From Envirowiki

Nodes are basically meeting points of various issues, and serve as a way of organising things to make them easy to access.

nodes operate in a similar way to wikipedia's portals - as a starting point for a category, from which other pages are linked, and basic information is given. Nodes shouldn't really contain stand alone information, but link to it in article pages instead.

[edit] Node Creation

So far, nodes have just be created as they are needed or thought of. this is probably a good way to continue for now.