Freakonomics

An explanatory note

Introduction: the hidden side of everything

What do schoolteachers and sumo wrestlers have in common?

How is the Ku Klux Klan like a group of real-estate agents?

Why do drug dealers still live with their moms?

Where have all the criminals gone?

What makes a perfect parent?

Perfect parenting, Part II; or : would a Roshanda by any other name smell as sweet?

Epilogue : two paths to Harvard.