Do Rocks Contain Traces of Dark Matter?

For the past two decades, scientists have constructed a variety of experiments, including cryogenic detectors and tanks of liquid xenon, around the world in hopes of spotting the scantest signs of elusive dark matter particles. But time and time again, they've come up empty-handed. Now a team of scientists propose a completely different approach. Image Credit:Michael Coghlan via Flickr (CC BY-SA 2.0) "How about if instead of watching ever more nuclei for a few years, you could have some sort of ...