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Photographs are recorded every 3 hours and 20 minutes, from top left to bottom right, to show the growth sequence of a percolating network (red) of disconnected fragments (black) of a slime mold on agar. Selected for an Editors' Suggestion. [Adrian Fessel, Christina Oettmeier, Erik Bernitt, Nils C. Gauthier, and Hans-Günther Döbereiner, Phys. Rev. Lett. 109, 078103 (2012)] |


