The Healthcare Openness and Access Project (HOAP) is a collection of state-by-state comparative data on the flexibility and discretion that US patients and providers have in seeking and delivering healthcare. HOAP combines these data to produce 41 indicators of openness and accessibility. In...

For most of its history, commercial aviation has tended toward large airplanes, large airports, and rigidly scheduled flights. Now, however, two phenomena—technological innovation and long-term societal changes accelerated by the COVID-19 pandemic—are creating an environment in which many...