If I were to ask you what’s more common in the U.S., homicide or suicide, what would you say?
Homicide is certainly a lot more prominent; it’s constantly in the headlines and in our public consciousness. But the fact is that suicide is more than twice as common as homicide. The preliminary numbers for 2009, the most recent year for which we have data, show there were roughly 36,500 suicides in the U.S. and roughly 16,500 homicides.

So why don’t we hear more about suicide? In part because it is a very different type of tragedy. Murder represents a fractured promise within our social contract, and it’s got an obvious villain. Suicide represents –- well, what does it represent? It’s hard to say. It carries such a strong taboo that most of us just don’t discuss it much. The result is that there are far more questions about suicide than answers. Like: do we do enough to prevent it? How do you prevent it? And the biggest question of all: why do people commit suicide?

Those are just a few of the questions we address in our latest Freakonomics Radio podcast, “The Suicide Paradox.” This is the third of five hour-long podcasts we’ll be releasing over the coming weeks. Some of you may have heard them on public-radio stations around the country, but now all the hours are being fed into our podcast stream. (You can download/subscribe at iTunes, get the RSS feed, listen live via the media player above, or read the transcript here.) I have to say, many of the answers we found were surprising. And the topic in toto, while obviously a difficult one, is fascinating.