Japanese quake and predicted tsunami wave heights

This is a story about pizza, geometry, and making sure you get what you paid for.

Calculating how much money a kid gets after exchanging all twenty baby teeth.

One-third of households are rented and the other two-thirds are owned or in the process. However, the difference between renting and owning changes with age.

A look at the rise for each state over three decades, for men and women.