Beginning in Philadelphia in the late 1700s, the U.S. prison system has evolved over the centuries to become the largest in the world.

Lieutenant Thomas Conrad was standing in a control room in Nashville’s new central jail when he noticed something off with one of the key rings hanging on the wall. It was midday on December 30, 2019, ...

A new study led by researchers at Brown University School of Public Health found that more than half of U.S. jails are located at least a 30-minute drive from the nearest opioid treatment program—a ...