Inspired by Ben-Jacob's observations of how bacteria can spontaneously order their motion during collective swarming, the groups of T. Vicsek and Ben-Jacob devised a simple model able to generate non-equilibrium states that violate the usual physics theorems for equilibrium states. This work has led to the creating of a new field of multi-agent swarming (swarming intelligence), proposed to explain a wide variety of phenomena ranging from collective navigation (swarming intelligence) of bacteria, amoeba and insects, to flocking of birds and schools of fish as well as to the design of autonomous vehicles capable of functional self-organization even in the absence of an overall omniscient controller. Using fratricide to fight bacteria: In 2000, Ben-Jacob's group discovered a fascinating phenomenon of competition between two sibling bacteria colonies of the P. dendritiformis when inoculated side by side. Recent studies of the phenomenon revealed that the two colonies not only inhibited each other from growing into the territory between them but induced the death of those cells close to the border. By employing molecular biology methods combined with the new genome sequencing information and bioinformatics, they discovered a new toxin (sibling lethal factor), which acts selectively only on the same bacterial strain.