Offers youth volunteers the opportunity to volunteer on a range of powerful, community initiated development projects in South and Central America, Asia and the Pacific.

Resource for finding voluntary work in nature conservation. Lists short and long term projects. Volunteers can work worldwide, with marine mammals or terrestrial fauna, in national parks or in wildlife rescue centers.

Prints a directory of over 1, 000 organic host farms; includes information on WWOOF programs, directory of agents, and bulletin board of opportunities.

Politically independent grassroots organization with a mission is to support peace, justice and sustainable economies in the Americas by changing US policies and corporate practices in Latin America and the Caribbean.

Volunteer expeditions that provide resources to help sustain livelihoods and alleviate poverty through the protection, restoration and management of coral reefs and tropical forests.

Nonprofit Educational Organization. Internships, Study Abroad, Travel-Study, field Study Academic credit - undergraduate or graduate level.

UK based not-for-profit organisation working to facilitating projects that enhance global coral reef conservation and research.

Specializes in marine and terrestrial scientific conservation expeditions for gap year students, university students and those wanting to undertake international voluntary work in Borneo, The Bahamas, Fiji and Zambia.

Offers international volunteers programs in Brazil. Focused on community development programs.

Medical relief agency providing international health care for third world relief. This Catholic charity sends medical donations including emergency medical supplies and pharmaceuticals for emergency aid.