High-tech solutions to the world's biggest health challenges typically share one critical impediment to mass adoption: cost. Medical innovation is expensive, which means lower-income individuals and poorer countries often can't afford to access it. Enter Saad Bhamla and his team of researchers at Georgia Institute of Technology's Bhamla Lab, all champions of "frugal science"—where the focus is on using simple concepts to develop low-cost technology that improves global health.