Over at the New York Times, science writer Ferris Jabr wrestles with the difficulty of differentiating living things from non-living things—viruses can reproduce themselves and evolve, but need host cells to do it; inorganic crystals can grow and (sort of) reproduce. He concludes that although “life” as we know it is a useful concept, it’s just that—a concept: “We find it useful to think of some things as alive and others as inanimate, but this division exists only in our heads.”
From there, Jabr goes on to a conclusion that (judging from my Twitter stream) has made a lot of people very angry and been widely regarded as a bad idea:
