Two teams of researchers working independently of one another have discovered some remarkable features of liquid water—it can be chilled to −42.55°C and it appears to have what is described as a singularity. The first team, made up of members from across Europe, conducted experiments designed to find the lowest temperature at which liquid water can exist. They have published their results in the journal Physical Review Letters. The second team, with members from Sweden, Korea and Japan sought to learn more about the attributes of liquid water when chilled to very low temperatures. They have published their results in the journal Science. Paola Gallo with Università Roma Tre and Eugene Stanley with Boston University offer a Perspective piece on the work done by the two teams in the same Science issue.