The Walls That Work Back: Inside the Science of Carbon-Sequestering Insulation Materials
For decades, insulation has been understood as a passive barrier against heat loss, but a new generation of bio-based and algae-derived materials is challenging that assumption entirely. Researchers and builders are discovering that the cavities inside American walls may represent an underutilized front in the fight against atmospheric carbon. Here is what the science shows, and why the next renovation project on your street could quietly become a climate intervention.