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Swiss Scientists Made The World’s First Photosynthetic “Living” Material (LM) By Embedding Blue-Green Algae (Cyanobacteria) In A Porous, 3D-Printable Hydrogel. The (LM) Converts CO₂ Into Oxygen, Sugars, And Solid Minerals (CaCO₃), Hardening Over 400 Days Into A Strong, Carbon-Storing Structure Ideal For Coating And Strengthening Buildings.

https://www.livescience.com/technology/engineering/scientists-invent-photosynthetic-living-material-that-sucks-co2-out-of-the-atmosphere

Scientists have developed a material with photosynthetic bacteria that convert carbon dioxide into a mineral skeleton. The material hardens over time, so it could be used for buildings, they say.