In the halls of Capitol Hill, a rancorous battle rages over how to deliver better healthcare to the public. But in the nation’s biotechnology labs—and in a few overseas—scientists and engineers are staging a quieter revolution in basic patient care. In recent years, interdisciplinary teams of nanoscientists, engineers and surgeons have revolutionized the way we treat some of our most basic injuries—cuts, scrapes and wounds. Their work has lead to wound dressings that dramatically speed clotting, prevent scar formation or encourage healing, as well as new interventions that don’t look anything like your childhood Band-Aids. In many cases, the new bandages look deceptively low-tech. Some of them are already in use, but the incredible new technologies may not even be visible to the patients who wear them.