The majority of women in prison have committed minor, non-violent crimes. But a large number have committed violent offences such as assault, homicide and robbery.
The European Court of Human Rights will consider whether Breivik's human rights have been violated by his solitary detention.
New psychoactive substances, same problematic users.
Reducing stubbornly high levels of violence can be achieved if there is a focus on ensuring that children are not exposed to violence or toxic stress at home.
But is the data misleading?
What was shown on Four Corners was cruel, inhuman and degrading treatment – if not torture.
Why reforms to treat prisoners as 'assets' rather than 'liabilities' is a step in the right direction.
In 2015, a person took their life in prison every four days.
President Obama wants to reopen access to Pell grants to prisoners. Studies show when men and women enroll in college programs, they are less likely to return to prison.