One Plus One Equals One

We are in the midst of a revolution. It is a scientific revolution built upon the tools of molecular biology, with which we probe and prod the living world in ways unimaginable a few decades ago. Need to track a bacterium at the root of a hospital outbreak? No problem: the offending germ''s complete genetic profile can be obtained in 24 hours. We insert human DNA into E. coli bacteria to produce o...