Locals call Hollins Market ‘The Gem of Baltimore,’ and while the lines of customers used to wind around the block, more than half the stalls are now empty.  Hollins Market vendors talk about the past and present of Baltimore’s oldest city market. Plus, a hip hop artist remembers working in a horse stable, an astrophysics major survives a natural disaster, and a muralist explores the metaphor of a butterfly’s metamorphosis.