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It may sound less likely than hell freezing over, but physicists have created an atomic gas with a sub-absolute-zero temperature for the first time1. Their technique opens the door to...
At extremely cold temperatures, the quantum nature of matter expresses itself in unique collective behaviors. These include superconductivity, superfluidity, and Bose-Einstein...
FOR centuries, con artists have convinced the masses that it is possible to defy gravity or walk through walls. Victorian audiences gasped at tricks of levitation involving crinolined...