Aristotle first noticed that hot water freezes faster than cold, but chemists have always struggled to explain the paradox. Until now. Water may be one of the most ... Xi and co need to use their theory to predict a new property of water that conventional thinking about water does not. read more
If you remember the dreadfully cold winter of 2013, you might have seen videos like the one we've posted below circulating as 'proof' of the crazy low temperatures. But it turns out this demonstration is actually not that surprising - hot water is in fact known to freeze faster than cold water. read more
Hot water seems to freeze faster than cold water, known as the Mpemba effect. The effect was named after the Tanzanian student who in 1963 noticed that hot ice cream mix freezes faster than a cold one. read more
Hot water can in fact freeze faster than cold water for a wide range of experimental conditions. This phenomenon is extremely counterintuitive, and surprising even to most scientists, but it is in fact real. read more