A profile of NFL commissioner Roger Goodell.

Meet Gene Locks, the onetime Princeton quarterback suing the NFL on behalf of 4,000 former players.

Just days after suffering a concussion, a 17-year-old fullback hangs himself. Inside his family’s journey to learn if a brain injury is to blame.

The story of former Vikings linebacker Fred McNeill and the lasting impact of his concussions.

The demise of an NFL player.