“CTE is linked to repetitive brain trauma and has a distinct pathology that can only be diagnosed at autopsy,” says Dr. Ross ...

Police have lined up four rows deep to pay respects to a fellow officer who was among the victims of a gunman's rampage at a Manhattan office tower.

A robotic dog was used to enter the Las Vegas home of the suspected New York gunman, who is accused of killing four people and himself in a shooting inside a Ma ...