A labyrinth of locks and twisty hallways leads us to the clean rooms at Science 1. Through the looking glass, materials science graduate student Yingqi Qiang and lab manager Mustafa Yavuz wire devices on a semiconductor chip with a 25-micron gold line. Yavuz (left) explains that the complex circuitry of semiconductor devices requires clean rooms to prevent contamination with even the smallest particle of dust. They also create biosensors for brain-related diseases here. Across campus, anthropologists use clean rooms to collect DNA from human bones.