From Below to Above — K.N. Kellum

Well, we did it.  After a century of misuse and abuse, the earth had enough and is no longer inhabitable.  In a desperate attempt for survival, the human race's only hope is to go underground.  Survival is the name of the game, and her name is Style. Style is an unlikely hero, strong, beautiful and no-frills - come as you are.  She is forced to return to the surface.  Once on the surface, she not only has to survive a scorched earth, but she has to fight off an invading alien race looking to rob the earth of its natural resources.  She finds an unlikely ally ---- strap in and let the adventure begin!