27 years ago, a group of South Americans envisioned a society in which limited resources would form the base of a sustainable future. To bring their experiment to life, they chose a site in the sparsely populated and nearly arid plains of eastern Colombia. They called their village “Gaviotas” and from which they created a host of ingenious and relatively affordable technologies. A book on Gaviotas has just been published. Its author is Alan Weisman who produced a documentary on Gaviotas for National Public Radio a few years back. Mr. Weisman provides an update on Gaviotas later in the program, but first, here is his original report.