Wither (The Chemical Garden, #1) by Lauren DeStefano
By age sixteen, Rhine Ellery has four years left to live. She can thank modern science for this genetic time bomb. A botched effort to create a perfect race has left all males with a lifespan of 25 years, and females with a lifespan of 20 years. Geneticists are seeking a miracle antidote to restore the human race, desperate orphans crowd the population, crime and poverty...
