Absolute Zero is supposed to be the absolute coldest temperature there is. You just can't go any lower than that. Pretty simple, right? Well, apparently no one defined "absolute" to a group of German scientists, who took on the age-old question of "How cool is cool?" for themselves. Nature Huh. Looks like Lord Kelvin's getting the cold(er) shoulder. Sure, it's only a few billionths we're talking about here, but as far as "temperature limbo" goes, that's still an amazing breakthrough. They shimmied below a threshold that was supposed to be absolute, after all. This isn't some useless endeavor, either. The techniques and results could be turned towards creating new types of matter in the laboratory, and could theoretically play a role in the development of quantum devices. Plus, since the behavior of sub-absolute zero gas seems to mimic that of so-called "dark energy", it could help us better understand this mysterious force. Needless to say, these guys shouldn't have their assets frozen anytime soon. So the next time you're caught out in the cold, freezing and miserable, just remember that it could always be colder; science is making sure of that.