5x5

mandelbrot: elegant, shuffled fractals of gears

imperative: the moral dilemmas of self-driving cars

gender neutral: as a concession to how people actually use the Queen’s English, the singular they is now admissible in print—according to some sources

festoonery: clever, cheerful hospital Christmas décor

skywalker ranch: the European Space Agency’s upcoming ExoMars mission will include a moisture-farming unit