Can a brain scan uncover your morals?
It’s hard to imagine Steven Northington killing two people. The 43-year-old says he likes to make people laugh, “like a comedian”. He’s a loyal son to his troubled mother and father. He sends his younger sister birthday cards from prison and draws elaborate smiley faces on them. His defense team laughs with affection when they hear his name because he is, they say, “a character”. Between 2003 and 2004, Northington was slinging for a drug ring that flooded his...