Pangea Biotecture organizes its work around six integrated systems. Every complete regenerative building or community engages all six. The Primer introduces each one; the other books in this series explore each in depth. Structure and Materials — The physical fabric of the building, built from natural, low-embodied-energy materials: recycled tires, cob, adobe, straw bale, hempcrete, can and bottle walls, and natural plasters. The structure is also the building’s primary thermal mass and its first line of climate control. Energy — Passive solar design first: orientation, thermal mass, and glazing positioned to harvest winter sun and exclude summer heat. Then active systems: off-grid solar photovoltaic arrays, battery storage, and where appropriate, wind generation. The goal is a building that produces all the energy it needs from renewable sources, with no grid dependency. Water — Rainwater harvested from the roof and stored in cisterns, filtered to potable standard, and heated by solar…