Natalie Lynch at a relative's home with her youngest child, Maycen. In 2014, when Lynch was pregnant with her older child, she spent two weeks before giving birth ina prison cell, mostly alone.
Dr. Homer Venters, the former head of New York City's correctional health services, says that inmates held in solitary confinement cells, such as the Rikers Island cell shown above, have a higher risk of committing self-harm.
Middlesex County Correctional Facility Assistant Deputy Superintendent Scott Chaput with inmates in the prison's P.A.C.T (People Achieving Change Together) unit in Billerica, Mass.
Two men sit inside the chapel at Halden prison in far southeast Norway in this picture taken in 2010. Prisoners here spend 12 hours a day in their cells, compared to many U.S. prisons where inmates spend all but one hour in their cell.