0 degrees Celsius is just the starting point from which water begins to freeze. Scientists took tiny particles of liquid and saw that they can keep them liquid when they come in contact with soft surfaces such as gels or lipids.
“We have found that if a drop of water is in contact with a soft surface, the freezing point can be significantly lower than on hard surfaces. A water droplet several nanometers in size may not freeze at -44 ° C if it is in contact with a soft surface, ”the researchers explained.
Prior to their discovery, the freezing point of a drop of water was -38 ° C.