"Back to the land" usually refers to a movement during the 1960's-1970's when thousands of people (largely young and middle to upper class) left cities and suburbs to begin rural settlements. Individual motivations varied, but often cited reasons included: dissatisfaction with conventional employment and lifestyles, concern about the depletion of fossil fuels, and interest in environmentalism. But as time progressed, many people left their homesteads and communes, and the movement dissipated. However, the movement produced its successes as well as its failures. Institutions such as the Farm in Tennessee and permaculture are the lasting legacy of the back-to-the-land movement. As new environmental challenges confront the world, some perceive the rise of new back-to-the-landers.