You probably have heard of Dark Matter, that unknown substance that makes up most of the universe? But what if Dark Matter isn’t real? Or what if it’s based on wrong physics? On March 13, 2017 McGaugh joined the Science Cafe Edition of The Sound of Ideas explaining why understanding Dark Matter matters. McGaugh also presented that evening at Music Box Super Club as part of Science Cafe about Dark Matter or Modified Gravity? What the Acceleration Scale in Galaxies Suggests. To see the NPR talk visit here.