Courtesy eigenFACTOR Eigenfactor is a search engine for scientific journals. They have an interesting interactive way to browse through the various branches of science based on citations in these journals.
Courtesy eigenFACTORThey've taken some of the richest connections between the different disciplines and produced a static map that shows these connections weighted by citation. It shows some interesting flows of information between, Medicine, Cell Biology, Ecology, and Crop Science for example. Now I just need to figure out what "Control Theory" is.