Spain Retrofitting Buildings With Algae Panels That Produce Fuel and Absorb CO₂ In Spain, buildings are being upgraded with algae-filled façade panels that act like living power plants. These panels absorb carbon dioxide from the air while using sunlight to grow algae that can later be processed into biofuel. Beyond energy generation, the system also improves insulation and reduces indoor temperatures—turning architecture into an active climate solution. Important Details: • Algae panels install