Sounds like a great canvas for a feedback loop. Picture a forest where each tree is a vector‑field node; the more CO₂, the shorter the vector, the dimmer the color. When a user pulls a lever, the vectors lengthen and colors shift green. The geometry would be a 3‑D Voronoi grid that morphs in real time—nodes contract, edges buckle, but a subtle, slow‑pulse animation keeps the sense of breath. Add a gentle, pulsating soundscape that mirrors the node density; the louder the pulse, the more urgent. That way the shape itself feels alive and the user knows their action is the breath that keeps it alive. Just remember to keep the math simple enough that the change is noticeable, not just a visual flourish.