Jeremy Richman’s 6-year-old daughter, Avielle, was killed in the Sandy Hook Elementary School shooting in Newtown, Conn., in 2012. After her death, he worked to support neuroscience research on harmful behavior.

Jeremy Richman’s 6-year-old daughter, Avielle, was killed in the Sandy Hook Elementary School shooting in Newtown, Conn., in 2012. After her death, he worked to support neuroscience research on harmful behavior.