Student adventures abroad
Tiffanie Rainville who writes about her adventures abroad ("A student abroad," November, 2008 Rural Delivery) worked through the following NGOs while seeking intern positions in Florida, Costa Rica, Halifax, and Ecuador.

Florida- Student Conservation Association
http://www.thesca.org/

Costa Rica (Coastal Rainforest and Wildlife) : Global Vision International
http://www.gvi.co.uk/expeditions/central-america/costa-rica/coastal-rainforest-expedtion-costa-rica/home
Rebecca Chavierri is the country coordinator.

Ecuador and Halifax - CIDA-funded International Youth Internship Program.
http://www.acdi-cida.gc.ca/CIDAWEB/acdicida.nsf/En/JUD-121483217-HVQ

Through the Atlantic Council for International Cooperation (http://www.acic-caci.org) who placed me with FURARE and the Ecology Action Centre (www.ecologyaction.ca)