In its purest form (with no extra debris), liquid water can exist as a liquid until -40°C if left still (unmoving). In order ...

These are both liquid and frozen water droplets. They are at the same temperature, but the frozen droplets contain an ice ...

The Mpemba effect sounds like it should be easy to debunk: hot water freezing faster than cold water? That's backwards. But under certain conditions, it actually happens, and physicists have been ...