sciencehabit writes "Thanks to an anlaysis of fecal samples from four sets of Missouri-born female identical twins and their mothers, researchers have concluded that human guts harbor viruses as unique as the people they inhabit; the viral lineup differs even between identical twins. Even more surprising? These viruses may be doing good work inside of us."
I have yet to see any problem, however complicated, which, when
you looked at it in the right way, did not become still more complicated.
-- Poul Anderson