Thought Police

Researchers claim fMRI can probe the workings of the brain as never before — revealing everything from when you tell a lie (read: interrogations) to how you fall in love (read: divorce court)—while critics counter that reports of digital mind readers are premature, and we should think twice before using fMRI in our public and private lives.

(Click here to listen to a leading researcher predict the end of interrogations on The Popular Mechanics Show!)