Do telepathy, clairvoyance and other “psi” abilities exist? The majority of the general population believes that they do, and yet fewer than one percent of mainstream academic institutions have any faculty known for their interest in these frequently reported experiences. Why is a topic of enduring and widespread interest met with such resounding silence in academia? The answer is not due to a lack of scientific evidence, or even to a lack of scientific interest, but rather involves a taboo. I will discuss the nature of this taboo, some of the empirical evidence and critical responses, and speculate on the implications.