Build an Ecosystem: The Earth-Sheltered Solar Greenhouse

This article describes the construction and uses of a complete ecosystem an underground hydroponic greenhouse and aquaculture tank powered by the wind, heated by the sun and fed on compost. The idea for this project has evolved slowly over the past few years. Here the basic principle of Grow-hole was also mentioned. Originally published as "Build Your Own Ecosystem" in the July/August 1974 issue of MOTHER EARTH NEWS.

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