The Typhon Project

Radiation is decimating the human race.
When the Earth's magnet field fails, only the best and brightest young people are selected for genetic modifications that will save them. Leah is among the few chosen to survive. But losing her family and the physical changes caused by the modifications leave her devastated--she hates looking in the mirror at the creature she's become.
She's transported to The Farm to be with others of her kind, but when she sneaks from the compound one night, she meets a boy, a human boy, seemingly unaffected by the radiation, who reveals a wild conspiracy theory about the genetic modifications and the very nature of the magnet field failure. His theories could be tumor-induced paranoia.
Or he could be telling the a truth.