The 1966 blockbuster that made dirt... dare I say... sexy?
Explains that different kinds of soil are mixtures of sand, clay, and humus; tells how the weathering of rocks helps make soil; includes simple experiments to show the kind of soil in which different plants grow well.
Practical Effects
Real soil experiments you can do in your kitchen.
Production
Gorgeous 16mm nature cinematography of... rocks crumbling.
Trivia, insights & behind the scenes
US
