At the intersection of molecular biology and materials science, researchers are learning to treat DNA not merely as life's instruction manual but as a construction medium — weaving genetic strands and proteins into hydrogels that sense, respond, and act. A perspective accepted in Science Bulletin traces this ambition from the nanoscale outward, revealing how programmable molecular architectures can give rise to materials that behave, in some ways, like living matter. The promise is profound, but so is the gap: the rules that govern a single DNA strand dissolve into complexity when millions of