As a kindergarten teacher might say, sharing is caring. She might not mention that cooperation is also a great way to form a community, and thus improve everyone’s chances of survival. Humans aren’t the only ones to apply this strategy--marine bacteria also form cooperative populations, according to a study in the journal Science. [Otto X. Cordero et al, Ecological Populations of Bacteria Act as Socially Cohesive Units of Antibiotic Production and Resistance ]