Episode 5 --- The Trouble with Dark Matter.  This important hour-long interview with astronomer and dark matter expert Stacy McGaugh, Chair of the Dept. of Astronomy at Case Western Reserve University in Cleveland, Ohio, covers the conundrums surrounding the mystery of dark matter in the cosmos.  It’s a candid account of dark matter’s history, the prospects for detecting its makeup, and, most crucially, its failings as a cosmological theory and hypothesis.  Problem is, we’re stuck with it.