Microbiologists have discovered that E. coli, a common gut bacterium, can launch a coordinated, preemptive assault against other bacteria it deems to be a threat. This collective behavior protects them from competitors, mirroring the evolution of alarm calling among social animals.

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Microbiologists have discovered that E. coli, a common gut bacterium, can launch a coordinated, preemptive assault against other bacteria it deems to be a threat. This collective behavior protects them from competitors, mirroring the evolution of alarm calling among social animals.