By nature of the medium, street art is temporary. Whether it's tagged, painted over, or eroded by the elements, it's the kind of creative expression that isn't designed to stand the test of time. Neither was a downtown Phoenix mural Keith Haring painted with local high schoolers back in 1986. The pop artist's kokopelli-adjacent "urban hieroglyphics" still pull heavyweight status in the zeitgeist, gracing Urban Outfitters accessories and becoming a Google Doodle. But that mural he painted on a since-demolished building at Central Avenue and Adams Street? After years of sun exposure, it was dismantled and apparently hauled off to the dump — save for one panel that was reportedly spotted at a nearby cafe before it disappeared. What happened to the rest? Who knows?