Euthenics is a noun that refers to the study of the effect of living conditions on humanity.

The Greek prefix E-U means ‘good,’ while ‘Thenein’ is Greek for ‘to make or do.’ Euthenics is a word that refers to the efforts to improve human conditions. Here’s an example of it in use:

Back when we were living in the desert, we could have really used some kind euthenics program. In fact, the best way to improve our lives would have been to give us an air conditioner.