A hardcopy book (readable online) about plant and animal production in the tropics.

Works to develop more effective and equitable forms of agriculture and natural resource management.

Courses, internship programs and practicums are offered at Hedgerow Farm, seven miles east of Boulder, Colorado.

Based at UC Davis, LTRAS is a long-term comparison of 10 conventional, organic and alternative cropping systems, both irrigated and nonirrigated.

The center's objectives are to reduce negative impacts of agriculture on natural resources and rural communities, to develop profitable farming systems that conserve natural resources, and to inform the public of new research findings.

Information on the making and use of seed balls in natural farming, plus other essays on biodiversity, sustainable agriculture, and other environmental issues.

Australian newsletter for social and bioeconomic research on sustainability and economics in agriculture. Contents of past issues, and online articles.

Offers consulting services and literature in sustainable agriculture. Page includes information about the director and a few online articles.

A coalition dedicated to promoting an ecologically sustainable and socially just food system. Describes group news, events and projects, and related headlines.

Aims to develop an agricultural system with the ecological stability of natural grasslands, as well as a high grain yield.