Physicists have developed new tools to help tone down the cosmic "noise" when searching for signs of particles called neutrinos in detectors located near Earth's surface. This method combines data-sifting techniques with image reconstruction methods similar to the computerized tomography (CT) scans used in medicine. It makes the signals of neutrinos produced by a particle accelerator stand out against the "web" of tracks produced by cosmic rays. These cosmic travelers are 20,000 times more numerous than neutrino interactions in the detector. Filtering out the many tracks from cosmic rays should improve experiments on the Earth's surface that are seeking to understand the behavior of the subatomic neutrinos.