Organizations to check out

AAA - American Anthropology Association
SfAA - Society for Applied Anthropology
Pennies For Peace
Roots and Shoots
Hungry For Change
Sustainable Chiapas
Orquideas Moxviquil (orchid and nature preserve)
Eat Well Guide (find organic/sustainable restaurants in your area)
Take Part
NOH8 Campaign
Natate
Volunteers For Peace
Bowers Museum
Survival International
Free Rice
The Grain Project
CASFA
Central Asia Institute (Greg Mortenson of "Three Cups of Tea")
Emerald Energy and the Megaflora tree

more to come....

If there are organizations you recommend supporting please leave a comment.