Elias looked at the "Living Wall" in his hallway—a vertical patch of moss and ferns. It wasn't just for aesthetics; it served as a system, scrubbing CO2 and VOCs while adding just the right amount of humidity.
Elias reached out and touched the exterior wall. It felt like cool stone, but it was actually a . During the scorching afternoon, the wall absorbed the heat, melting a non-toxic wax hidden within its layers to keep the interior chilled. Now, as the sun dipped and the air cooled, the wax solidified, releasing that trapped warmth back into his living room. "System status," Elias murmured. Sustainable Technologies for Nearly Zero Energy...
Elias remembered his grandfather telling stories of "The Grid"—a fragile, flickering thing powered by burning ancient carbon. In those days, buildings were "leaky," losing 40% of their energy through poor insulation and single-pane glass. Elias looked at the "Living Wall" in his