(3/5 stars) The Final Six is probably a better book than my star rating indicates. I just didn't love it because it felt like a lot of build-up with little pay-off. But I think that's because I'm far less interested in the interpersonal relationships of young people than I am in space travel and the associated mysteries. It's a YA book, mind you. So, it feels a little wrong to evaluate it by standards that aren't quite right for YA, but whatevs.
The basic premise of the book is that earth has been devastated by climate change and is becoming uninhabitable. So, the various countries and space agencies around the world have teamed up to send a team of teenagers to Europa where they will begin terraforming the moon for human habitation. The reason they pick teenagers is because they're old enough to learn complicated things, but young enough to remain adaptable to all the things that the mission requires. But there's more to the mission that the teens are being told. DUN DUN DUUUUUUUUUUNNNNN!
An interesting, if far-fetched premise, with characters that I liked pretty well. The conflicts don't build up high enough for my tastes and don't pay off in the way I wanted. But it's good enough that I will probably pick up the next book at some point in hopes of getting more of that space travel goodness.