Nancy Kress 
Beggars in Spain [EPUB ebook] 

In a world where the slightest edge can mean the difference between success and failure, Leisha Camden is beautiful, extraordinarily intelligent … and one of an ever-growing number of human beings who have been genetically modified to never require sleep.Once considered interesting anomalies, now Leisha and the other "Sleepless" are outcasts — victims of blind hatred, political repression, and shocking mob violence meant to drive them from human society … and, ultimately, from Earth itself.But Leisha Camden has chosen to remain behind in a world that envies and fears her "gift" — a world marked for destruction in a devastating conspiracy of freedom … and revenge.