Dark matter dominates the universe, accounting for over five-sixths of its mass. The protons, neutrons, and electrons you and I are made of are merely flotsam and jetsam on its ocean...The challenge...is trying to identify its fundamental nature. What processes created it? Does it interact, decay? We are looking for new results that will provide a key.” —Brown physicist Rick Gaitskell, chair of the 2018 Identification of Dark Matter Conference, held at Brown in late July.