Coating buildings with this paint may one day cool them off enough to reduce the need for air conditioning.
It generates just a tenth of CO2 emissions of a traditional fired brick and less than a tenth of the energy in its manufacture.
Called Finite, the material is strong as concrete, biodegradable and made from desert sand, which is a resource that has until now been useless for construction.
This fancy brick provides about a third better insulation than a perlite-filled brick of the same structure and thickness.
They could also be used to make bridges and sidewalks, all of which will be highly insulated, much stronger, and a lot cheaper to build.