"Centuries ago, minotaurs were derived from beast-headed giants by the priests of a cult that sought to harness elemental power to use against the sorceror-kings.  The cult was stamped out, but the savage warriors they created survived and eventually spread across Athas.  Today, minotaurs are a race of feral, violent reavers that lurk in the badlands and barrens.  On occasion, less brutal members of the race seek employment or adventure in the Seven Cities."<br/><br/>The two new races are Muls and Thri-Kreen, (both of which are<em>awesome</em>,) and of the standard PHB races, Dragonborn fit in as the Dray, Dwarves and Elves are at their usual Dark Sun portrayal, (that is, the dwarves are bald and the elves are like Fremen from Dune,) Eladrin have been worked in as a group of fey creatures whose lands are slowly vanishing from the material plane as it is defiled further and further, Goliaths fit in as Half-Giants, Half-Elves are still hated by everyone, Halflings are still their usual cannibalistic selves, Humans are still Humans, Tieflings are a people whose ancestors made a bargain with some dark power to gain the ability to survive in the desert world, (racial fire resistance and all,) and then there are three other races listed with simple, short blurbs about fitting them in: Genasi, Kalashtar, and Minotaurs.  These are apparently races that don't have much of an effect on the world at large.<br/><br/>There's also a sidebar listing possible ways to introduce other races, should the DM want to allow it.  Some of them actually seem like they could be pretty fun, at that.