In the early 1990s Christian published a newsletter, Growing Community, about starting new communities. In 1993 she became editor of Communities magazine, a quarterly publication of the nonprofit Fellowship for Intentional Community (FIC), about intentional communities and organized neighborhoods in North America. Her first book on communities (see below) was published in 2003 and her second in 2007. In October 2007, she stepped down from her post at Communities Magazine to found the bimonthly Ecovillages newsletter, a project of Cooperative Resources & Services Project.

Previous writing experinece included writing articles for New Age magazine, Yoga Journal, and East West Journal. She has also hosted radio interview programs in Hawaii and in northern California in the 1970s and 80s.

At Earthaven Ecovillage, Christian works on the sustainable homesite she shares with her mother and other Earthaven residents. She participates in Earthaven's consensus governance process, and serves on its strategic planning and membership committees. Christian also gives day-long tours of Earthaven.

Christian is the author of two books designed to help people who want to join or start their own ecovillages or intentional communities. In Creating a Life Together: Practical Tools to Grow Ecovillages and Intentional Communities, she uses success stories, cautionary tales, and step-by-step advice to cover typical time-frames and costs; the role of founders; getting started as a group; vision documents; power, governance, and decision-making; legal structures; finding and financing land; zoning issues; sustainable site plans; selecting new members; and good process and communication skills for dealing well with conflict.

In Finding Community: How to Join an Ecovillage or Intentional Community, she covers researching, visiting, evaluating, and joining communities.

Christian speaks, leads workshops, and shows slidepresentations on ecovillages in the United States andCanada, including Ecovillage Training Center at The Farm in Tennessee, Los Angeles Eco-Village, Lost Valley Educational Center in Oregon, O.U.R. Ecovillagein British Columbia, and Easton Mountain Center in New York. She has led workshops at the North American Cohousing Conference, Twin Oaks Communities Conference, and FIC's Art of Community gathering. Her articles on ecovillages and intentional communities have appeared in publications ranging from Mother Earth News to Canada's This Magazine. She has been quoted in The New York Times, Harper's magazine, and AARP Magazine, and interviewed by Vision magazine, New Dimensions Radio, NPR, and the BBC.