GreenTreks Network, Inc. - GreenTreks is a distinctive non-profit dedicated to educating people about the interconnectedness of environmental, societal, economic, and individual health. We communicate the power of the individual in creating meaningful change.

Pfeiffer Nature Center is a non-profit, tax exempt organization with the purpose of building a foundation of knowledge, understanding, and appreciation for the intrinsic value and aesthetic qualities of our natural world.

A non-profit association cooperating with Shenandoah National Park to provide information and educational material to park visitors.

Carbon County Environmental Education Center, on the west end of Mauch Chunk Lake Park, rehabilitates wild birds and animals and houses birds of prey that can not be released, using them for education in surrounding counties.

Earth Foundation empowers students and educators to work toward a sustainable economy, a just society and a healthy environment.

The Environmental Forum of Marin, in Marin County, California, is a nonprofit organization dedicated to preserving the quality of our environment through education.

Harmony Foundation is an environmental educational non-profit that creates innovative environmental and community training programs and educational materials for educators, youth.

Placer Land Trust - preserves open space and farmland in Placer County, California, in partnership with private land owners and other organizations. Since 1990, Placer Land Trust has conserved over 50 acres of land, including wild land on the North Fork of the American River, open space in a residential area,

Southwest Environmental Research & Education is a non-profit [501(c)(3)] orgainzation seeking to help solve environmental problems in the US Southwest via environmental eduction and research.

The Coalition is a non-profit network of environmental education centers, conservation and recreation organizations, schools, fish and wildlife agencies, and businesses to support outdoor education.