"Euthenics, the science of controllable environment: A plea for better living conditions as a first step toward higher human efficiency" by Ellen H. Richards offers a compelling call for improving living conditions as a means to enhance human well-being and productivity. Richards explores the principles of euthenics, the science of creating favorable environments, and emphasizes the profound impact that living conditions have on individual and societal progress. This persuasive work advocates for the recognition and application of scientific principles to create healthier and more productive living environments, highlighting the significance of environmental factors in fostering human flourishing.