Crowded/Uncrowded: Human Survival/Controlling Densities

REHASHED FROM PREVIOUS FOUR EPISODES: Lisa rides a hot-air balloon. FILM INSERT: The elephant struggles for survival in Africa. ADDITIONAL: The black hole.

English

General

Cast & Crew

Originally Aired February 15, 1980
Runtime 30 minutes
Production Code 165
Network PBS
Notes Is a season finale
Created April 7, 2017 by
Administrator admin
Modified April 7, 2017 by
Administrator admin