It is interesting perhaps to note that machine computing, information theory and the structure of DNA all came about around the same time. Rather than focusing on "artificial intelligence" per se, some people have begun to investigate "natural computing". Here's a few links along those lines:

>From this viewpoint, a key question is whether the definitions and concepts surrounding computation (that we have from mathematics and logic,) can be adapted to faithfully describe natural computational processes. And in fact, can "natural computation" be defined in a crisp way?