Why Does Pain Hurt? Scientists Find the Neurons That Cause Our Aches

A group of researchers have found the brain cells responsible for the emotional unpleasantness of pain -- well, they've at least found them in mice. But the results, published in Science, could help scientists develop new treatments for chronic pain if that same cluster of cells exits in humans. "While painful stimuli are detected by nerves," says Gregory Scherrer, one of the study's authors, in a press release, "this information doesn't mean anything emotionally until it reaches the b