mromanuk (1318649) writes "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 time. Their technique opens the door to generating negative-Kelvin materials and new quantum devices, and it could even help to solve a cosmological mystery." Link to Original Source
"Consider a spherical bear, in simple harmonic motion..."
-- Professor in the UCB physics department