Environmental psychologists are the design mavens of the scientific world. We’re the folks who concentrate our attention on how sensory experiences, psychosocial factors such as needing a territory, and basic psychological drives like having control over our physical environment, interact with personality and national culture to influence how attitudes and actions are affected by being in one space or another. Several dozen of us, working around the world, are moving what scientists have learned about how humans experience space from the dark corners of academia into the light of design practice, where it can make people’s lives better.