Black Box Justice

Richard Berk designs computer algorithms that predict crime. As courts and cops increasingly use his and similar tools to shape everything from parole decisions to street policing, Berk has a warning: accuracy comes at the cost of fairness, and citizens must decide where justice lies.

Mapping the Human Journey

Combining old-school fieldwork and ethnography with up-to-the-minute gene-based analyses, Penn molecular anthropologist Theodore G. Schurr has helped shape our understanding of the movement of ancient peoples into the Americas.

Chasing Miracles

The author wanted to know why the stem-cell treatments that worked so well for her hobbled dog aren’t being used to put the spring back in humans’ steps. Researchers at Penn’s Institute for Regenerative Medicine explained—and shared some of their own, measured, progress toward successful therapies.