At first, it looks like a pile of garbage, but shine a light on it, and you’re likely to gasp in surprise. Sculptors Tim Noble and Sue Webster assemble cast-off materials like scrap metal and wood into sculptures that take on new life when hit the right way with a beam of light. A pile of nondescript garbage, or a series of elongated metal scraps, turns into a detailed portrait in silhouette. Check out their sculptures, and you’ll never look at garbage the same way.