DARPA’s ELM developing Living Structural Materials for self growing & self repairable smart buildings and smart military bases on demand

The cities of today are built with concrete and steel between they are responsible for as much as a tenth of worldwide carbon emissions. Before they ever reach a construction site, both steel and concrete must be processed at very high temperatures – which take a lot of energy. And yet, our cities are completely dependent on these two unsustainable materials. In addition Concrete erodes. Time and stress and the mere passive forces of being outside pull apart and chip away at stone. In remote or vulnerable environments, where supplies are hard to come by but rocket or mortar attacks are possible, stone structures that protect people may be under more strain.