New Harmony was a co-operative community established in Southern Arizona. It was inspired by the teaching of the Traveler, Matthew Corrigan. Corrigan meet Arthur Greenwald, a Texas businessman, when Greenwald's car broke down on a Houston freeway. For two months, the Traveler spoke to a group of people that met at the Greenwald home. When the Corrigan left Houston, a core group of four families decided to sell their homes, buy eight hundred acres of property in the high desert near San Lucas  Arizona, and start a new life.

New Harmony was named after the nineteenth century utopian community started in 1826 in Indiana, USA by the Welsh social reformer, Robert Owen. From the start, Greenwald and his friends decided not to farm the arid land or raise cattle, but to develop a Third Way that combined "low tech" (straw bale houses) and high tech (a wind turbine that powered computers). Most of the income that sustained New Harmony came from contracts with various companies that used the Internet. The average adult at New Harmony worked a five to six hour day, five days a week and spent the rest of the time raising their children and enjoying various recreational and artistic activities.

With no warning of trouble, the New Harmony settlers killed each other during one-night of violence in 2007. Apparently the survivors set fire to the buildings and then committed suicide. No one was found alive.