Arboretum Cohousing is a 40-unit development in Madison, Wis. It includes affordable housing through Habitat for Humanity of Dane County.

The Richard Dawkins Foundation for Reason and Science supports “the scientific education, critical thinking and evidence-based understanding of the natural world in the quest to overcome religious fundamentalism, superstition, intolerance and human suffering.” The U.S. branch has headquarters in Washington, D.C., and is led by executive director R. Elisabeth Cornwell.

Delaware Street Commons, under construction in Lawrence, Kan., is the first cohousing project in the state. It is multigenerational, uses consensus decision-making and values community and sustainability.

Project Reason is a nonprofit foundation dedicated to promoting secular values and scientific knowledge. Sam Harris is co-founder and chairman. Contact through the website.

The Tuscaloosa Cooperative Association, in Tuscaloosa, Ala., is a new group exploring environmentally sustainable cohousing for the area. Charles Nuckolls, a professor of anthropology at the University of Alabama, says the group would like to create an American village.

Orange Twin Conservation Community is a developing eco-village that grows from a record label in Athens, Ga.

The LGBT Humanist Council is a project of the American Humanist Association. It provides support to LGBT humanists in coming out and serves as a forum for exchanging ideas.

Based in Chapel Hill, N.C., Second Journey promotes the values of mindfulness, service and community for the second half of life. Bolton Anthony chairs Second Journey.

Giles Blunden is a Carrboro, N.C., architect who does green building and cohousing. He designed the 46-home Pacifica Cohousing, incorporating environmental and community values, also in Carrboro.