James Fallon studies the brain. Then he studied his own, and found out that he has the same brain malfunctions as psychopathic serial killers. What happened next is a fascinating story about the brain, the mind, and the dueling influences of nature and nurture.
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.