I love ideas from other cultures, other climates...and this is a fabulous one. (Posted by Kate, Australia) The earth’s center is a molten core of magma which heats the entire sphere. At approximately 4’ from the surface this heating process becomes apparent as the temperature on most of the planet at 4’ deep stays between 50 and 60º F. When the temperature above ground is cold, say 10º F with a cold wind, the soil temperature at 4’ deep in the earth will be at least fifty degrees in most places. By digging the Walipini into the ground, the tremendous flywheel of stable temperature called the ‟thermal constant” is tapped. ....
Posted on: Fri, 21 Nov 2014 21:23:29 +0000
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