I list Shelter after Air, Water,and Food but actually is doesn’t follow a set time imperative like the first three. None of the chemical reactions of metabolism occur except at a viable core body temperature. If we are too hot or too cold life stops irregardless of air, water, and food .
We are working on shelter systems that address the facts of our less energy/ radical weather future. I have posted some photos of past building projects to illustrate my construction experience. I started with the foundation.