Rice becomes weaker when compressed quickly, while staying stronger under slow pressure—a discovery enabling scientists to design a new material that could be used to build “soft” robots that change stiffness automatically and protective gear that adapts to impact speed. Researchers harnessed this effect to design a new “metamaterial”—an artificially engineered composite structure designed to behave in ways impossible for natural materials.Rice becomes weaker when compressed quickly, while staying stronger under slow pressure—a discovery enabling scientists to design a new material that could be used to build “soft” robots that change stiffness automatically and protective gear that adapts to impact speed. Researchers harnessed this effect to design a new “metamaterial”—an artificially engineered composite structure designed to behave in ways impossible for natural materials.[#item_full_content]