See also hostels hotels maps outdoor activity places retreats tourism volunteer matching
Organizations:
Aspect Foundation (San Francisco)
Bay Area Green Tours
Child Family Health International (El Cerrito)
Desert Survivors
Ethical Traveler (Berkeley)
Face The World Foundation (Petaluma)
Global Exchange (San Francisco)
International Bicycle Fund
Interreligious Foundation for Community Organization
Middle East Children's Alliance (Berkeley)
No Fly Climate Sci
our developing world (Saratoga)
Peace Brigades International
Solidarity Collective
World-Wide Opportunities on Organic Farms - USA