The Million

I thought that this was an interesting premise and it makes for a pretty good mystery/adventure - but I was hard-pressed to find anyone except the main character to care about, because pretty much everyone from both sides is less-than-admirable, and I'm pretty sure that the author's goal was not to have me hoping that the entire lot of them would become extinct.

I did really enjoy the worldbuilding-as-thought-experiment of how to preserve the Earth's resources with a small group of custodians, without engaging in mass homicide of the populace.