Did you know that the core foundation of OSX is an open-source UNIX operating system called Darwin? MacDevCenter explains Darwin and How It Powers Mac OS X. Old-timers will no doubt claim that a lot of the strength of OS X is derived from its UNIX underpinnings and reading this article might very well convince you of the veracity of this idea.
In any case, especially for students, understanding the connection between UNIX and OS X is valuable to give historical context to what some people say is the best operating system in use today–by that I mean OS X!
