by Da­vide Ci­c­carese — Bac­te­r­ial com­mu­ni­ties live in a small world where cells fill any avail­able mi­cron. De­pend­ing on their lo­ca­tion and sur­round­ing en­vi­ron­ment, they can read­ily re­spond to changes by gear­ing up their gene reper­toire to in­sure their po­si­tion in a densely packed biofilm. To be able to vi­su­al­ize this...