nucleobases

As anyone knows who has been given directions and told “you can’t miss it,” sounding easy and being easy can be entirely different things. Reporters sometimes make the most difficult step in evolution – the origin of life – look like a cinch through the use of suggestive metaphors, like the commonly-invoked phrase, “building blocks of life.” The directions in their articles usually lead to dead ends at worst, or, at best, baby steps on a long march, most of the route TBD, a TLA (three letter acronym) meaning “to be determined.”