Since 1955 Progress in Low Temperature Physics has continued to monitor scientific achievements in the realm of low-temperature physics. In the old days, obtaining low temperatures was an aim in itself, whereas nowadays achieving millikelvin temperatures is a routine experimental procedure. However, the properties of materials at these lowest temperatures continue to produce fascinating physics: the liquid, solid and superfluid phases of the quantum fluids 3He and 4He as well as "new" materials such as high-temperature superconductors and tiny quantum devices display their macroscopic quantum behavior at the lowest temperatures.