History Facts & Stories on Instagram: "In 1939, inventor William E. Urschel created the world’s first 3 D printed building behind a small warehouse in Valparaiso, Indiana. The experimental structure was produced using a custom built mechanical system that continuously extruded layers of concrete to form walls directly on site, reducing the need for traditional formwork and manual labor. The following year he would file a series of patents for a Wall Building Machine, describing a method for auto

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cute cat on Instagram: "In Japan, researchers are using smart walkways to turn everyday activities into clean energy 4. These roads are embedded with special piezoelectric material that can collect kinetic energy from pedestrians' footsteps. When people walk, run or jump, the road surface is slightly deformed, creating mechanical pressure. Piezoelectric crystals convert this pressure into electrical energy. This energy can be used to illuminate street lights, power public displays, and even moni