Editor's note: This column is part of 'Why Do We?' — a weekly video series hosted by culture expert Martin Lindstrom that untangles unique quirks of human behavior. Click here for the full series page ...

The star symbol on elevator buttons typically denotes special or priority floors, often for maintenance or emergency use. It helps users quickly recognize vital facilities such as service access ...

Dan Darkow, director of the Miller Center for Student Disability Services, credited with advocating for universal design ...