Warp Five is a Trek.fm podcast dedicated entirely to Star Trek: Enterprise. For the 20th anniversary of the series, hosts C Bryan Jones and Matthew Rushing are taking you back through all of Enterprise, one episode at a time.
http://warpfive.libsyn.com/webpage
episode 22: The Irish Species Are Still Earthlings
Xindi Evolution.
The third season of Enterprise brought us not only the first true season-long arc in Star Trek history but also one of the most unique races we had ever seen—the Xindi. Unlike most alien worlds encountered by Starfleet crews, the planet Xindus gave birth to six different sentient races. It raised many scientific questions, but also gave the writers a virtual toy box from which to pull the pieces of their story. In this episode of Warp Five Christopher Jones and Colin Higgins discuss the six different races—or species—that called Xindus home, the probability that such a world could actually exist, parallels with Earth’s own evolution, what the concept brought to Star Trek and Enterprise, and how the Xindi—rather than being the enemy—can actually be read as a representation of ourselves.