Ever since the phrase “glass ceiling” was coined in 1978 to describe the unseen barriers to professional and social mobility of women and minorities, many have tried their hand at smashing it.Perhaps that’s because we failed to remember that glass, despite its fragility, is incredibly malleable and can stretch, bend, and buckle before it ever breaks. This tension is precisely what Urban Glass’s current exhibition, “Glass Ceiling: Art of Resilience and Fragility,” on view through January 13, 2018, takes up.