Difographs
A difograph is, essentially, a knowledge map that moves and has elements that can be updated asynchronously
An excellent pointer to resources is the

Difographs node on DebateGraph.

If you want a good collection of examples, however, watch Hans Rosling's  

Gapminder
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Knowledge Federation Domain Map »Knowledge Federation Domain Map
Processes »Processes
Difographs
Gapminder »Gapminder
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