Finches of Mars
(Book)

For many, Mars represents humankind's last hope. In six tightly clustered towers on the red planet's surface, the colonists who have escaped their dying home world are attempting to make a new life unencumbered by the corrupting influence of politics, art, and religion. Unable ever to return, these pioneers have chosen an unalterable path that winds through a landscape as terrible as it is beautiful, often forcing them to compromise their beliefs -- and sometimes their humanity -- in order to survive.