Euthenics (/juːˈθɛnɪks/) is the study of improvement of human functioning and well-being by improvement of living conditions. "Improvement" is conducted by altering external factors such as education and the controllable environments, including environmentalism, education regarding employment, home economics, sanitation, and housing, as well as the prevention and removal of contagious disease and parasites. In a New York Times article of May 23, 1926, Rose Field notes of the description, "the simplest [is] efficient living". It is also described as a right to environment.