title:Type codes
To help users understand how the world problems are distinguished in the Encyclopedia of World Problems and Human Potential, codes have been appended to the problem names on the index pages (and at the end of each profile). These codes correspond to the type sections into which the problem profiles have been tentatively clustered in the Encyclopedia. They are designed to distinguish the more general and fundamental problems from those which are more specific or detailed. More detailed comments on each type are given by following the hyperlinks: