Innovative audio and acoustics research projects are opening the door to new applications, in fields ranging from structure analysis to pharmaceutical production to medical analytics, which seemed improbable only a few years ago. At Brigham Young University (BYU) in Provo, Utah, engineers are listening to highway bridges during rain showers in a quest to detect hidden structural flaws. Meanwhile, researchers at the U.S. Department of Energy’s Argonne, National Laboratory in Lemont, Illinois, are using sound waves to levitate individual pharmaceutical solution droplets.