The mission of Sustainable Harvest International (SHI) is to provide farming families in Central America with the training and tools to preserve our planet's tropical forests while overcoming poverty.

Agroforestry Net provides practitioner information and training in agroforestry, forestry, and sustainable resource management.

The Natural Resources Conservation Service is the Federal agency that works in partnership with the American people to conserve and sustain natural resources on private lands.

Since 1989, Trees for the Future has been helping communities around the world plant trees. Through seed distribution, agroforestry training, and our country programs, we have empowered rural groups to restore tree cover to their lands. Planting trees protects the environment and helps to preserve traditional livelihoods and cultures for generations.

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Food and Agriculture Organization of the United Nations: essential documents, statistics, maps and multimedia resources

The University of Nebraska-Lincoln, founded in 1869, is one of the nation's premier land-grant institutions. UNL is a member of the Association of American Universities and is classified by the Carnegie Foundation for the Advancement of Teaching as a Doctoral/Research University-Extensive.