Christopher Ryan Ph.D.

People are in disbelief about Joe Paterno. This disbelief ignores the fact that human beings are adept at ignoring evil.

Sex is legal, and selling stuff is legal, so how can it be illegal to sell sex?

If I'm right about the near-future of war, our current drift will accelerate and take us right over the falls into a whole new world any day now.

The Pirahã have no words for "I'm sorry." They can say, "I was bad," or some such, but do so rarely. The way to express penitence is not by words but by actions.

My recent appearance on The Point, discussing current events (including slut shaming in politics).

We've known for some time that bonobos (previously known as "pygmy chimpanzees") are among the most sexual of all living animals—besides, of course, humans.

Both "Dexter," the program, and Dexter, the character challenge us to join the journey along the line separating the execution of moral justice from the depiction of killing.

The New York Times asked us to chime in on the "open marriage" discussion provoked by Newt's ex.

Santorum is on to something when he says that sex “keeps civilization going.” But he’s wrong to credit only heterosexual reproductive sex.

Is Santa a reflection of psychedelic shamanism?