last air date: Mar 29, 1986
Episode: 100 Episode
Season: 1 Season
IMDb: 10
Keywords:anime
