Jeffrey Rosen

Legal expert Jeffrey Rosen says of the Supreme Court nominee: "If he thought that individual liberty was threatened by presidential or congressional overreaching, then he would step in."

Technologies like GPS and social media are posing new challenges to interpreting the Constitution's guarantees of privacy and free speech. Law professor and journalist Jeffrey Rosen says we're now in an era the Founding Fathers could never have imagined, in which private companies are determining the rules for what can be shared.

Journalist Jeffrey Rosen is a frequent contributor to The New York Times Magazine. His article titled "The Brain on the Stand: How neuroscience is transforming the legal system" appeared in the March 11 issue.

It's about an emerging field of study called "neurolaw," which combines neuroscience and the law. He writes about how evidence from brain-scanning technologies are being used in the courtroom to explain away criminal behavior.