The latest “WHO Bulletin” features an interview on the science of violence prevention. Twenty years after Rodrigo Guerrero-Velasco (mayor of Cali, Colombia from 1992-1994, and again from 2011 to the present) treated violence like a disease, using epidemiology to find the causes and then intervening to address them, his approach to violence prevention has been taken up across the Americas. Read more Science of Violence Prevention (WHO)