Unbeknownst to many people, our emotions, cognition, behavior, and mental health are influenced by a large number of entities that reside in our bodies while pursuing their own interests, which need not coincide with ours. Such selfish entities include microbes, viruses, foreign human cells, and imprinted genes regulated by viruslike elements. This article provides ..
In the world of Star Trek, a rule called the “prime directive” prohibits our heroes from interfering in the development of alien cultures. I don’t think they had in mind the kind of “cultures” that could be grown in a Petri dish, but, as it turns out, NASA has predicted that we will find extraterrestrial life within the next 20 years, and that the life in question w..