by Merry Youle — Is there such a thing as an oblig­a­to­rily mul­ti­cel­lu­lar prokary­ote? We pre­sented a case for their ex­is­tence be­fore, one that fu­eled our evo­lu­tion­ary imag­i­na­tions. Un­like the myxobac­te­ria, for ex­am­ple, which have...