Worms are very powerful regenerators of soil, because they transform rotting organic matter into food for more many more organisms, promoting microbial life & aerating soil + making nutrients available for plants. They also make very high quality food for chickens & fish. Here are some ingenious ways of multiplying them more rapidly and how to cooperate with them in making more sustainable systems.
Integral PermaCulture Curriculum > 3. Earth Care > 2. Regeneration > B. Biomass & Bugs Techniques >