Simulation of ethnic segregation

Here's an interesting article about a computer simulation that reproduces segregation. It shows how even relatively unprejudiced people can end up creating highly segregated neighborhoods. It also explores what it takes to prevent genocide in societies with ethnic hostlities.

I read this article about a year ago, and then recently I remembered it but couldn't find it. Now that I've found it again, I'm adding it here so that I don't lose it again.