# The Aging of lakes

Traces the aging process of lakes, showing how man's interference with the environment causes critical changes in the natural ecology. Describes efforts to preserve and restore damaged lakes. Search Educational Film Journals at Media History Project for references to this film

- Kind: Educational
- Year: 1971
- Runtime: 13 min
- By: Encyclopaedia Britannica Educational Corporation
- Genres: Education, Nature, Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/theagingoflakes)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/theagingoflakes?play=1)