The Enterprise encounters a science-related problem and solves it using science. While there is perhaps a bit too much technobabble the episode works for the most part. It's nice to learn that Pulaski isn't just a female Bones. And it's nice to know that the Federation engages in incredibly dubious human experimentation and no one thinks that's odd. Secretly, Star Trek has been a dystopia all along.
Review of Unnatural Selection
