A sensationalist headline (as always, from newscientist), but it's talking about a phenomenon called population inversion, and its relationship to absolute zero

A sensationalist headline (as always, from newscientist), but it's talking about a phenomenon called population inversion, and its relationship to absolute zero is extremely tenuous (and it is certainly not below it). http://en.wikipedia.org/wiki/Population_inversion http://en.wikipedia.org/wiki/Population_inversion