Over the last three decades Marta Llanes, a 62-year-old Havana zoo biologist, has raised 36 baby chimpanzees in her 5th floor apartment. Photographer Enrique de la Osa spent the last year observing the development of two chimps in her care since birth, Anumá and Ada. Llanes says she'll miss them when they return to the city's zoo next month, and worries about their future. Hand raised chimps have difficulty socializing with their own kind. Read the complete story.