Finding parasitic behavior
Two adjacent stories, both by Tina Hesman Saey, at first glance may appear to be unrelated but in actuality show examples of a well-known phenomenon: parasites adversely affecting the behavior of the host so that the parasite can get to its next victim.

The article “Belly bacteria can boss the brain” (SN: 10/8/11, p. 9) is an example of such behavior.