The Group on Earth Observations (GEO)
Information on the Group on Earth Observations (GEO) is available at http://www.earthobservations.org.
The Global Earth Observation System of Systems (GEOSS)
Information about GEOSS is available here ...
The Socio-Economic and Environmental Information Needs Knowledge Base (SEE-IN KB) has evolved out of the User Requirements Registry. The SEE-IN KB is available at seeinkb.net.