Kent Kiehl
Dr Kent Kiehl spends his days talking to people who have no compassion or empathy for others. They are those known as psychopaths. He studies their brains in an effort to understand the science of people who have no conscience.
He has the world's largest database of brain data on psychopaths. They don't come to him, he goes to them. He has an MRI machine parked on the grounds of a correctional facility in New Mexico in the Southwestern United States, working with the Mind Research Network and the University of New Mexico.
The images in this gallery are used with permission and are subject to copyright conditions.
