An interview with the man who tried to stop the gunman in the Kansas bar shooting; America's most amazing nurse; a 365-day sex challenge; a common mistake couples should never make; omega-3 and fish-oil supplements; a shocking workout video.

Three people are exonerated after spending years in prison for crimes they did not commit; how mistakes happen in the justice system; how the trauma of a wrongful conviction affects the body.

A woman with six feet of excess skin; a man tormented by large keloids; a child born with an extra set of limbs; rapper Siya reveals her new smile; a mother covered in tiny tumors; Rosie Mercado; saving baby teeth; new medical guidelines.